update v0.9.1-beta1 for anylink

2022-11-10 15:53:48 +08:00 · 2022-11-10 15:53:48 +08:00 · b85a05fcd2
parent a2e0c2dc78
commit b85a05fcd2
448 changed files with 2877 additions and 17395 deletions
--- a/anylink/.github/workflows/codeql-analysis.yml
+++ b/anylink/.github/workflows/codeql-analysis.yml
@ -1,71 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ dev ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ dev ]
-  schedule:
-    - cron: '32 12 * * 5'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go', 'javascript' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
-        # Learn more:
-        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
--- a/anylink/.github/workflows/go.yml
+++ b/anylink/.github/workflows/go.yml
@ -1,46 +0,0 @@
-name: Go
-
-on:
-  push:
-    branches: [ "main", "dev" ]
-  pull_request:
-    branches: [ "main", "dev" ]
-
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-
-      - name: Set up Go 1.x
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.16
-        id: go
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-
-      - name: Get dependencies
-        run: |
-          cd server
-          go get -v -t -d ./...
-
-      - name: Build
-        run: |
-          cd server
-          mkdir ui
-          touch ui/index.html
-          go build -v -o anylink -ldflags "-X main.CommitId=`git rev-parse HEAD`"
-          ./anylink tool -v
-
-      - name: Test coverage
-        run: |
-          cd server
-          go test -race -coverprofile=coverage.txt -covermode=atomic -v ./...
-
-      - name: Upload coverage to Codecov
-        run: |
-          cd server
-          bash <(curl -s https://codecov.io/bash)
--- a/anylink/Dockerfile
+++ b/anylink/Dockerfile
@ -1,6 +1,6 @@
 # web
-FROM node:lts-alpine as builder_node
-ENV VERSION 0.8.1
+FROM node:16.17.1-alpine3.15 as builder_node
+ENV VERSION 0.9.1
 WORKDIR /web
 COPY ./web /web
 RUN yarn install \
@ -8,7 +8,7 @@ RUN yarn install \
    && ls /web/ui

 # server
-FROM golang:1.17-alpine as builder_golang
+FROM golang:1.18-alpine as builder_golang
 #TODO 本地打包时使用镜像
 ENV GOPROXY=https://goproxy.io
 ENV GOOS=linux
@ -46,5 +46,4 @@ RUN apk add --no-cache bash iptables \
 EXPOSE 443 8800

 #CMD ["/app/anylink"]
-ENTRYPOINT ["/app/docker_entrypoint.sh"]
-
+ENTRYPOINT ["/app/docker_entrypoint.sh"]
--- a/anylink/README.md
+++ b/anylink/README.md
@ -8,6 +8,7 @@ Docker [stilleshan/anylink](https://hub.docker.com/r/stilleshan/anylink)
 基于 [bjdgyc/anylink](https://github.com/bjdgyc/anylink) 项目的 docker 镜像.

 ## 更新
+- **2022-11-10** 更新`0.9.1-beta1`版 docker 镜像.
 - **2022-07-04** 更新`0.8.1`版 docker 镜像.
 - **2022-04-07** 更新`0.7.4`版 docker 镜像.
 - **2022-02-16** 更新`0.7.3`版 docker 镜像.
--- a/anylink/build.sh
+++ b/anylink/build.sh
@ -1,4 +1,4 @@
-#!/bin/env bash
+#!/bin/bash

 set -x
 function RETVAL() {
--- a/anylink/build_docker.sh
+++ b/anylink/build_docker.sh
@ -1,4 +1,4 @@
-#!/bin/env bash
+#!/bin/bash

 ver=`cat server/base/app_ver.go | grep APP_VER | awk '{print $3}' | sed 's/"//g'`
 echo $ver
--- a/anylink/doc/README.md
+++ b/anylink/doc/README.md
@ -10,17 +10,22 @@

 > 感谢以下同学的打赏，AnyLink 有你更美好！

-| 昵称 | 主页                         |
-| -- | ---------------------------- |
-| 代码oo8 |                           |
-| 甘磊 | https://github.com/ganlei333 |
-| Oo@ | https://github.com/chooop    |
-| 虚极静笃 |                           |
-| 请喝可乐 |                           |
-| 加油加油 |                           |
-| 李建 |                              |
-| lanbin |                            |
-| 乐在东途 |                           |
+| 昵称           | 主页                         |
+| -------------- | ---------------------------- |
+| 代码 oo8       |                              |
+| 甘磊           | https://github.com/ganlei333 |
+| Oo@            | https://github.com/chooop    |
+| 虚极静笃       |                              |
+| 请喝可乐       |                              |
+| 加油加油       |                              |
+| 李建           |                              |
+| lanbin         |                              |
+| 乐在东途       |                              |
+| 孤鸿           |                              |
+| 刘国华         |                              |
+| 改名好无聊     |                              |
+| 全能互联网专家 |                              |
+



--- a/anylink/dtls-2.0.9/.editorconfig
+++ b/anylink/dtls-2.0.9/.editorconfig
@ -1,21 +0,0 @@
-# http://editorconfig.org/
-
-root = true
-
-[*]
-charset = utf-8
-insert_final_newline = true
-trim_trailing_whitespace = true
-end_of_line = lf
-
-[*.go]
-indent_style = tab
-indent_size = 4
-
-[{*.yml,*.yaml}]
-indent_style = space
-indent_size = 2
-
-# Makefiles always use tabs for indentation
-[Makefile]
-indent_style = tab
--- a/anylink/dtls-2.0.9/.github/assert-contributors.sh
+++ b/anylink/dtls-2.0.9/.github/assert-contributors.sh
@ -1,61 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-set -e
-
-SCRIPT_PATH=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
-
-if [ -f ${SCRIPT_PATH}/.ci.conf ]
-then
-  . ${SCRIPT_PATH}/.ci.conf
-fi
-
-#
-# DO NOT EDIT THIS
-#
-EXCLUDED_CONTRIBUTORS+=('John R. Bradley' 'renovate[bot]' 'Renovate Bot' 'Pion Bot')
-# If you want to exclude a name from all repositories, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-# If you want to exclude a name only from this repository,
-# add EXCLUDED_CONTRIBUTORS=('name') to .github/.ci.conf
-
-MISSING_CONTRIBUTORS=()
-
-shouldBeIncluded () {
-	for i in "${EXCLUDED_CONTRIBUTORS[@]}"
-	do
-		if [ "$i" == "$1" ] ; then
-			return 1
-		fi
-	done
-	return 0
-}
-
-
-IFS=$'\n' #Only split on newline
-for contributor in $(git log --format='%aN' | sort -u)
-do
-	if shouldBeIncluded $contributor; then
-		if ! grep -q "$contributor" "$SCRIPT_PATH/../README.md"; then
-			MISSING_CONTRIBUTORS+=("$contributor")
-		fi
-	fi
-done
-unset IFS
-
-if [ ${#MISSING_CONTRIBUTORS[@]} -ne 0 ]; then
-    echo "Please add the following contributors to the README"
-    for i in "${MISSING_CONTRIBUTORS[@]}"
-    do
-	    echo "$i"
-    done
-    exit 1
-fi
--- a/anylink/dtls-2.0.9/.github/hooks/commit-msg.sh
+++ b/anylink/dtls-2.0.9/.github/hooks/commit-msg.sh
@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# DO NOT EDIT THIS FILE DIRECTLY
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-
-set -e
-
-.github/lint-commit-message.sh $1
--- a/anylink/dtls-2.0.9/.github/hooks/pre-commit.sh
+++ b/anylink/dtls-2.0.9/.github/hooks/pre-commit.sh
@ -1,12 +0,0 @@
-#!/bin/sh
-
-#
-# DO NOT EDIT THIS FILE DIRECTLY
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-
-# Redirect output to stderr.
-exec 1>&2
-
-.github/lint-disallowed-functions-in-library.sh
--- a/anylink/dtls-2.0.9/.github/hooks/pre-push.sh
+++ b/anylink/dtls-2.0.9/.github/hooks/pre-push.sh
@ -1,13 +0,0 @@
-#!/bin/sh
-
-#
-# DO NOT EDIT THIS FILE DIRECTLY
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-
-set -e
-
-.github/assert-contributors.sh
-
-exit 0
--- a/anylink/dtls-2.0.9/.github/install-hooks.sh
+++ b/anylink/dtls-2.0.9/.github/install-hooks.sh
@ -1,16 +0,0 @@
-#!/bin/bash
-
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-SCRIPT_PATH=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
-
-cp "$SCRIPT_PATH/hooks/commit-msg.sh" "$SCRIPT_PATH/../.git/hooks/commit-msg"
-cp "$SCRIPT_PATH/hooks/pre-commit.sh" "$SCRIPT_PATH/../.git/hooks/pre-commit"
-cp "$SCRIPT_PATH/hooks/pre-push.sh" "$SCRIPT_PATH/../.git/hooks/pre-push"
--- a/anylink/dtls-2.0.9/.github/lint-commit-message.sh
+++ b/anylink/dtls-2.0.9/.github/lint-commit-message.sh
@ -1,64 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-set -e
-
-display_commit_message_error() {
-cat << EndOfMessage
-$1
-
-------------------------------------------------
-The preceding commit message is invalid
-it failed '$2' of the following checks
-
-* Separate subject from body with a blank line
-* Limit the subject line to 50 characters
-* Capitalize the subject line
-* Do not end the subject line with a period
-* Wrap the body at 72 characters
-EndOfMessage
-
-     exit 1
-}
-
-lint_commit_message() {
-    if [[ "$(echo "$1" | awk 'NR == 2 {print $1;}' | wc -c)" -ne 1 ]]; then
-        display_commit_message_error "$1" 'Separate subject from body with a blank line'
-    fi
-
-    if [[ "$(echo "$1" | head -n1 | awk '{print length}')" -gt 50 ]]; then
-        display_commit_message_error "$1" 'Limit the subject line to 50 characters'
-    fi
-
-    if [[ ! $1 =~ ^[A-Z] ]]; then
-        display_commit_message_error "$1" 'Capitalize the subject line'
-    fi
-
-    if [[ "$(echo "$1" | awk 'NR == 1 {print substr($0,length($0),1)}')" == "." ]]; then
-        display_commit_message_error "$1" 'Do not end the subject line with a period'
-    fi
-
-    if [[ "$(echo "$1" | awk '{print length}' | sort -nr | head -1)" -gt 72 ]]; then
-        display_commit_message_error "$1" 'Wrap the body at 72 characters'
-    fi
-}
-
-if [ "$#" -eq 1 ]; then
-   if [ ! -f "$1" ]; then
-       echo "$0 was passed one argument, but was not a valid file"
-       exit 1
-   fi
-   lint_commit_message "$(sed -n '/# Please enter the commit message for your changes. Lines starting/q;p' "$1")"
-else
-    for commit in $(git rev-list --no-merges origin/master..); do
-      lint_commit_message "$(git log --format="%B" -n 1 $commit)"
-    done
-fi
--- a/anylink/dtls-2.0.9/.github/lint-disallowed-functions-in-library.sh
+++ b/anylink/dtls-2.0.9/.github/lint-disallowed-functions-in-library.sh
@ -1,48 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-set -e
-
-# Disallow usages of functions that cause the program to exit in the library code
-SCRIPT_PATH=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
-if [ -f ${SCRIPT_PATH}/.ci.conf ]
-then
-  . ${SCRIPT_PATH}/.ci.conf
-fi
-
-EXCLUDE_DIRECTORIES=${DISALLOWED_FUNCTIONS_EXCLUDED_DIRECTORIES:-"examples"}
-DISALLOWED_FUNCTIONS=('os.Exit(' 'panic(' 'Fatal(' 'Fatalf(' 'Fatalln(' 'fmt.Println(' 'fmt.Printf(' 'log.Print(' 'log.Println(' 'log.Printf(')
-
-files=$(
-  find "$SCRIPT_PATH/.." -name "*.go" \
-    | grep -v -e '^.*_test.go$' \
-    | while read file
-    do
-      excluded=false
-      for ex in $EXCLUDE_DIRECTORIES
-      do
-        if [[ $file == */$ex/* ]]
-        then
-          excluded=true
-          break
-        fi
-      done
-      $excluded || echo "$file"
-    done
-)
-
-for disallowedFunction in "${DISALLOWED_FUNCTIONS[@]}"
-do
-	if grep -e "$disallowedFunction" $files | grep -v -e 'nolint'; then
-		echo "$disallowedFunction may only be used in example code"
-		exit 1
-	fi
-done
--- a/anylink/dtls-2.0.9/.github/lint-filename.sh
+++ b/anylink/dtls-2.0.9/.github/lint-filename.sh
@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-set -e
-
-SCRIPT_PATH=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
-GO_REGEX="^[a-zA-Z][a-zA-Z0-9_]*\.go$"
-
-find  "$SCRIPT_PATH/.." -name "*.go" | while read fullpath; do
-  filename=$(basename -- "$fullpath")
-
-  if ! [[ $filename =~ $GO_REGEX ]]; then
-      echo "$filename is not a valid filename for Go code, only alpha, numbers and underscores are supported"
-      exit 1
-  fi
-done
--- a/anylink/dtls-2.0.9/.github/workflows/e2e.yaml
+++ b/anylink/dtls-2.0.9/.github/workflows/e2e.yaml
@ -1,20 +0,0 @@
-name: E2E
-on:
-  pull_request:
-    branches:
-      - master
-  push:
-    branches:
-      - master
-
-jobs:
-  e2e-test:
-    name: Test
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: test
-        run: |
-          docker build -t pion-dtls-e2e -f e2e/Dockerfile .
-          docker run -i --rm pion-dtls-e2e
--- a/anylink/dtls-2.0.9/.github/workflows/lint.yaml
+++ b/anylink/dtls-2.0.9/.github/workflows/lint.yaml
@ -1,43 +0,0 @@
-name: Lint
-on:
-  pull_request:
-    types:
-      - opened
-      - edited
-      - synchronize
-jobs:
-  lint-commit-message:
-    name: Metadata
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-    steps:
-        - uses: actions/checkout@v2
-          with:
-            fetch-depth: 0
-
-        - name: Commit Message
-          run: .github/lint-commit-message.sh
-
-        - name: File names
-          run: .github/lint-filename.sh
-
-        - name: Contributors
-          run: .github/assert-contributors.sh
-
-        - name: Functions
-          run: .github/lint-disallowed-functions-in-library.sh
-
-  lint-go:
-    name: Go
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2
-        with:
-          version: v1.31
-          args: $GOLANGCI_LINT_EXRA_ARGS
--- a/anylink/dtls-2.0.9/.github/workflows/renovate-go-mod-fix.yaml
+++ b/anylink/dtls-2.0.9/.github/workflows/renovate-go-mod-fix.yaml
@ -1,33 +0,0 @@
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-# If this repository should have package specific CI config,
-# remove the repository name from .goassets/.github/workflows/assets-sync.yml.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-name: go-mod-fix
-on:
-  push:
-    branches:
-      - renovate/*
-
-jobs:
-  go-mod-fix:
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 2
-      - name: fix
-        uses: at-wat/go-sum-fix-action@v0
-        with:
-          git_user: Pion Bot
-          git_email: 59523206+pionbot@users.noreply.github.com
-          github_token: ${{ secrets.PIONBOT_PRIVATE_KEY }}
-          commit_style: squash
-          push: force
--- a/anylink/dtls-2.0.9/.github/workflows/test.yaml
+++ b/anylink/dtls-2.0.9/.github/workflows/test.yaml
@ -1,139 +0,0 @@
-name: Test
-on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: ["1.15", "1.16"]
-      fail-fast: false
-    name: Go ${{ matrix.go }}
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: actions/cache@v2
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/go/bin
-            ~/.cache
-          key: ${{ runner.os }}-amd64-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-amd64-go-
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.go }}
-
-      - name: Setup go-acc
-        run: |
-          go get github.com/ory/go-acc
-          git checkout go.mod go.sum
-
-      - name: Run test
-        run: |
-          go-acc -o cover.out ./... -- \
-          -bench=. \
-          -v -race
-
-      - uses: codecov/codecov-action@v1
-        with:
-          file: ./cover.out
-          name: codecov-umbrella
-          fail_ci_if_error: true
-          flags: go
-
-  test-i386:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: ["1.15", "1.16"]
-      fail-fast: false
-    name: Go i386 ${{ matrix.go }}
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: actions/cache@v2
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/.cache
-          key: ${{ runner.os }}-i386-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-i386-go-
-
-      - name: Run test
-        run: |
-          mkdir -p $HOME/go/pkg/mod $HOME/.cache
-          docker run \
-          -u $(id -u):$(id -g) \
-          -e "GO111MODULE=on" \
-          -e "CGO_ENABLED=0" \
-          -v $GITHUB_WORKSPACE:/go/src/github.com/pion/$(basename $GITHUB_WORKSPACE) \
-          -v $HOME/go/pkg/mod:/go/pkg/mod \
-          -v $HOME/.cache:/.cache \
-          -w /go/src/github.com/pion/$(basename $GITHUB_WORKSPACE) \
-          i386/golang:${{matrix.go}}-alpine \
-          /usr/local/go/bin/go test \
-            ${TEST_EXTRA_ARGS:-} \
-            -v ./...
-
-  test-wasm:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-    name: WASM
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Use Node.js
-        uses: actions/setup-node@v2
-        with:
-          node-version: '12.x'
-
-      - uses: actions/cache@v2
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/.cache
-          key: ${{ runner.os }}-wasm-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-wasm-go-
-
-      - name: Download Go
-        run: curl -sSfL https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz | tar -C ~ -xzf -
-        env:
-          GO_VERSION: 1.16
-
-      - name: Set Go Root
-        run: echo "GOROOT=${HOME}/go" >> $GITHUB_ENV
-
-      - name: Set Go Path
-        run: echo "GOPATH=${HOME}/go" >> $GITHUB_ENV
-
-      - name: Set Go Path
-        run: echo "GO_JS_WASM_EXEC=${GOROOT}/misc/wasm/go_js_wasm_exec" >> $GITHUB_ENV
-
-      - name: Insall NPM modules
-        run: yarn install
-
-      - name: Run Tests
-        run: |
-          GOOS=js GOARCH=wasm $GOPATH/bin/go test \
-          -coverprofile=cover.out -covermode=atomic \
-          -exec="${GO_JS_WASM_EXEC}" \
-          -v ./...
-
-      - uses: codecov/codecov-action@v1
-        with:
-          file: ./cover.out
-          name: codecov-umbrella
-          fail_ci_if_error: true
-          flags: wasm
--- a/anylink/dtls-2.0.9/.github/workflows/tidy-check.yaml
+++ b/anylink/dtls-2.0.9/.github/workflows/tidy-check.yaml
@ -1,37 +0,0 @@
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-# If this repository should have package specific CI config,
-# remove the repository name from .goassets/.github/workflows/assets-sync.yml.
-#
-# If you want to update the shared CI config, send a PR to
-# https://github.com/pion/.goassets instead of this repository.
-#
-
-name: Go mod tidy
-on:
-  pull_request:
-    branches:
-      - master
-  push:
-    branches:
-      - master
-
-jobs:
-  Check:
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: Setup Go
-        uses: actions/setup-go@v2
-      - name: check
-        run: |
-          go mod download
-          go mod tidy
-          if ! git diff --exit-code
-          then
-            echo "Not go mod tidied"
-            exit 1
-          fi
--- a/anylink/dtls-2.0.9/.gitignore
+++ b/anylink/dtls-2.0.9/.gitignore
@ -1,24 +0,0 @@
-### JetBrains IDE ###
-#####################
-.idea/
-
-### Emacs Temporary Files ###
-#############################
-*~
-
-### Folders ###
-###############
-bin/
-vendor/
-node_modules/
-
-### Files ###
-#############
-*.ivf
-*.ogg
-tags
-cover.out
-*.sw[poe]
-*.wasm
-examples/sfu-ws/cert.pem
-examples/sfu-ws/key.pem
--- a/anylink/dtls-2.0.9/.golangci.yml
+++ b/anylink/dtls-2.0.9/.golangci.yml
@ -1,89 +0,0 @@
-linters-settings:
-  govet:
-    check-shadowing: true
-  misspell:
-    locale: US
-  exhaustive:
-    default-signifies-exhaustive: true
-  gomodguard:
-    blocked:
-      modules:
-        - github.com/pkg/errors:
-            recommendations:
-            - errors
-
-linters:
-  enable:
-    - asciicheck       # Simple linter to check that your code does not contain non-ASCII identifiers
-    - bodyclose        # checks whether HTTP response body is closed successfully
-    - deadcode         # Finds unused code
-    - depguard         # Go linter that checks if package imports are in a list of acceptable packages
-    - dogsled          # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
-    - dupl             # Tool for code clone detection
-    - errcheck         # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases
-    - exhaustive       # check exhaustiveness of enum switch statements
-    - exportloopref    # checks for pointers to enclosing loop variables
-    - gci              # Gci control golang package import order and make it always deterministic.
-    - gochecknoglobals # Checks that no globals are present in Go code
-    - gochecknoinits   # Checks that no init functions are present in Go code
-    - gocognit         # Computes and checks the cognitive complexity of functions
-    - goconst          # Finds repeated strings that could be replaced by a constant
-    - gocritic         # The most opinionated Go source code linter
-    - godox            # Tool for detection of FIXME, TODO and other comment keywords
-    - goerr113         # Golang linter to check the errors handling expressions
-    - gofmt            # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
-    - gofumpt          # Gofumpt checks whether code was gofumpt-ed.
-    - goheader         # Checks is file header matches to pattern
-    - goimports        # Goimports does everything that gofmt does. Additionally it checks unused imports
-    - golint           # Golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes
-    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
-    - goprintffuncname # Checks that printf-like functions are named with `f` at the end
-    - gosec            # Inspects source code for security problems
-    - gosimple         # Linter for Go source code that specializes in simplifying a code
-    - govet            # Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string
-    - ineffassign      # Detects when assignments to existing variables are not used
-    - misspell         # Finds commonly misspelled English words in comments
-    - nakedret         # Finds naked returns in functions greater than a specified function length
-    - noctx            # noctx finds sending http request without context.Context
-    - scopelint        # Scopelint checks for unpinned variables in go programs
-    - staticcheck      # Staticcheck is a go vet on steroids, applying a ton of static analysis checks
-    - structcheck      # Finds unused struct fields
-    - stylecheck       # Stylecheck is a replacement for golint
-    - typecheck        # Like the front-end of a Go compiler, parses and type-checks Go code
-    - unconvert        # Remove unnecessary type conversions
-    - unparam          # Reports unused function parameters
-    - unused           # Checks Go code for unused constants, variables, functions and types
-    - varcheck         # Finds unused global variables and constants
-    - whitespace       # Tool for detection of leading and trailing whitespace
-  disable:
-    - funlen           # Tool for detection of long functions
-    - gocyclo          # Computes and checks the cyclomatic complexity of functions
-    - godot            # Check if comments end in a period
-    - gomnd            # An analyzer to detect magic numbers.
-    - lll              # Reports long lines
-    - maligned         # Tool to detect Go structs that would take less memory if their fields were sorted
-    - nestif           # Reports deeply nested if statements
-    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
-    - nolintlint       # Reports ill-formed or insufficient nolint directives
-    - prealloc         # Finds slice declarations that could potentially be preallocated
-    - rowserrcheck     # checks whether Err of rows is checked successfully
-    - sqlclosecheck    # Checks that sql.Rows and sql.Stmt are closed.
-    - testpackage      # linter that makes you use a separate _test package
-    - wsl              # Whitespace Linter - Forces you to use empty lines!
-
-issues:
-  exclude-use-default: false
-  exclude-rules:
-    # Allow complex tests, better to be self contained
-    - path: _test\.go
-      linters:
-        - gocognit
-
-    # Allow complex main function in examples
-    - path: examples
-      text: "of func `main` is high"
-      linters:
-        - gocognit
-
-run:
-  skip-dirs-use-default: false
--- a/anylink/dtls-2.0.9/LICENSE
+++ b/anylink/dtls-2.0.9/LICENSE
@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2018 
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
--- a/anylink/dtls-2.0.9/Makefile
+++ b/anylink/dtls-2.0.9/Makefile
@ -1,6 +0,0 @@
-fuzz-build-record-layer: fuzz-prepare
-	go-fuzz-build -tags gofuzz -func FuzzRecordLayer
-fuzz-run-record-layer:
-	go-fuzz -bin dtls-fuzz.zip -workdir fuzz
-fuzz-prepare:
-	@GO111MODULE=on go mod vendor
--- a/anylink/dtls-2.0.9/README.md
+++ b/anylink/dtls-2.0.9/README.md
@ -1,156 +0,0 @@
-<h1 align="center">
-  <br>
-  Pion DTLS
-  <br>
-</h1>
-<h4 align="center">A Go implementation of DTLS</h4>
-<p align="center">
-  <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-dtls-gray.svg?longCache=true&colorB=brightgreen" alt="Pion DTLS"></a>
-  <a href="https://sourcegraph.com/github.com/pion/dtls"><img src="https://sourcegraph.com/github.com/pion/dtls/-/badge.svg" alt="Sourcegraph Widget"></a>
-  <a href="https://pion.ly/slack"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
-  <br>
-  <a href="https://travis-ci.org/pion/dtls"><img src="https://travis-ci.org/pion/dtls.svg?branch=master" alt="Build Status"></a>
-  <a href="https://pkg.go.dev/github.com/pion/dtls"><img src="https://godoc.org/github.com/pion/dtls?status.svg" alt="GoDoc"></a>
-  <a href="https://codecov.io/gh/pion/dtls"><img src="https://codecov.io/gh/pion/dtls/branch/master/graph/badge.svg" alt="Coverage Status"></a>
-  <a href="https://goreportcard.com/report/github.com/pion/dtls"><img src="https://goreportcard.com/badge/github.com/pion/dtls" alt="Go Report Card"></a>
-  <a href="https://www.codacy.com/app/Sean-Der/dtls"><img src="https://api.codacy.com/project/badge/Grade/18f4aec384894e6aac0b94effe51961d" alt="Codacy Badge"></a>
-  <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a>
-</p>
-<br>
-
-Native [DTLS 1.2][rfc6347] implementation in the Go programming language.
-
-A long term goal is a professional security review, and maye inclusion in stdlib.
-
-[rfc6347]: https://tools.ietf.org/html/rfc6347
-
-### Goals/Progress
-This will only be targeting DTLS 1.2, and the most modern/common cipher suites.
-We would love contributes that fall under the 'Planned Features' and fixing any bugs!
-
-#### Current features
-* DTLS 1.2 Client/Server
-* Key Exchange via ECDHE(curve25519, nistp256, nistp384) and PSK
-* Packet loss and re-ordering is handled during handshaking
-* Key export ([RFC 5705][rfc5705])
-* Serialization and Resumption of sessions
-* Extended Master Secret extension ([RFC 7627][rfc7627])
-
-[rfc5705]: https://tools.ietf.org/html/rfc5705
-[rfc7627]: https://tools.ietf.org/html/rfc7627
-
-#### Supported ciphers
-
-##### ECDHE
-* TLS_ECDHE_ECDSA_WITH_AES_128_CCM ([RFC 6655][rfc6655])
-* TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 ([RFC 6655][rfc6655])
-* TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ([RFC 5289][rfc5289])
-* TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ([RFC 5289][rfc5289])
-* TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA ([RFC 8422][rfc8422])
-* TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA ([RFC 8422][rfc8422])
-
-##### PSK
-* TLS_PSK_WITH_AES_128_CCM ([RFC 6655][rfc6655])
-* TLS_PSK_WITH_AES_128_CCM_8 ([RFC 6655][rfc6655])
-* TLS_PSK_WITH_AES_128_GCM_SHA256 ([RFC 5487][rfc5487])
-* TLS_PSK_WITH_AES_128_CBC_SHA256 ([RFC 5487][rfc5487])
-
-[rfc5289]: https://tools.ietf.org/html/rfc5289
-[rfc8422]: https://tools.ietf.org/html/rfc8422
-[rfc6655]: https://tools.ietf.org/html/rfc6655
-[rfc5487]: https://tools.ietf.org/html/rfc5487
-
-#### Planned Features
-* Chacha20Poly1305
-
-#### Excluded Features
-* DTLS 1.0
-* Renegotiation
-* Compression
-
-### Using
-
-This library needs at least Go 1.13, and you should have [Go modules
-enabled](https://github.com/golang/go/wiki/Modules).
-
-#### Pion DTLS
-For a DTLS 1.2 Server that listens on 127.0.0.1:4444
-```sh
-go run examples/listen/selfsign/main.go
-```
-
-For a DTLS 1.2 Client that connects to 127.0.0.1:4444
-```sh
-go run examples/dial/selfsign/main.go
-```
-
-#### OpenSSL
-Pion DTLS can connect to itself and OpenSSL.
-```
-  // Generate a certificate
-  openssl ecparam -out key.pem -name prime256v1 -genkey
-  openssl req -new -sha256 -key key.pem -out server.csr
-  openssl x509 -req -sha256 -days 365 -in server.csr -signkey key.pem -out cert.pem
-
-  // Use with examples/dial/selfsign/main.go
-  openssl s_server -dtls1_2 -cert cert.pem -key key.pem -accept 4444
-
-  // Use with examples/listen/selfsign/main.go
-  openssl s_client -dtls1_2 -connect 127.0.0.1:4444 -debug -cert cert.pem -key key.pem
-```
-
-### Using with PSK
-Pion DTLS also comes with examples that do key exchange via PSK
-
-
-#### Pion DTLS
-```sh
-go run examples/listen/psk/main.go
-```
-
-```sh
-go run examples/dial/psk/main.go
-```
-
-#### OpenSSL
-```
-  // Use with examples/dial/psk/main.go
-  openssl s_server -dtls1_2 -accept 4444 -nocert -psk abc123 -cipher PSK-AES128-CCM8
-
-  // Use with examples/listen/psk/main.go
-  openssl s_client -dtls1_2 -connect 127.0.0.1:4444 -psk abc123 -cipher PSK-AES128-CCM8
-```
-
-### Contributing
-Check out the **[contributing wiki](https://github.com/pion/webrtc/wiki/Contributing)** to join the group of amazing people making this project possible:
-
-* [Sean DuBois](https://github.com/Sean-Der) - *Original Author*
-* [Michiel De Backker](https://github.com/backkem) - *Public API*
-* [Chris Hiszpanski](https://github.com/thinkski) - *Support Signature Algorithms Extension*
-* [Iñigo Garcia Olaizola](https://github.com/igolaizola) - *Serialization & resumption, cert verification, E2E*
-* [Daniele Sluijters](https://github.com/daenney) - *AES-CCM support*
-* [Jin Lei](https://github.com/jinleileiking) - *Logging*
-* [Hugo Arregui](https://github.com/hugoArregui)
-* [Lander Noterman](https://github.com/LanderN)
-* [Aleksandr Razumov](https://github.com/ernado) - *Fuzzing*
-* [Ryan Gordon](https://github.com/ryangordon)
-* [Stefan Tatschner](https://rumpelsepp.org/contact.html)
-* [Hayden James](https://github.com/hjames9)
-* [Jozef Kralik](https://github.com/jkralik)
-* [Robert Eperjesi](https://github.com/epes)
-* [Atsushi Watanabe](https://github.com/at-wat)
-* [Julien Salleyron](https://github.com/juliens) - *Server Name Indication*
-* [Jeroen de Bruijn](https://github.com/vidavidorra)
-* [bjdgyc](https://github.com/bjdgyc)
-* [Jeffrey Stoke (Jeff Ctor)](https://github.com/jeffreystoke) - *Fragmentbuffer Fix*
-* [Frank Olbricht](https://github.com/folbricht)
-* [ZHENK](https://github.com/scorpionknifes)
-* [Carson Hoffman](https://github.com/CarsonHoffman)
-* [Vadim Filimonov](https://github.com/fffilimonov)
-* [Jim Wert](https://github.com/bocajim)
-* [Alvaro Viebrantz](https://github.com/alvarowolfx)
-* [Kegan Dougal](https://github.com/Kegsay)
-* [Michael Zabka](https://github.com/misak113)
-
-### License
-MIT License - see [LICENSE](LICENSE) for full text
--- a/anylink/dtls-2.0.9/bench_test.go
+++ b/anylink/dtls-2.0.9/bench_test.go
@ -1,118 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"crypto/tls"
-	"fmt"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2/internal/net/dpipe"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-	"github.com/pion/logging"
-	"github.com/pion/transport/test"
-)
-
-func TestSimpleReadWrite(t *testing.T) {
-	report := test.CheckRoutines(t)
-	defer report()
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-
-	ca, cb := dpipe.Pipe()
-	certificate, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatal(err)
-	}
-	gotHello := make(chan struct{})
-
-	go func() {
-		server, sErr := testServer(ctx, cb, &Config{
-			Certificates:  []tls.Certificate{certificate},
-			LoggerFactory: logging.NewDefaultLoggerFactory(),
-		}, false)
-		if sErr != nil {
-			t.Error(sErr)
-			return
-		}
-		buf := make([]byte, 1024)
-		if _, sErr = server.Read(buf); sErr != nil {
-			t.Error(sErr)
-		}
-		gotHello <- struct{}{}
-		if sErr = server.Close(); sErr != nil {
-			t.Error(sErr)
-		}
-	}()
-
-	client, err := testClient(ctx, ca, &Config{
-		LoggerFactory:      logging.NewDefaultLoggerFactory(),
-		InsecureSkipVerify: true,
-	}, false)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if _, err = client.Write([]byte("hello")); err != nil {
-		t.Error(err)
-	}
-	select {
-	case <-gotHello:
-		// OK
-	case <-time.After(time.Second * 5):
-		t.Error("timeout")
-	}
-
-	if err = client.Close(); err != nil {
-		t.Error(err)
-	}
-}
-
-func benchmarkConn(b *testing.B, n int64) {
-	b.Run(fmt.Sprintf("%d", n), func(b *testing.B) {
-		ctx := context.Background()
-
-		ca, cb := dpipe.Pipe()
-		certificate, err := selfsign.GenerateSelfSigned()
-		server := make(chan *Conn)
-		go func() {
-			s, sErr := testServer(ctx, cb, &Config{
-				Certificates: []tls.Certificate{certificate},
-			}, false)
-			if err != nil {
-				b.Error(sErr)
-				return
-			}
-			server <- s
-		}()
-		if err != nil {
-			b.Fatal(err)
-		}
-		hw := make([]byte, n)
-		b.ReportAllocs()
-		b.SetBytes(int64(len(hw)))
-		go func() {
-			client, cErr := testClient(ctx, ca, &Config{InsecureSkipVerify: true}, false)
-			if cErr != nil {
-				b.Error(err)
-			}
-			for {
-				if _, cErr = client.Write(hw); cErr != nil {
-					b.Error(err)
-				}
-			}
-		}()
-		s := <-server
-		buf := make([]byte, 2048)
-		for i := 0; i < b.N; i++ {
-			if _, err = s.Read(buf); err != nil {
-				b.Error(err)
-			}
-		}
-	})
-}
-
-func BenchmarkConnReadWrite(b *testing.B) {
-	for _, n := range []int64{16, 128, 512, 1024, 2048} {
-		benchmarkConn(b, n)
-	}
-}
--- a/anylink/dtls-2.0.9/certificate.go
+++ b/anylink/dtls-2.0.9/certificate.go
@ -1,67 +0,0 @@
-package dtls
-
-import (
-	"crypto/tls"
-	"crypto/x509"
-	"strings"
-)
-
-func (c *handshakeConfig) getCertificate(serverName string) (*tls.Certificate, error) {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-
-	if c.nameToCertificate == nil {
-		nameToCertificate := make(map[string]*tls.Certificate)
-		for i := range c.localCertificates {
-			cert := &c.localCertificates[i]
-			x509Cert := cert.Leaf
-			if x509Cert == nil {
-				var parseErr error
-				x509Cert, parseErr = x509.ParseCertificate(cert.Certificate[0])
-				if parseErr != nil {
-					continue
-				}
-			}
-			if len(x509Cert.Subject.CommonName) > 0 {
-				nameToCertificate[strings.ToLower(x509Cert.Subject.CommonName)] = cert
-			}
-			for _, san := range x509Cert.DNSNames {
-				nameToCertificate[strings.ToLower(san)] = cert
-			}
-		}
-		c.nameToCertificate = nameToCertificate
-	}
-
-	if len(c.localCertificates) == 0 {
-		return nil, errNoCertificates
-	}
-
-	if len(c.localCertificates) == 1 {
-		// There's only one choice, so no point doing any work.
-		return &c.localCertificates[0], nil
-	}
-
-	if len(serverName) == 0 {
-		return &c.localCertificates[0], nil
-	}
-
-	name := strings.TrimRight(strings.ToLower(serverName), ".")
-
-	if cert, ok := c.nameToCertificate[name]; ok {
-		return cert, nil
-	}
-
-	// try replacing labels in the name with wildcards until we get a
-	// match.
-	labels := strings.Split(name, ".")
-	for i := range labels {
-		labels[i] = "*"
-		candidate := strings.Join(labels, ".")
-		if cert, ok := c.nameToCertificate[candidate]; ok {
-			return cert, nil
-		}
-	}
-
-	// If nothing matches, return the first certificate.
-	return &c.localCertificates[0], nil
-}
--- a/anylink/dtls-2.0.9/certificate_test.go
+++ b/anylink/dtls-2.0.9/certificate_test.go
@ -1,79 +0,0 @@
-package dtls
-
-import (
-	"crypto/tls"
-	"reflect"
-	"testing"
-
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-)
-
-func TestGetCertificate(t *testing.T) {
-	certificateWildcard, err := selfsign.GenerateSelfSignedWithDNS("*.test.test")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	certificateTest, err := selfsign.GenerateSelfSignedWithDNS("test.test", "www.test.test", "pop.test.test")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	certificateRandom, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	cfg := &handshakeConfig{
-		localCertificates: []tls.Certificate{
-			certificateRandom,
-			certificateTest,
-			certificateWildcard,
-		},
-	}
-
-	testCases := []struct {
-		desc                string
-		serverName          string
-		expectedCertificate tls.Certificate
-	}{
-		{
-			desc:                "Simple match in CN",
-			serverName:          "test.test",
-			expectedCertificate: certificateTest,
-		},
-		{
-			desc:                "Simple match in SANs",
-			serverName:          "www.test.test",
-			expectedCertificate: certificateTest,
-		},
-
-		{
-			desc:                "Wildcard match",
-			serverName:          "foo.test.test",
-			expectedCertificate: certificateWildcard,
-		},
-		{
-			desc:                "No match return first",
-			serverName:          "foo.bar",
-			expectedCertificate: certificateRandom,
-		},
-	}
-
-	for _, test := range testCases {
-		test := test
-
-		t.Run(test.desc, func(t *testing.T) {
-			t.Parallel()
-
-			cert, err := cfg.getCertificate(test.serverName)
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			if !reflect.DeepEqual(cert.Leaf, test.expectedCertificate.Leaf) {
-				t.Fatalf("Certificate does not match: expected(%v) actual(%v)", test.expectedCertificate.Leaf, cert.Leaf)
-			}
-		})
-	}
-}
--- a/anylink/dtls-2.0.9/cipher_suite.go
+++ b/anylink/dtls-2.0.9/cipher_suite.go
@ -1,213 +0,0 @@
-package dtls
-
-import (
-	"fmt"
-	"hash"
-
-	"github.com/pion/dtls/v2/internal/ciphersuite"
-	"github.com/pion/dtls/v2/pkg/crypto/clientcertificate"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-// CipherSuiteID is an ID for our supported CipherSuites
-type CipherSuiteID = ciphersuite.ID
-
-// Supported Cipher Suites
-const (
-	// AES-128-CCM
-	TLS_ECDHE_ECDSA_WITH_AES_128_CCM   CipherSuiteID = ciphersuite.TLS_ECDHE_ECDSA_WITH_AES_128_CCM   //nolint:golint,stylecheck
-	TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 CipherSuiteID = ciphersuite.TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 //nolint:golint,stylecheck
-
-	// AES-128-GCM-SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 CipherSuiteID = ciphersuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 //nolint:golint,stylecheck
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   CipherSuiteID = ciphersuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   //nolint:golint,stylecheck
-
-	// AES-256-CBC-SHA
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA CipherSuiteID = ciphersuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA //nolint:golint,stylecheck
-	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   CipherSuiteID = ciphersuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   //nolint:golint,stylecheck
-
-	TLS_PSK_WITH_AES_128_CCM        CipherSuiteID = ciphersuite.TLS_PSK_WITH_AES_128_CCM        //nolint:golint,stylecheck
-	TLS_PSK_WITH_AES_128_CCM_8      CipherSuiteID = ciphersuite.TLS_PSK_WITH_AES_128_CCM_8      //nolint:golint,stylecheck
-	TLS_PSK_WITH_AES_128_GCM_SHA256 CipherSuiteID = ciphersuite.TLS_PSK_WITH_AES_128_GCM_SHA256 //nolint:golint,stylecheck
-	TLS_PSK_WITH_AES_128_CBC_SHA256 CipherSuiteID = ciphersuite.TLS_PSK_WITH_AES_128_CBC_SHA256 //nolint:golint,stylecheck
-)
-
-// CipherSuiteAuthenticationType controls what authentication method is using during the handshake for a CipherSuite
-type CipherSuiteAuthenticationType = ciphersuite.AuthenticationType
-
-// AuthenticationType Enums
-const (
-	CipherSuiteAuthenticationTypeCertificate  CipherSuiteAuthenticationType = ciphersuite.AuthenticationTypeCertificate
-	CipherSuiteAuthenticationTypePreSharedKey CipherSuiteAuthenticationType = ciphersuite.AuthenticationTypePreSharedKey
-	CipherSuiteAuthenticationTypeAnonymous    CipherSuiteAuthenticationType = ciphersuite.AuthenticationTypeAnonymous
-)
-
-var _ = allCipherSuites() // Necessary until this function isn't only used by Go 1.14
-
-// CipherSuite is an interface that all DTLS CipherSuites must satisfy
-type CipherSuite interface {
-	// String of CipherSuite, only used for logging
-	String() string
-
-	// ID of CipherSuite.
-	ID() CipherSuiteID
-
-	// What type of Certificate does this CipherSuite use
-	CertificateType() clientcertificate.Type
-
-	// What Hash function is used during verification
-	HashFunc() func() hash.Hash
-
-	// AuthenticationType controls what authentication method is using during the handshake
-	AuthenticationType() CipherSuiteAuthenticationType
-
-	// Called when keying material has been generated, should initialize the internal cipher
-	Init(masterSecret, clientRandom, serverRandom []byte, isClient bool) error
-	IsInitialized() bool
-
-	Encrypt(pkt *recordlayer.RecordLayer, raw []byte) ([]byte, error)
-	Decrypt(in []byte) ([]byte, error)
-}
-
-// CipherSuiteName provides the same functionality as tls.CipherSuiteName
-// that appeared first in Go 1.14.
-//
-// Our implementation differs slightly in that it takes in a CiperSuiteID,
-// like the rest of our library, instead of a uint16 like crypto/tls.
-func CipherSuiteName(id CipherSuiteID) string {
-	suite := cipherSuiteForID(id, nil)
-	if suite != nil {
-		return suite.String()
-	}
-	return fmt.Sprintf("0x%04X", uint16(id))
-}
-
-// Taken from https://www.iana.org/assignments/tls-parameters/tls-parameters.xml
-// A cipherSuite is a specific combination of key agreement, cipher and MAC
-// function.
-func cipherSuiteForID(id CipherSuiteID, customCiphers func() []CipherSuite) CipherSuite {
-	switch id { //nolint:exhaustive
-	case TLS_ECDHE_ECDSA_WITH_AES_128_CCM:
-		return ciphersuite.NewTLSEcdheEcdsaWithAes128Ccm()
-	case TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8:
-		return ciphersuite.NewTLSEcdheEcdsaWithAes128Ccm8()
-	case TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
-		return &ciphersuite.TLSEcdheEcdsaWithAes128GcmSha256{}
-	case TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
-		return &ciphersuite.TLSEcdheRsaWithAes128GcmSha256{}
-	case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:
-		return &ciphersuite.TLSEcdheEcdsaWithAes256CbcSha{}
-	case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
-		return &ciphersuite.TLSEcdheRsaWithAes256CbcSha{}
-	case TLS_PSK_WITH_AES_128_CCM:
-		return ciphersuite.NewTLSPskWithAes128Ccm()
-	case TLS_PSK_WITH_AES_128_CCM_8:
-		return ciphersuite.NewTLSPskWithAes128Ccm8()
-	case TLS_PSK_WITH_AES_128_GCM_SHA256:
-		return &ciphersuite.TLSPskWithAes128GcmSha256{}
-	case TLS_PSK_WITH_AES_128_CBC_SHA256:
-		return &ciphersuite.TLSPskWithAes128CbcSha256{}
-	}
-
-	if customCiphers != nil {
-		for _, c := range customCiphers() {
-			if c.ID() == id {
-				return c
-			}
-		}
-	}
-
-	return nil
-}
-
-// CipherSuites we support in order of preference
-func defaultCipherSuites() []CipherSuite {
-	return []CipherSuite{
-		&ciphersuite.TLSEcdheEcdsaWithAes128GcmSha256{},
-		&ciphersuite.TLSEcdheRsaWithAes128GcmSha256{},
-		&ciphersuite.TLSEcdheEcdsaWithAes256CbcSha{},
-		&ciphersuite.TLSEcdheRsaWithAes256CbcSha{},
-	}
-}
-
-func allCipherSuites() []CipherSuite {
-	return []CipherSuite{
-		ciphersuite.NewTLSEcdheEcdsaWithAes128Ccm(),
-		ciphersuite.NewTLSEcdheEcdsaWithAes128Ccm8(),
-		&ciphersuite.TLSEcdheEcdsaWithAes128GcmSha256{},
-		&ciphersuite.TLSEcdheRsaWithAes128GcmSha256{},
-		&ciphersuite.TLSEcdheEcdsaWithAes256CbcSha{},
-		&ciphersuite.TLSEcdheRsaWithAes256CbcSha{},
-		ciphersuite.NewTLSPskWithAes128Ccm(),
-		ciphersuite.NewTLSPskWithAes128Ccm8(),
-		&ciphersuite.TLSPskWithAes128GcmSha256{},
-	}
-}
-
-func cipherSuiteIDs(cipherSuites []CipherSuite) []uint16 {
-	rtrn := []uint16{}
-	for _, c := range cipherSuites {
-		rtrn = append(rtrn, uint16(c.ID()))
-	}
-	return rtrn
-}
-
-func parseCipherSuites(userSelectedSuites []CipherSuiteID, customCipherSuites func() []CipherSuite, includeCertificateSuites, includePSKSuites bool) ([]CipherSuite, error) {
-	cipherSuitesForIDs := func(ids []CipherSuiteID) ([]CipherSuite, error) {
-		cipherSuites := []CipherSuite{}
-		for _, id := range ids {
-			c := cipherSuiteForID(id, nil)
-			if c == nil {
-				return nil, &invalidCipherSuite{id}
-			}
-			cipherSuites = append(cipherSuites, c)
-		}
-		return cipherSuites, nil
-	}
-
-	var (
-		cipherSuites []CipherSuite
-		err          error
-		i            int
-	)
-	if userSelectedSuites != nil {
-		cipherSuites, err = cipherSuitesForIDs(userSelectedSuites)
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		cipherSuites = defaultCipherSuites()
-	}
-
-	// Put CustomCipherSuites before ID selected suites
-	if customCipherSuites != nil {
-		cipherSuites = append(customCipherSuites(), cipherSuites...)
-	}
-
-	var foundCertificateSuite, foundPSKSuite, foundAnonymousSuite bool
-	for _, c := range cipherSuites {
-		switch {
-		case includeCertificateSuites && c.AuthenticationType() == CipherSuiteAuthenticationTypeCertificate:
-			foundCertificateSuite = true
-		case includePSKSuites && c.AuthenticationType() == CipherSuiteAuthenticationTypePreSharedKey:
-			foundPSKSuite = true
-		case c.AuthenticationType() == CipherSuiteAuthenticationTypeAnonymous:
-			foundAnonymousSuite = true
-		default:
-			continue
-		}
-		cipherSuites[i] = c
-		i++
-	}
-
-	switch {
-	case includeCertificateSuites && !foundCertificateSuite && !foundAnonymousSuite:
-		return nil, errNoAvailableCertificateCipherSuite
-	case includePSKSuites && !foundPSKSuite:
-		return nil, errNoAvailablePSKCipherSuite
-	case i == 0:
-		return nil, errNoAvailableCipherSuites
-	}
-
-	return cipherSuites[:i], nil
-}
--- a/anylink/dtls-2.0.9/cipher_suite_go114.go
+++ b/anylink/dtls-2.0.9/cipher_suite_go114.go
@ -1,40 +0,0 @@
-// +build go1.14
-
-package dtls
-
-import (
-	"crypto/tls"
-)
-
-// VersionDTLS12 is the DTLS version in the same style as
-// VersionTLSXX from crypto/tls
-const VersionDTLS12 = 0xfefd
-
-// Convert from our cipherSuite interface to a tls.CipherSuite struct
-func toTLSCipherSuite(c CipherSuite) *tls.CipherSuite {
-	return &tls.CipherSuite{
-		ID:                uint16(c.ID()),
-		Name:              c.String(),
-		SupportedVersions: []uint16{VersionDTLS12},
-		Insecure:          false,
-	}
-}
-
-// CipherSuites returns a list of cipher suites currently implemented by this
-// package, excluding those with security issues, which are returned by
-// InsecureCipherSuites.
-func CipherSuites() []*tls.CipherSuite {
-	suites := allCipherSuites()
-	res := make([]*tls.CipherSuite, len(suites))
-	for i, c := range suites {
-		res[i] = toTLSCipherSuite(c)
-	}
-	return res
-}
-
-// InsecureCipherSuites returns a list of cipher suites currently implemented by
-// this package and which have security issues.
-func InsecureCipherSuites() []*tls.CipherSuite {
-	var res []*tls.CipherSuite
-	return res
-}
--- a/anylink/dtls-2.0.9/cipher_suite_go114_test.go
+++ b/anylink/dtls-2.0.9/cipher_suite_go114_test.go
@ -1,51 +0,0 @@
-// +build go1.14
-
-package dtls
-
-import (
-	"testing"
-)
-
-func TestInsecureCipherSuites(t *testing.T) {
-	r := InsecureCipherSuites()
-
-	if len(r) != 0 {
-		t.Fatalf("Expected no insecure ciphersuites, got %d", len(r))
-	}
-}
-
-func TestCipherSuites(t *testing.T) {
-	ours := allCipherSuites()
-	theirs := CipherSuites()
-
-	if len(ours) != len(theirs) {
-		t.Fatalf("Expected %d CipherSuites, got %d", len(ours), len(theirs))
-	}
-
-	for i, s := range ours {
-		i := i
-		s := s
-		t.Run(s.String(), func(t *testing.T) {
-			c := theirs[i]
-			if c.ID != uint16(s.ID()) {
-				t.Fatalf("Expected ID: 0x%04X, got 0x%04X", s.ID(), c.ID)
-			}
-
-			if c.Name != s.String() {
-				t.Fatalf("Expected Name: %s, got %s", s.String(), c.Name)
-			}
-
-			if len(c.SupportedVersions) != 1 {
-				t.Fatalf("Expected %d SupportedVersion, got %d", 1, len(c.SupportedVersions))
-			}
-
-			if c.SupportedVersions[0] != VersionDTLS12 {
-				t.Fatalf("Expected SupportedVersions 0x%04X, got 0x%04X", VersionDTLS12, c.SupportedVersions[0])
-			}
-
-			if c.Insecure {
-				t.Fatalf("Expected Insecure %t, got %t", false, c.Insecure)
-			}
-		})
-	}
-}
--- a/anylink/dtls-2.0.9/cipher_suite_test.go
+++ b/anylink/dtls-2.0.9/cipher_suite_test.go
@ -1,108 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2/internal/ciphersuite"
-	"github.com/pion/dtls/v2/internal/net/dpipe"
-	"github.com/pion/transport/test"
-)
-
-func TestCipherSuiteName(t *testing.T) {
-	testCases := []struct {
-		suite    CipherSuiteID
-		expected string
-	}{
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CCM, "TLS_ECDHE_ECDSA_WITH_AES_128_CCM"},
-		{CipherSuiteID(0x0000), "0x0000"},
-	}
-
-	for _, testCase := range testCases {
-		res := CipherSuiteName(testCase.suite)
-		if res != testCase.expected {
-			t.Fatalf("Expected: %s, got %s", testCase.expected, res)
-		}
-	}
-}
-
-func TestAllCipherSuites(t *testing.T) {
-	actual := len(allCipherSuites())
-	if actual == 0 {
-		t.Fatal()
-	}
-}
-
-// CustomCipher that is just used to assert Custom IDs work
-type testCustomCipherSuite struct {
-	ciphersuite.TLSEcdheEcdsaWithAes128GcmSha256
-	authenticationType CipherSuiteAuthenticationType
-}
-
-func (t *testCustomCipherSuite) ID() CipherSuiteID {
-	return 0xFFFF
-}
-
-func (t *testCustomCipherSuite) AuthenticationType() CipherSuiteAuthenticationType {
-	return t.authenticationType
-}
-
-// Assert that two connections that pass in a CipherSuite with a CustomID works
-func TestCustomCipherSuite(t *testing.T) {
-	type result struct {
-		c   *Conn
-		err error
-	}
-
-	// Check for leaking routines
-	report := test.CheckRoutines(t)
-	defer report()
-
-	runTest := func(cipherFactory func() []CipherSuite) {
-		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-		defer cancel()
-
-		ca, cb := dpipe.Pipe()
-		c := make(chan result)
-
-		go func() {
-			client, err := testClient(ctx, ca, &Config{
-				CipherSuites:       []CipherSuiteID{},
-				CustomCipherSuites: cipherFactory,
-			}, true)
-			c <- result{client, err}
-		}()
-
-		server, err := testServer(ctx, cb, &Config{
-			CipherSuites:       []CipherSuiteID{},
-			CustomCipherSuites: cipherFactory,
-		}, true)
-
-		clientResult := <-c
-
-		if err != nil {
-			t.Error(err)
-		} else {
-			_ = server.Close()
-		}
-
-		if clientResult.err != nil {
-			t.Error(clientResult.err)
-		} else {
-			_ = clientResult.c.Close()
-		}
-	}
-
-	t.Run("Custom ID", func(t *testing.T) {
-		runTest(func() []CipherSuite {
-			return []CipherSuite{&testCustomCipherSuite{authenticationType: CipherSuiteAuthenticationTypeCertificate}}
-		})
-	})
-
-	t.Run("Anonymous Cipher", func(t *testing.T) {
-		runTest(func() []CipherSuite {
-			return []CipherSuite{&testCustomCipherSuite{authenticationType: CipherSuiteAuthenticationTypeAnonymous}}
-		})
-	})
-}
--- a/anylink/dtls-2.0.9/codecov.yml
+++ b/anylink/dtls-2.0.9/codecov.yml
@ -1,20 +0,0 @@
-#
-# DO NOT EDIT THIS FILE
-#
-# It is automatically copied from https://github.com/pion/.goassets repository.
-#
-
-coverage:
-  status:
-    project:
-      default:
-        # Allow decreasing 2% of total coverage to avoid noise.
-        threshold: 2%
-    patch:
-      default:
-        target: 70%
-        only_pulls: true
-
-ignore:
-  - "examples/*"
-  - "examples/**/*"
--- a/anylink/dtls-2.0.9/compression_method.go
+++ b/anylink/dtls-2.0.9/compression_method.go
@ -1,9 +0,0 @@
-package dtls
-
-import "github.com/pion/dtls/v2/pkg/protocol"
-
-func defaultCompressionMethods() []*protocol.CompressionMethod {
-	return []*protocol.CompressionMethod{
-		{},
-	}
-}
--- a/anylink/dtls-2.0.9/config.go
+++ b/anylink/dtls-2.0.9/config.go
@ -1,197 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"io"
-	"time"
-
-	"github.com/pion/logging"
-)
-
-const keyLogLabelTLS12 = "CLIENT_RANDOM"
-
-// Config is used to configure a DTLS client or server.
-// After a Config is passed to a DTLS function it must not be modified.
-type Config struct {
-	// Certificates contains certificate chain to present to the other side of the connection.
-	// Server MUST set this if PSK is non-nil
-	// client SHOULD sets this so CertificateRequests can be handled if PSK is non-nil
-	Certificates []tls.Certificate
-
-	// CipherSuites is a list of supported cipher suites.
-	// If CipherSuites is nil, a default list is used
-	CipherSuites []CipherSuiteID
-
-	// CustomCipherSuites is a list of CipherSuites that can be
-	// provided by the user. This allow users to user Ciphers that are reserved
-	// for private usage.
-	CustomCipherSuites func() []CipherSuite
-
-	// SignatureSchemes contains the signature and hash schemes that the peer requests to verify.
-	SignatureSchemes []tls.SignatureScheme
-
-	// SRTPProtectionProfiles are the supported protection profiles
-	// Clients will send this via use_srtp and assert that the server properly responds
-	// Servers will assert that clients send one of these profiles and will respond as needed
-	SRTPProtectionProfiles []SRTPProtectionProfile
-
-	// ClientAuth determines the server's policy for
-	// TLS Client Authentication. The default is NoClientCert.
-	ClientAuth ClientAuthType
-
-	// RequireExtendedMasterSecret determines if the "Extended Master Secret" extension
-	// should be disabled, requested, or required (default requested).
-	ExtendedMasterSecret ExtendedMasterSecretType
-
-	// FlightInterval controls how often we send outbound handshake messages
-	// defaults to time.Second
-	FlightInterval time.Duration
-
-	// PSK sets the pre-shared key used by this DTLS connection
-	// If PSK is non-nil only PSK CipherSuites will be used
-	PSK             PSKCallback
-	PSKIdentityHint []byte
-
-	CiscoCompat PSKCallback // TODO add cisco anyconnect support
-
-	// InsecureSkipVerify controls whether a client verifies the
-	// server's certificate chain and host name.
-	// If InsecureSkipVerify is true, TLS accepts any certificate
-	// presented by the server and any host name in that certificate.
-	// In this mode, TLS is susceptible to man-in-the-middle attacks.
-	// This should be used only for testing.
-	InsecureSkipVerify bool
-
-	// InsecureHashes allows the use of hashing algorithms that are known
-	// to be vulnerable.
-	InsecureHashes bool
-
-	// VerifyPeerCertificate, if not nil, is called after normal
-	// certificate verification by either a client or server. It
-	// receives the certificate provided by the peer and also a flag
-	// that tells if normal verification has succeedded. If it returns a
-	// non-nil error, the handshake is aborted and that error results.
-	//
-	// If normal verification fails then the handshake will abort before
-	// considering this callback. If normal verification is disabled by
-	// setting InsecureSkipVerify, or (for a server) when ClientAuth is
-	// RequestClientCert or RequireAnyClientCert, then this callback will
-	// be considered but the verifiedChains will always be nil.
-	VerifyPeerCertificate func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error
-
-	// RootCAs defines the set of root certificate authorities
-	// that one peer uses when verifying the other peer's certificates.
-	// If RootCAs is nil, TLS uses the host's root CA set.
-	RootCAs *x509.CertPool
-
-	// ClientCAs defines the set of root certificate authorities
-	// that servers use if required to verify a client certificate
-	// by the policy in ClientAuth.
-	ClientCAs *x509.CertPool
-
-	// ServerName is used to verify the hostname on the returned
-	// certificates unless InsecureSkipVerify is given.
-	ServerName string
-
-	LoggerFactory logging.LoggerFactory
-
-	// ConnectContextMaker is a function to make a context used in Dial(),
-	// Client(), Server(), and Accept(). If nil, the default ConnectContextMaker
-	// is used. It can be implemented as following.
-	//
-	// 	func ConnectContextMaker() (context.Context, func()) {
-	// 		return context.WithTimeout(context.Background(), 30*time.Second)
-	// 	}
-	ConnectContextMaker func() (context.Context, func())
-
-	// MTU is the length at which handshake messages will be fragmented to
-	// fit within the maximum transmission unit (default is 1200 bytes)
-	MTU int
-
-	// ReplayProtectionWindow is the size of the replay attack protection window.
-	// Duplication of the sequence number is checked in this window size.
-	// Packet with sequence number older than this value compared to the latest
-	// accepted packet will be discarded. (default is 64)
-	ReplayProtectionWindow int
-
-	// KeyLogWriter optionally specifies a destination for TLS master secrets
-	// in NSS key log format that can be used to allow external programs
-	// such as Wireshark to decrypt TLS connections.
-	// See https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/Key_Log_Format.
-	// Use of KeyLogWriter compromises security and should only be
-	// used for debugging.
-	KeyLogWriter io.Writer
-}
-
-func defaultConnectContextMaker() (context.Context, func()) {
-	return context.WithTimeout(context.Background(), 30*time.Second)
-}
-
-func (c *Config) connectContextMaker() (context.Context, func()) {
-	if c.ConnectContextMaker == nil {
-		return defaultConnectContextMaker()
-	}
-	return c.ConnectContextMaker()
-}
-
-const defaultMTU = 1200 // bytes
-
-// PSKCallback is called once we have the remote's PSKIdentityHint.
-// If the remote provided none it will be nil
-type PSKCallback func([]byte) ([]byte, error)
-
-// ClientAuthType declares the policy the server will follow for
-// TLS Client Authentication.
-type ClientAuthType int
-
-// ClientAuthType enums
-const (
-	NoClientCert ClientAuthType = iota
-	RequestClientCert
-	RequireAnyClientCert
-	VerifyClientCertIfGiven
-	RequireAndVerifyClientCert
-)
-
-// ExtendedMasterSecretType declares the policy the client and server
-// will follow for the Extended Master Secret extension
-type ExtendedMasterSecretType int
-
-// ExtendedMasterSecretType enums
-const (
-	RequestExtendedMasterSecret ExtendedMasterSecretType = iota
-	RequireExtendedMasterSecret
-	DisableExtendedMasterSecret
-)
-
-func validateConfig(config *Config) error {
-	switch {
-	case config == nil:
-		return errNoConfigProvided
-	case config.PSKIdentityHint != nil && config.PSK == nil:
-		return errIdentityNoPSK
-	}
-
-	for _, cert := range config.Certificates {
-		if cert.Certificate == nil {
-			return errInvalidCertificate
-		}
-		if cert.PrivateKey != nil {
-			switch cert.PrivateKey.(type) {
-			case ed25519.PrivateKey:
-			case *ecdsa.PrivateKey:
-			case *rsa.PrivateKey:
-			default:
-				return errInvalidPrivateKey
-			}
-		}
-	}
-
-	_, err := parseCipherSuites(config.CipherSuites, config.CustomCipherSuites, config.PSK == nil || len(config.Certificates) > 0, config.PSK != nil)
-	return err
-}
--- a/anylink/dtls-2.0.9/config_test.go
+++ b/anylink/dtls-2.0.9/config_test.go
@ -1,119 +0,0 @@
-package dtls
-
-import (
-	"crypto/dsa" //nolint
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/tls"
-	"errors"
-	"testing"
-
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-)
-
-func TestValidateConfig(t *testing.T) {
-	// Empty config
-	if err := validateConfig(nil); !errors.Is(err, errNoConfigProvided) {
-		t.Fatalf("TestValidateConfig: Config validation error exp(%v) failed(%v)", errNoConfigProvided, err)
-	}
-
-	// PSK and Certificate, valid cipher suites
-	cert, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatalf("TestValidateConfig: Config validation error(%v), self signed certificate not generated", err)
-		return
-	}
-	config := &Config{
-		CipherSuites: []CipherSuiteID{TLS_PSK_WITH_AES_128_CCM_8, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		PSK: func(hint []byte) ([]byte, error) {
-			return nil, nil
-		},
-		Certificates: []tls.Certificate{cert},
-	}
-	if err = validateConfig(config); err != nil {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", nil, err)
-	}
-
-	// PSK and Certificate, no PSK cipher suite
-	config = &Config{
-		CipherSuites: []CipherSuiteID{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		PSK: func(hint []byte) ([]byte, error) {
-			return nil, nil
-		},
-		Certificates: []tls.Certificate{cert},
-	}
-	if err = validateConfig(config); !errors.Is(errNoAvailablePSKCipherSuite, err) {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", errNoAvailablePSKCipherSuite, err)
-	}
-
-	// PSK and Certificate, no non-PSK cipher suite
-	config = &Config{
-		CipherSuites: []CipherSuiteID{TLS_PSK_WITH_AES_128_CCM_8},
-		PSK: func(hint []byte) ([]byte, error) {
-			return nil, nil
-		},
-		Certificates: []tls.Certificate{cert},
-	}
-	if err = validateConfig(config); !errors.Is(errNoAvailableCertificateCipherSuite, err) {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", errNoAvailableCertificateCipherSuite, err)
-	}
-
-	// PSK identity hint with not PSK
-	config = &Config{
-		CipherSuites:    []CipherSuiteID{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		PSK:             nil,
-		PSKIdentityHint: []byte{},
-	}
-	if err = validateConfig(config); !errors.Is(err, errIdentityNoPSK) {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", errIdentityNoPSK, err)
-	}
-
-	// Invalid private key
-	dsaPrivateKey := &dsa.PrivateKey{}
-	err = dsa.GenerateParameters(&dsaPrivateKey.Parameters, rand.Reader, dsa.L1024N160)
-	if err != nil {
-		t.Fatalf("TestValidateConfig: Config validation error(%v), DSA parameters not generated", err)
-		return
-	}
-	err = dsa.GenerateKey(dsaPrivateKey, rand.Reader)
-	if err != nil {
-		t.Fatalf("TestValidateConfig: Config validation error(%v), DSA private key not generated", err)
-		return
-	}
-	config = &Config{
-		CipherSuites: []CipherSuiteID{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		Certificates: []tls.Certificate{{Certificate: cert.Certificate, PrivateKey: dsaPrivateKey}},
-	}
-	if err = validateConfig(config); !errors.Is(err, errInvalidPrivateKey) {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", errInvalidPrivateKey, err)
-	}
-
-	// PrivateKey without Certificate
-	config = &Config{
-		CipherSuites: []CipherSuiteID{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		Certificates: []tls.Certificate{{PrivateKey: cert.PrivateKey}},
-	}
-	if err = validateConfig(config); !errors.Is(err, errInvalidCertificate) {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", errInvalidCertificate, err)
-	}
-
-	// Invalid cipher suites
-	config = &Config{CipherSuites: []CipherSuiteID{0x0000}}
-	if err = validateConfig(config); err == nil {
-		t.Fatal("TestValidateConfig: Client error expected with invalid CipherSuiteID")
-	}
-
-	// Valid config
-	rsaPrivateKey, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		t.Fatalf("TestValidateConfig: Config validation error(%v), RSA private key not generated", err)
-		return
-	}
-	config = &Config{
-		CipherSuites: []CipherSuiteID{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-		Certificates: []tls.Certificate{cert, {Certificate: cert.Certificate, PrivateKey: rsaPrivateKey}},
-	}
-	if err = validateConfig(config); err != nil {
-		t.Fatalf("TestValidateConfig: Client error exp(%v) failed(%v)", nil, err)
-	}
-}
--- a/anylink/dtls-2.0.9/conn.go
+++ b/anylink/dtls-2.0.9/conn.go
@ -1,979 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/pion/dtls/v2/internal/closer"
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/crypto/signaturehash"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-	"github.com/pion/logging"
-	"github.com/pion/transport/connctx"
-	"github.com/pion/transport/deadline"
-	"github.com/pion/transport/replaydetector"
-)
-
-const (
-	initialTickerInterval = time.Second
-	cookieLength          = 20
-	defaultNamedCurve     = elliptic.X25519
-	inboundBufferSize     = 8192
-	// Default replay protection window is specified by RFC 6347 Section 4.1.2.6
-	defaultReplayProtectionWindow = 64
-)
-
-func invalidKeyingLabels() map[string]bool {
-	return map[string]bool{
-		"client finished": true,
-		"server finished": true,
-		"master secret":   true,
-		"key expansion":   true,
-	}
-}
-
-// Conn represents a DTLS connection
-type Conn struct {
-	lock           sync.RWMutex     // Internal lock (must not be public)
-	nextConn       connctx.ConnCtx  // Embedded Conn, typically a udpconn we read/write from
-	fragmentBuffer *fragmentBuffer  // out-of-order and missing fragment handling
-	handshakeCache *handshakeCache  // caching of handshake messages for verifyData generation
-	decrypted      chan interface{} // Decrypted Application Data or error, pull by calling `Read`
-
-	state State // Internal state
-
-	maximumTransmissionUnit int
-
-	handshakeCompletedSuccessfully atomic.Value
-
-	encryptedPackets [][]byte
-
-	connectionClosedByUser bool
-	closeLock              sync.Mutex
-	closed                 *closer.Closer
-	handshakeLoopsFinished sync.WaitGroup
-
-	readDeadline  *deadline.Deadline
-	writeDeadline *deadline.Deadline
-
-	log logging.LeveledLogger
-
-	reading               chan struct{}
-	handshakeRecv         chan chan struct{}
-	cancelHandshaker      func()
-	cancelHandshakeReader func()
-
-	fsm *handshakeFSM
-
-	replayProtectionWindow uint
-}
-
-func createConn(ctx context.Context, nextConn net.Conn, config *Config, isClient bool, initialState *State) (*Conn, error) {
-	err := validateConfig(config)
-	if err != nil {
-		return nil, err
-	}
-
-	if nextConn == nil {
-		return nil, errNilNextConn
-	}
-
-	cipherSuites, err := parseCipherSuites(config.CipherSuites, config.CustomCipherSuites, config.PSK == nil || len(config.Certificates) > 0, config.PSK != nil)
-	if err != nil {
-		return nil, err
-	}
-
-	signatureSchemes, err := signaturehash.ParseSignatureSchemes(config.SignatureSchemes, config.InsecureHashes)
-	if err != nil {
-		return nil, err
-	}
-
-	workerInterval := initialTickerInterval
-	if config.FlightInterval != 0 {
-		workerInterval = config.FlightInterval
-	}
-
-	loggerFactory := config.LoggerFactory
-	if loggerFactory == nil {
-		loggerFactory = logging.NewDefaultLoggerFactory()
-	}
-
-	logger := loggerFactory.NewLogger("dtls")
-
-	mtu := config.MTU
-	if mtu <= 0 {
-		mtu = defaultMTU
-	}
-
-	replayProtectionWindow := config.ReplayProtectionWindow
-	if replayProtectionWindow <= 0 {
-		replayProtectionWindow = defaultReplayProtectionWindow
-	}
-
-	c := &Conn{
-		nextConn:                connctx.New(nextConn),
-		fragmentBuffer:          newFragmentBuffer(),
-		handshakeCache:          newHandshakeCache(),
-		maximumTransmissionUnit: mtu,
-
-		decrypted: make(chan interface{}, 1),
-		log:       logger,
-
-		readDeadline:  deadline.New(),
-		writeDeadline: deadline.New(),
-
-		reading:          make(chan struct{}, 1),
-		handshakeRecv:    make(chan chan struct{}),
-		closed:           closer.NewCloser(),
-		cancelHandshaker: func() {},
-
-		replayProtectionWindow: uint(replayProtectionWindow),
-
-		state: State{
-			isClient: isClient,
-		},
-	}
-
-	c.setRemoteEpoch(0)
-	c.setLocalEpoch(0)
-
-	serverName := config.ServerName
-	// Use host from conn address when serverName is not provided
-	if isClient && serverName == "" && nextConn.RemoteAddr() != nil {
-		remoteAddr := nextConn.RemoteAddr().String()
-		var host string
-		host, _, err = net.SplitHostPort(remoteAddr)
-		if err != nil {
-			serverName = remoteAddr
-		} else {
-			serverName = host
-		}
-	}
-
-	hsCfg := &handshakeConfig{
-		localPSKCallback:            config.PSK,
-		localPSKIdentityHint:        config.PSKIdentityHint,
-		localCiscoCompatCallback:    config.CiscoCompat,
-		localCipherSuites:           cipherSuites,
-		localSignatureSchemes:       signatureSchemes,
-		extendedMasterSecret:        config.ExtendedMasterSecret,
-		localSRTPProtectionProfiles: config.SRTPProtectionProfiles,
-		serverName:                  serverName,
-		clientAuth:                  config.ClientAuth,
-		localCertificates:           config.Certificates,
-		insecureSkipVerify:          config.InsecureSkipVerify,
-		verifyPeerCertificate:       config.VerifyPeerCertificate,
-		rootCAs:                     config.RootCAs,
-		clientCAs:                   config.ClientCAs,
-		customCipherSuites:          config.CustomCipherSuites,
-		retransmitInterval:          workerInterval,
-		log:                         logger,
-		initialEpoch:                0,
-		keyLogWriter:                config.KeyLogWriter,
-	}
-
-	var initialFlight flightVal
-	var initialFSMState handshakeState
-
-	if initialState != nil {
-		if c.state.isClient {
-			initialFlight = flight5
-		} else {
-			initialFlight = flight6
-		}
-		initialFSMState = handshakeFinished
-
-		c.state = *initialState
-	} else {
-		if c.state.isClient {
-			initialFlight = flight1
-		} else {
-			initialFlight = flight0
-		}
-		initialFSMState = handshakePreparing
-	}
-	// Do handshake
-	if err := c.handshake(ctx, hsCfg, initialFlight, initialFSMState); err != nil {
-		return nil, err
-	}
-
-	c.log.Trace("Handshake Completed")
-
-	return c, nil
-}
-
-// Dial connects to the given network address and establishes a DTLS connection on top.
-// Connection handshake will timeout using ConnectContextMaker in the Config.
-// If you want to specify the timeout duration, use DialWithContext() instead.
-func Dial(network string, raddr *net.UDPAddr, config *Config) (*Conn, error) {
-	ctx, cancel := config.connectContextMaker()
-	defer cancel()
-
-	return DialWithContext(ctx, network, raddr, config)
-}
-
-// Client establishes a DTLS connection over an existing connection.
-// Connection handshake will timeout using ConnectContextMaker in the Config.
-// If you want to specify the timeout duration, use ClientWithContext() instead.
-func Client(conn net.Conn, config *Config) (*Conn, error) {
-	ctx, cancel := config.connectContextMaker()
-	defer cancel()
-
-	return ClientWithContext(ctx, conn, config)
-}
-
-// Server listens for incoming DTLS connections.
-// Connection handshake will timeout using ConnectContextMaker in the Config.
-// If you want to specify the timeout duration, use ServerWithContext() instead.
-func Server(conn net.Conn, config *Config) (*Conn, error) {
-	ctx, cancel := config.connectContextMaker()
-	defer cancel()
-
-	return ServerWithContext(ctx, conn, config)
-}
-
-// DialWithContext connects to the given network address and establishes a DTLS connection on top.
-func DialWithContext(ctx context.Context, network string, raddr *net.UDPAddr, config *Config) (*Conn, error) {
-	pConn, err := net.DialUDP(network, nil, raddr)
-	if err != nil {
-		return nil, err
-	}
-	return ClientWithContext(ctx, pConn, config)
-}
-
-// ClientWithContext establishes a DTLS connection over an existing connection.
-func ClientWithContext(ctx context.Context, conn net.Conn, config *Config) (*Conn, error) {
-	switch {
-	case config == nil:
-		return nil, errNoConfigProvided
-	case config.PSK != nil && config.PSKIdentityHint == nil:
-		return nil, errPSKAndIdentityMustBeSetForClient
-	}
-
-	return createConn(ctx, conn, config, true, nil)
-}
-
-// ServerWithContext listens for incoming DTLS connections.
-func ServerWithContext(ctx context.Context, conn net.Conn, config *Config) (*Conn, error) {
-	if config == nil {
-		return nil, errNoConfigProvided
-	}
-
-	return createConn(ctx, conn, config, false, nil)
-}
-
-// Read reads data from the connection.
-func (c *Conn) Read(p []byte) (n int, err error) {
-	if !c.isHandshakeCompletedSuccessfully() {
-		return 0, errHandshakeInProgress
-	}
-
-	select {
-	case <-c.readDeadline.Done():
-		return 0, errDeadlineExceeded
-	default:
-	}
-
-	for {
-		select {
-		case <-c.readDeadline.Done():
-			return 0, errDeadlineExceeded
-		case out, ok := <-c.decrypted:
-			if !ok {
-				return 0, io.EOF
-			}
-			switch val := out.(type) {
-			case ([]byte):
-				if len(p) < len(val) {
-					return 0, errBufferTooSmall
-				}
-				copy(p, val)
-				return len(val), nil
-			case (error):
-				return 0, val
-			}
-		}
-	}
-}
-
-// Write writes len(p) bytes from p to the DTLS connection
-func (c *Conn) Write(p []byte) (int, error) {
-	if c.isConnectionClosed() {
-		return 0, ErrConnClosed
-	}
-
-	select {
-	case <-c.writeDeadline.Done():
-		return 0, errDeadlineExceeded
-	default:
-	}
-
-	if !c.isHandshakeCompletedSuccessfully() {
-		return 0, errHandshakeInProgress
-	}
-
-	return len(p), c.writePackets(c.writeDeadline, []*packet{
-		{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Epoch:   c.getLocalEpoch(),
-					Version: protocol.Version1_2,
-				},
-				Content: &protocol.ApplicationData{
-					Data: p,
-				},
-			},
-			shouldEncrypt: true,
-		},
-	})
-}
-
-// Close closes the connection.
-func (c *Conn) Close() error {
-	err := c.close(true)
-	c.handshakeLoopsFinished.Wait()
-	return err
-}
-
-// ConnectionState returns basic DTLS details about the connection.
-// Note that this replaced the `Export` function of v1.
-func (c *Conn) ConnectionState() State {
-	c.lock.RLock()
-	defer c.lock.RUnlock()
-	return *c.state.clone()
-}
-
-// SelectedSRTPProtectionProfile returns the selected SRTPProtectionProfile
-func (c *Conn) SelectedSRTPProtectionProfile() (SRTPProtectionProfile, bool) {
-	c.lock.RLock()
-	defer c.lock.RUnlock()
-
-	if c.state.srtpProtectionProfile == 0 {
-		return 0, false
-	}
-
-	return c.state.srtpProtectionProfile, true
-}
-
-func (c *Conn) writePackets(ctx context.Context, pkts []*packet) error {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	var rawPackets [][]byte
-
-	for _, p := range pkts {
-		if h, ok := p.record.Content.(*handshake.Handshake); ok {
-			handshakeRaw, err := p.record.Marshal()
-			if err != nil {
-				return err
-			}
-
-			c.log.Tracef("[handshake:%v] -> %s (epoch: %d, seq: %d)",
-				srvCliStr(c.state.isClient), h.Header.Type.String(),
-				p.record.Header.Epoch, h.Header.MessageSequence)
-			c.handshakeCache.push(handshakeRaw[recordlayer.HeaderSize:], p.record.Header.Epoch, h.Header.MessageSequence, h.Header.Type, c.state.isClient)
-
-			rawHandshakePackets, err := c.processHandshakePacket(p, h)
-			if err != nil {
-				return err
-			}
-			rawPackets = append(rawPackets, rawHandshakePackets...)
-		} else {
-			rawPacket, err := c.processPacket(p)
-			if err != nil {
-				return err
-			}
-			rawPackets = append(rawPackets, rawPacket)
-		}
-	}
-	if len(rawPackets) == 0 {
-		return nil
-	}
-	compactedRawPackets := c.compactRawPackets(rawPackets)
-
-	for _, compactedRawPackets := range compactedRawPackets {
-		if _, err := c.nextConn.WriteContext(ctx, compactedRawPackets); err != nil {
-			return netError(err)
-		}
-	}
-
-	return nil
-}
-
-func (c *Conn) compactRawPackets(rawPackets [][]byte) [][]byte {
-	combinedRawPackets := make([][]byte, 0)
-	currentCombinedRawPacket := make([]byte, 0)
-
-	for _, rawPacket := range rawPackets {
-		if len(currentCombinedRawPacket) > 0 && len(currentCombinedRawPacket)+len(rawPacket) >= c.maximumTransmissionUnit {
-			combinedRawPackets = append(combinedRawPackets, currentCombinedRawPacket)
-			currentCombinedRawPacket = []byte{}
-		}
-		currentCombinedRawPacket = append(currentCombinedRawPacket, rawPacket...)
-	}
-
-	combinedRawPackets = append(combinedRawPackets, currentCombinedRawPacket)
-
-	return combinedRawPackets
-}
-
-func (c *Conn) processPacket(p *packet) ([]byte, error) {
-	epoch := p.record.Header.Epoch
-	for len(c.state.localSequenceNumber) <= int(epoch) {
-		c.state.localSequenceNumber = append(c.state.localSequenceNumber, uint64(0))
-	}
-	seq := atomic.AddUint64(&c.state.localSequenceNumber[epoch], 1) - 1
-	if seq > recordlayer.MaxSequenceNumber {
-		// RFC 6347 Section 4.1.0
-		// The implementation must either abandon an association or rehandshake
-		// prior to allowing the sequence number to wrap.
-		return nil, errSequenceNumberOverflow
-	}
-	p.record.Header.SequenceNumber = seq
-
-	rawPacket, err := p.record.Marshal()
-	if err != nil {
-		return nil, err
-	}
-
-	if p.shouldEncrypt {
-		var err error
-		rawPacket, err = c.state.cipherSuite.Encrypt(p.record, rawPacket)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return rawPacket, nil
-}
-
-func (c *Conn) processHandshakePacket(p *packet, h *handshake.Handshake) ([][]byte, error) {
-	rawPackets := make([][]byte, 0)
-
-	handshakeFragments, err := c.fragmentHandshake(h)
-	if err != nil {
-		return nil, err
-	}
-	epoch := p.record.Header.Epoch
-	for len(c.state.localSequenceNumber) <= int(epoch) {
-		c.state.localSequenceNumber = append(c.state.localSequenceNumber, uint64(0))
-	}
-
-	for _, handshakeFragment := range handshakeFragments {
-		seq := atomic.AddUint64(&c.state.localSequenceNumber[epoch], 1) - 1
-		if seq > recordlayer.MaxSequenceNumber {
-			return nil, errSequenceNumberOverflow
-		}
-
-		recordlayerHeader := &recordlayer.Header{
-			Version:        p.record.Header.Version,
-			ContentType:    p.record.Header.ContentType,
-			ContentLen:     uint16(len(handshakeFragment)),
-			Epoch:          p.record.Header.Epoch,
-			SequenceNumber: seq,
-		}
-
-		recordlayerHeaderBytes, err := recordlayerHeader.Marshal()
-		if err != nil {
-			return nil, err
-		}
-
-		p.record.Header = *recordlayerHeader
-
-		rawPacket := append(recordlayerHeaderBytes, handshakeFragment...)
-		if p.shouldEncrypt {
-			var err error
-			rawPacket, err = c.state.cipherSuite.Encrypt(p.record, rawPacket)
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		rawPackets = append(rawPackets, rawPacket)
-	}
-
-	return rawPackets, nil
-}
-
-func (c *Conn) fragmentHandshake(h *handshake.Handshake) ([][]byte, error) {
-	content, err := h.Message.Marshal()
-	if err != nil {
-		return nil, err
-	}
-
-	fragmentedHandshakes := make([][]byte, 0)
-
-	contentFragments := splitBytes(content, c.maximumTransmissionUnit)
-	if len(contentFragments) == 0 {
-		contentFragments = [][]byte{
-			{},
-		}
-	}
-
-	offset := 0
-	for _, contentFragment := range contentFragments {
-		contentFragmentLen := len(contentFragment)
-
-		headerFragment := &handshake.Header{
-			Type:            h.Header.Type,
-			Length:          h.Header.Length,
-			MessageSequence: h.Header.MessageSequence,
-			FragmentOffset:  uint32(offset),
-			FragmentLength:  uint32(contentFragmentLen),
-		}
-
-		offset += contentFragmentLen
-
-		headerFragmentRaw, err := headerFragment.Marshal()
-		if err != nil {
-			return nil, err
-		}
-
-		fragmentedHandshake := append(headerFragmentRaw, contentFragment...)
-		fragmentedHandshakes = append(fragmentedHandshakes, fragmentedHandshake)
-	}
-
-	return fragmentedHandshakes, nil
-}
-
-var poolReadBuffer = sync.Pool{ //nolint:gochecknoglobals
-	New: func() interface{} {
-		b := make([]byte, inboundBufferSize)
-		return &b
-	},
-}
-
-func (c *Conn) readAndBuffer(ctx context.Context) error {
-	bufptr := poolReadBuffer.Get().(*[]byte)
-	defer poolReadBuffer.Put(bufptr)
-
-	b := *bufptr
-	i, err := c.nextConn.ReadContext(ctx, b)
-	if err != nil {
-		return netError(err)
-	}
-
-	pkts, err := recordlayer.UnpackDatagram(b[:i])
-	if err != nil {
-		return err
-	}
-
-	var hasHandshake bool
-	for _, p := range pkts {
-		hs, alert, err := c.handleIncomingPacket(p, true)
-		if alert != nil {
-			if alertErr := c.notify(ctx, alert.Level, alert.Description); alertErr != nil {
-				if err == nil {
-					err = alertErr
-				}
-			}
-		}
-		if hs {
-			hasHandshake = true
-		}
-		switch e := err.(type) {
-		case nil:
-		case *errAlert:
-			if e.IsFatalOrCloseNotify() {
-				return e
-			}
-		default:
-			return e
-		}
-	}
-	if hasHandshake {
-		done := make(chan struct{})
-		select {
-		case c.handshakeRecv <- done:
-			// If the other party may retransmit the flight,
-			// we should respond even if it not a new message.
-			<-done
-		case <-c.fsm.Done():
-		}
-	}
-	return nil
-}
-
-func (c *Conn) handleQueuedPackets(ctx context.Context) error {
-	pkts := c.encryptedPackets
-	c.encryptedPackets = nil
-
-	for _, p := range pkts {
-		_, alert, err := c.handleIncomingPacket(p, false) // don't re-enqueue
-		if alert != nil {
-			if alertErr := c.notify(ctx, alert.Level, alert.Description); alertErr != nil {
-				if err == nil {
-					err = alertErr
-				}
-			}
-		}
-		switch e := err.(type) {
-		case nil:
-		case *errAlert:
-			if e.IsFatalOrCloseNotify() {
-				return e
-			}
-		default:
-			return e
-		}
-	}
-	return nil
-}
-
-func (c *Conn) handleIncomingPacket(buf []byte, enqueue bool) (bool, *alert.Alert, error) { //nolint:gocognit
-	h := &recordlayer.Header{}
-	if err := h.Unmarshal(buf); err != nil {
-		// Decode error must be silently discarded
-		// [RFC6347 Section-4.1.2.7]
-		c.log.Debugf("discarded broken packet: %v", err)
-		return false, nil, nil
-	}
-
-	// Validate epoch
-	remoteEpoch := c.getRemoteEpoch()
-	if h.Epoch > remoteEpoch {
-		if h.Epoch > remoteEpoch+1 {
-			c.log.Debugf("discarded future packet (epoch: %d, seq: %d)",
-				h.Epoch, h.SequenceNumber,
-			)
-			return false, nil, nil
-		}
-		if enqueue {
-			c.log.Debug("received packet of next epoch, queuing packet")
-			c.encryptedPackets = append(c.encryptedPackets, buf)
-		}
-		return false, nil, nil
-	}
-
-	// Anti-replay protection
-	for len(c.state.replayDetector) <= int(h.Epoch) {
-		c.state.replayDetector = append(c.state.replayDetector,
-			replaydetector.New(c.replayProtectionWindow, recordlayer.MaxSequenceNumber),
-		)
-	}
-	markPacketAsValid, ok := c.state.replayDetector[int(h.Epoch)].Check(h.SequenceNumber)
-	if !ok {
-		c.log.Debugf("discarded duplicated packet (epoch: %d, seq: %d)",
-			h.Epoch, h.SequenceNumber,
-		)
-		return false, nil, nil
-	}
-
-	// Decrypt
-	if h.Epoch != 0 {
-		if c.state.cipherSuite == nil || !c.state.cipherSuite.IsInitialized() {
-			if enqueue {
-				c.encryptedPackets = append(c.encryptedPackets, buf)
-				c.log.Debug("handshake not finished, queuing packet")
-			}
-			return false, nil, nil
-		}
-
-		var err error
-		buf, err = c.state.cipherSuite.Decrypt(buf)
-		if err != nil {
-			c.log.Debugf("%s: decrypt failed: %s", srvCliStr(c.state.isClient), err)
-			return false, nil, nil
-		}
-	}
-
-	isHandshake, err := c.fragmentBuffer.push(append([]byte{}, buf...))
-	if err != nil {
-		// Decode error must be silently discarded
-		// [RFC6347 Section-4.1.2.7]
-		c.log.Debugf("defragment failed: %s", err)
-		return false, nil, nil
-	} else if isHandshake {
-		markPacketAsValid()
-		for out, epoch := c.fragmentBuffer.pop(); out != nil; out, epoch = c.fragmentBuffer.pop() {
-			rawHandshake := &handshake.Handshake{}
-			if err := rawHandshake.Unmarshal(out); err != nil {
-				c.log.Debugf("%s: handshake parse failed: %s", srvCliStr(c.state.isClient), err)
-				continue
-			}
-
-			_ = c.handshakeCache.push(out, epoch, rawHandshake.Header.MessageSequence, rawHandshake.Header.Type, !c.state.isClient)
-		}
-
-		return true, nil, nil
-	}
-
-	r := &recordlayer.RecordLayer{}
-	if err := r.Unmarshal(buf); err != nil {
-		return false, &alert.Alert{Level: alert.Fatal, Description: alert.DecodeError}, err
-	}
-
-	switch content := r.Content.(type) {
-	case *alert.Alert:
-		c.log.Tracef("%s: <- %s", srvCliStr(c.state.isClient), content.String())
-		var a *alert.Alert
-		if content.Description == alert.CloseNotify {
-			// Respond with a close_notify [RFC5246 Section 7.2.1]
-			a = &alert.Alert{Level: alert.Warning, Description: alert.CloseNotify}
-		}
-		markPacketAsValid()
-		return false, a, &errAlert{content}
-	case *protocol.ChangeCipherSpec:
-		if c.state.cipherSuite == nil || !c.state.cipherSuite.IsInitialized() {
-			if enqueue {
-				c.encryptedPackets = append(c.encryptedPackets, buf)
-				c.log.Debugf("CipherSuite not initialized, queuing packet")
-			}
-			return false, nil, nil
-		}
-
-		newRemoteEpoch := h.Epoch + 1
-		c.log.Tracef("%s: <- ChangeCipherSpec (epoch: %d)", srvCliStr(c.state.isClient), newRemoteEpoch)
-
-		if c.getRemoteEpoch()+1 == newRemoteEpoch {
-			c.setRemoteEpoch(newRemoteEpoch)
-			markPacketAsValid()
-		}
-	case *protocol.ApplicationData:
-		if h.Epoch == 0 {
-			return false, &alert.Alert{Level: alert.Fatal, Description: alert.UnexpectedMessage}, errApplicationDataEpochZero
-		}
-
-		markPacketAsValid()
-
-		select {
-		case c.decrypted <- content.Data:
-		case <-c.closed.Done():
-		}
-
-	default:
-		return false, &alert.Alert{Level: alert.Fatal, Description: alert.UnexpectedMessage}, fmt.Errorf("%w: %d", errUnhandledContextType, content.ContentType())
-	}
-	return false, nil, nil
-}
-
-func (c *Conn) recvHandshake() <-chan chan struct{} {
-	return c.handshakeRecv
-}
-
-func (c *Conn) notify(ctx context.Context, level alert.Level, desc alert.Description) error {
-	return c.writePackets(ctx, []*packet{
-		{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Epoch:   c.getLocalEpoch(),
-					Version: protocol.Version1_2,
-				},
-				Content: &alert.Alert{
-					Level:       level,
-					Description: desc,
-				},
-			},
-			shouldEncrypt: c.isHandshakeCompletedSuccessfully(),
-		},
-	})
-}
-
-func (c *Conn) setHandshakeCompletedSuccessfully() {
-	c.handshakeCompletedSuccessfully.Store(struct{ bool }{true})
-}
-
-func (c *Conn) isHandshakeCompletedSuccessfully() bool {
-	boolean, _ := c.handshakeCompletedSuccessfully.Load().(struct{ bool })
-	return boolean.bool
-}
-
-func (c *Conn) handshake(ctx context.Context, cfg *handshakeConfig, initialFlight flightVal, initialState handshakeState) error { //nolint:gocognit
-	c.fsm = newHandshakeFSM(&c.state, c.handshakeCache, cfg, initialFlight)
-
-	done := make(chan struct{})
-	ctxRead, cancelRead := context.WithCancel(context.Background())
-	c.cancelHandshakeReader = cancelRead
-	cfg.onFlightState = func(f flightVal, s handshakeState) {
-		if s == handshakeFinished && !c.isHandshakeCompletedSuccessfully() {
-			c.setHandshakeCompletedSuccessfully()
-			close(done)
-		}
-	}
-
-	ctxHs, cancel := context.WithCancel(context.Background())
-	c.cancelHandshaker = cancel
-
-	firstErr := make(chan error, 1)
-
-	c.handshakeLoopsFinished.Add(2)
-
-	// Handshake routine should be live until close.
-	// The other party may request retransmission of the last flight to cope with packet drop.
-	go func() {
-		defer c.handshakeLoopsFinished.Done()
-		err := c.fsm.Run(ctxHs, c, initialState)
-		if !errors.Is(err, context.Canceled) {
-			select {
-			case firstErr <- err:
-			default:
-			}
-		}
-	}()
-	go func() {
-		defer func() {
-			// Escaping read loop.
-			// It's safe to close decrypted channnel now.
-			close(c.decrypted)
-
-			// Force stop handshaker when the underlying connection is closed.
-			cancel()
-		}()
-		defer c.handshakeLoopsFinished.Done()
-		for {
-			if err := c.readAndBuffer(ctxRead); err != nil {
-				switch e := err.(type) {
-				case *errAlert:
-					if !e.IsFatalOrCloseNotify() {
-						if c.isHandshakeCompletedSuccessfully() {
-							// Pass the error to Read()
-							select {
-							case c.decrypted <- err:
-							case <-c.closed.Done():
-							}
-						}
-						continue // non-fatal alert must not stop read loop
-					}
-				case error:
-					switch err {
-					case context.DeadlineExceeded, context.Canceled, io.EOF:
-					default:
-						if c.isHandshakeCompletedSuccessfully() {
-							// Keep read loop and pass the read error to Read()
-							select {
-							case c.decrypted <- err:
-							case <-c.closed.Done():
-							}
-							continue // non-fatal alert must not stop read loop
-						}
-					}
-				}
-				select {
-				case firstErr <- err:
-				default:
-				}
-
-				if e, ok := err.(*errAlert); ok {
-					if e.IsFatalOrCloseNotify() {
-						_ = c.close(false)
-					}
-				}
-				return
-			}
-		}
-	}()
-
-	select {
-	case err := <-firstErr:
-		cancelRead()
-		cancel()
-		return c.translateHandshakeCtxError(err)
-	case <-ctx.Done():
-		cancelRead()
-		cancel()
-		return c.translateHandshakeCtxError(ctx.Err())
-	case <-done:
-		return nil
-	}
-}
-
-func (c *Conn) translateHandshakeCtxError(err error) error {
-	if err == nil {
-		return nil
-	}
-	if errors.Is(err, context.Canceled) && c.isHandshakeCompletedSuccessfully() {
-		return nil
-	}
-	return &HandshakeError{Err: err}
-}
-
-func (c *Conn) close(byUser bool) error {
-	c.cancelHandshaker()
-	c.cancelHandshakeReader()
-
-	if c.isHandshakeCompletedSuccessfully() && byUser {
-		// Discard error from notify() to return non-error on the first user call of Close()
-		// even if the underlying connection is already closed.
-		_ = c.notify(context.Background(), alert.Warning, alert.CloseNotify)
-	}
-
-	c.closeLock.Lock()
-	// Don't return ErrConnClosed at the first time of the call from user.
-	closedByUser := c.connectionClosedByUser
-	if byUser {
-		c.connectionClosedByUser = true
-	}
-	c.closed.Close()
-	c.closeLock.Unlock()
-
-	if closedByUser {
-		return ErrConnClosed
-	}
-
-	return c.nextConn.Close()
-}
-
-func (c *Conn) isConnectionClosed() bool {
-	select {
-	case <-c.closed.Done():
-		return true
-	default:
-		return false
-	}
-}
-
-func (c *Conn) setLocalEpoch(epoch uint16) {
-	c.state.localEpoch.Store(epoch)
-}
-
-func (c *Conn) getLocalEpoch() uint16 {
-	return c.state.localEpoch.Load().(uint16)
-}
-
-func (c *Conn) setRemoteEpoch(epoch uint16) {
-	c.state.remoteEpoch.Store(epoch)
-}
-
-func (c *Conn) getRemoteEpoch() uint16 {
-	return c.state.remoteEpoch.Load().(uint16)
-}
-
-// LocalAddr implements net.Conn.LocalAddr
-func (c *Conn) LocalAddr() net.Addr {
-	return c.nextConn.LocalAddr()
-}
-
-// RemoteAddr implements net.Conn.RemoteAddr
-func (c *Conn) RemoteAddr() net.Addr {
-	return c.nextConn.RemoteAddr()
-}
-
-// SetDeadline implements net.Conn.SetDeadline
-func (c *Conn) SetDeadline(t time.Time) error {
-	c.readDeadline.Set(t)
-	return c.SetWriteDeadline(t)
-}
-
-// SetReadDeadline implements net.Conn.SetReadDeadline
-func (c *Conn) SetReadDeadline(t time.Time) error {
-	c.readDeadline.Set(t)
-	// Read deadline is fully managed by this layer.
-	// Don't set read deadline to underlying connection.
-	return nil
-}
-
-// SetWriteDeadline implements net.Conn.SetWriteDeadline
-func (c *Conn) SetWriteDeadline(t time.Time) error {
-	c.writeDeadline.Set(t)
-	// Write deadline is also fully managed by this layer.
-	return nil
-}
--- a/anylink/dtls-2.0.9/conn_go_test.go
+++ b/anylink/dtls-2.0.9/conn_go_test.go
@ -1,169 +0,0 @@
-// +build !js
-
-package dtls
-
-import (
-	"bytes"
-	"context"
-	"crypto/tls"
-	"net"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2/internal/net/dpipe"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-	"github.com/pion/transport/test"
-)
-
-func TestContextConfig(t *testing.T) {
-	// Limit runtime in case of deadlocks
-	lim := test.TimeOut(time.Second * 20)
-	defer lim.Stop()
-
-	report := test.CheckRoutines(t)
-	defer report()
-
-	addrListen, err := net.ResolveUDPAddr("udp", "localhost:0")
-	if err != nil {
-		t.Fatalf("Unexpected error: %v", err)
-	}
-
-	// Dummy listener
-	listen, err := net.ListenUDP("udp", addrListen)
-	if err != nil {
-		t.Fatalf("Unexpected error: %v", err)
-	}
-	defer func() {
-		_ = listen.Close()
-	}()
-	addr := listen.LocalAddr().(*net.UDPAddr)
-
-	cert, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatalf("Unexpected error: %v", err)
-	}
-	config := &Config{
-		ConnectContextMaker: func() (context.Context, func()) {
-			return context.WithTimeout(context.Background(), 40*time.Millisecond)
-		},
-		Certificates: []tls.Certificate{cert},
-	}
-
-	dials := map[string]struct {
-		f     func() (func() (net.Conn, error), func())
-		order []byte
-	}{
-		"Dial": {
-			f: func() (func() (net.Conn, error), func()) {
-				return func() (net.Conn, error) {
-						return Dial("udp", addr, config)
-					}, func() {
-					}
-			},
-			order: []byte{0, 1, 2},
-		},
-		"DialWithContext": {
-			f: func() (func() (net.Conn, error), func()) {
-				ctx, cancel := context.WithTimeout(context.Background(), 80*time.Millisecond)
-				return func() (net.Conn, error) {
-						return DialWithContext(ctx, "udp", addr, config)
-					}, func() {
-						cancel()
-					}
-			},
-			order: []byte{0, 2, 1},
-		},
-		"Client": {
-			f: func() (func() (net.Conn, error), func()) {
-				ca, _ := dpipe.Pipe()
-				return func() (net.Conn, error) {
-						return Client(ca, config)
-					}, func() {
-						_ = ca.Close()
-					}
-			},
-			order: []byte{0, 1, 2},
-		},
-		"ClientWithContext": {
-			f: func() (func() (net.Conn, error), func()) {
-				ctx, cancel := context.WithTimeout(context.Background(), 80*time.Millisecond)
-				ca, _ := dpipe.Pipe()
-				return func() (net.Conn, error) {
-						return ClientWithContext(ctx, ca, config)
-					}, func() {
-						cancel()
-						_ = ca.Close()
-					}
-			},
-			order: []byte{0, 2, 1},
-		},
-		"Server": {
-			f: func() (func() (net.Conn, error), func()) {
-				ca, _ := dpipe.Pipe()
-				return func() (net.Conn, error) {
-						return Server(ca, config)
-					}, func() {
-						_ = ca.Close()
-					}
-			},
-			order: []byte{0, 1, 2},
-		},
-		"ServerWithContext": {
-			f: func() (func() (net.Conn, error), func()) {
-				ctx, cancel := context.WithTimeout(context.Background(), 80*time.Millisecond)
-				ca, _ := dpipe.Pipe()
-				return func() (net.Conn, error) {
-						return ServerWithContext(ctx, ca, config)
-					}, func() {
-						cancel()
-						_ = ca.Close()
-					}
-			},
-			order: []byte{0, 2, 1},
-		},
-	}
-
-	for name, dial := range dials {
-		dial := dial
-		t.Run(name, func(t *testing.T) {
-			done := make(chan struct{})
-
-			go func() {
-				d, cancel := dial.f()
-				conn, err := d()
-				defer cancel()
-				if netErr, ok := err.(net.Error); !ok || !netErr.Timeout() {
-					t.Errorf("Client error exp(Temporary network error) failed(%v)", err)
-					close(done)
-					return
-				}
-				done <- struct{}{}
-				if err == nil {
-					_ = conn.Close()
-				}
-			}()
-
-			var order []byte
-			early := time.After(20 * time.Millisecond)
-			late := time.After(60 * time.Millisecond)
-			func() {
-				for len(order) < 3 {
-					select {
-					case <-early:
-						order = append(order, 0)
-					case _, ok := <-done:
-						if !ok {
-							return
-						}
-						order = append(order, 1)
-					case <-late:
-						order = append(order, 2)
-					}
-				}
-			}()
-			if !bytes.Equal(dial.order, order) {
-				t.Errorf("Invalid cancel timing, expected: %v, got: %v", dial.order, order)
-			}
-		})
-	}
-}
--- a/anylink/dtls-2.0.9/conn_test.go
+++ b/anylink/dtls-2.0.9/conn_test.go
--- a/anylink/dtls-2.0.9/crypto.go
+++ b/anylink/dtls-2.0.9/crypto.go
@ -1,221 +0,0 @@
-package dtls
-
-import (
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/sha256"
-	"crypto/x509"
-	"encoding/asn1"
-	"encoding/binary"
-	"math/big"
-	"time"
-
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/crypto/hash"
-)
-
-type ecdsaSignature struct {
-	R, S *big.Int
-}
-
-func valueKeyMessage(clientRandom, serverRandom, publicKey []byte, namedCurve elliptic.Curve) []byte {
-	serverECDHParams := make([]byte, 4)
-	serverECDHParams[0] = 3 // named curve
-	binary.BigEndian.PutUint16(serverECDHParams[1:], uint16(namedCurve))
-	serverECDHParams[3] = byte(len(publicKey))
-
-	plaintext := []byte{}
-	plaintext = append(plaintext, clientRandom...)
-	plaintext = append(plaintext, serverRandom...)
-	plaintext = append(plaintext, serverECDHParams...)
-	plaintext = append(plaintext, publicKey...)
-
-	return plaintext
-}
-
-// If the client provided a "signature_algorithms" extension, then all
-// certificates provided by the server MUST be signed by a
-// hash/signature algorithm pair that appears in that extension
-//
-// https://tools.ietf.org/html/rfc5246#section-7.4.2
-func generateKeySignature(clientRandom, serverRandom, publicKey []byte, namedCurve elliptic.Curve, privateKey crypto.PrivateKey, hashAlgorithm hash.Algorithm) ([]byte, error) {
-	msg := valueKeyMessage(clientRandom, serverRandom, publicKey, namedCurve)
-	switch p := privateKey.(type) {
-	case ed25519.PrivateKey:
-		// https://crypto.stackexchange.com/a/55483
-		return p.Sign(rand.Reader, msg, crypto.Hash(0))
-	case *ecdsa.PrivateKey:
-		hashed := hashAlgorithm.Digest(msg)
-		return p.Sign(rand.Reader, hashed, hashAlgorithm.CryptoHash())
-	case *rsa.PrivateKey:
-		hashed := hashAlgorithm.Digest(msg)
-		return p.Sign(rand.Reader, hashed, hashAlgorithm.CryptoHash())
-	}
-
-	return nil, errKeySignatureGenerateUnimplemented
-}
-
-func verifyKeySignature(message, remoteKeySignature []byte, hashAlgorithm hash.Algorithm, rawCertificates [][]byte) error { //nolint:dupl
-	if len(rawCertificates) == 0 {
-		return errLengthMismatch
-	}
-	certificate, err := x509.ParseCertificate(rawCertificates[0])
-	if err != nil {
-		return err
-	}
-
-	switch p := certificate.PublicKey.(type) {
-	case ed25519.PublicKey:
-		if ok := ed25519.Verify(p, message, remoteKeySignature); !ok {
-			return errKeySignatureMismatch
-		}
-		return nil
-	case *ecdsa.PublicKey:
-		ecdsaSig := &ecdsaSignature{}
-		if _, err := asn1.Unmarshal(remoteKeySignature, ecdsaSig); err != nil {
-			return err
-		}
-		if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
-			return errInvalidECDSASignature
-		}
-		hashed := hashAlgorithm.Digest(message)
-		if !ecdsa.Verify(p, hashed, ecdsaSig.R, ecdsaSig.S) {
-			return errKeySignatureMismatch
-		}
-		return nil
-	case *rsa.PublicKey:
-		switch certificate.SignatureAlgorithm {
-		case x509.SHA1WithRSA, x509.SHA256WithRSA, x509.SHA384WithRSA, x509.SHA512WithRSA:
-			hashed := hashAlgorithm.Digest(message)
-			return rsa.VerifyPKCS1v15(p, hashAlgorithm.CryptoHash(), hashed, remoteKeySignature)
-		default:
-			return errKeySignatureVerifyUnimplemented
-		}
-	}
-
-	return errKeySignatureVerifyUnimplemented
-}
-
-// If the server has sent a CertificateRequest message, the client MUST send the Certificate
-// message.  The ClientKeyExchange message is now sent, and the content
-// of that message will depend on the public key algorithm selected
-// between the ClientHello and the ServerHello.  If the client has sent
-// a certificate with signing ability, a digitally-signed
-// CertificateVerify message is sent to explicitly verify possession of
-// the private key in the certificate.
-// https://tools.ietf.org/html/rfc5246#section-7.3
-func generateCertificateVerify(handshakeBodies []byte, privateKey crypto.PrivateKey, hashAlgorithm hash.Algorithm) ([]byte, error) {
-	h := sha256.New()
-	if _, err := h.Write(handshakeBodies); err != nil {
-		return nil, err
-	}
-	hashed := h.Sum(nil)
-
-	switch p := privateKey.(type) {
-	case ed25519.PrivateKey:
-		// https://crypto.stackexchange.com/a/55483
-		return p.Sign(rand.Reader, hashed, crypto.Hash(0))
-	case *ecdsa.PrivateKey:
-		return p.Sign(rand.Reader, hashed, hashAlgorithm.CryptoHash())
-	case *rsa.PrivateKey:
-		return p.Sign(rand.Reader, hashed, hashAlgorithm.CryptoHash())
-	}
-
-	return nil, errInvalidSignatureAlgorithm
-}
-
-func verifyCertificateVerify(handshakeBodies []byte, hashAlgorithm hash.Algorithm, remoteKeySignature []byte, rawCertificates [][]byte) error { //nolint:dupl
-	if len(rawCertificates) == 0 {
-		return errLengthMismatch
-	}
-	certificate, err := x509.ParseCertificate(rawCertificates[0])
-	if err != nil {
-		return err
-	}
-
-	switch p := certificate.PublicKey.(type) {
-	case ed25519.PublicKey:
-		if ok := ed25519.Verify(p, handshakeBodies, remoteKeySignature); !ok {
-			return errKeySignatureMismatch
-		}
-		return nil
-	case *ecdsa.PublicKey:
-		ecdsaSig := &ecdsaSignature{}
-		if _, err := asn1.Unmarshal(remoteKeySignature, ecdsaSig); err != nil {
-			return err
-		}
-		if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
-			return errInvalidECDSASignature
-		}
-		hash := hashAlgorithm.Digest(handshakeBodies)
-		if !ecdsa.Verify(p, hash, ecdsaSig.R, ecdsaSig.S) {
-			return errKeySignatureMismatch
-		}
-		return nil
-	case *rsa.PublicKey:
-		switch certificate.SignatureAlgorithm {
-		case x509.SHA1WithRSA, x509.SHA256WithRSA, x509.SHA384WithRSA, x509.SHA512WithRSA:
-			hash := hashAlgorithm.Digest(handshakeBodies)
-			return rsa.VerifyPKCS1v15(p, hashAlgorithm.CryptoHash(), hash, remoteKeySignature)
-		default:
-			return errKeySignatureVerifyUnimplemented
-		}
-	}
-
-	return errKeySignatureVerifyUnimplemented
-}
-
-func loadCerts(rawCertificates [][]byte) ([]*x509.Certificate, error) {
-	if len(rawCertificates) == 0 {
-		return nil, errLengthMismatch
-	}
-
-	certs := make([]*x509.Certificate, 0, len(rawCertificates))
-	for _, rawCert := range rawCertificates {
-		cert, err := x509.ParseCertificate(rawCert)
-		if err != nil {
-			return nil, err
-		}
-		certs = append(certs, cert)
-	}
-	return certs, nil
-}
-
-func verifyClientCert(rawCertificates [][]byte, roots *x509.CertPool) (chains [][]*x509.Certificate, err error) {
-	certificate, err := loadCerts(rawCertificates)
-	if err != nil {
-		return nil, err
-	}
-	intermediateCAPool := x509.NewCertPool()
-	for _, cert := range certificate[1:] {
-		intermediateCAPool.AddCert(cert)
-	}
-	opts := x509.VerifyOptions{
-		Roots:         roots,
-		CurrentTime:   time.Now(),
-		Intermediates: intermediateCAPool,
-		KeyUsages:     []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
-	}
-	return certificate[0].Verify(opts)
-}
-
-func verifyServerCert(rawCertificates [][]byte, roots *x509.CertPool, serverName string) (chains [][]*x509.Certificate, err error) {
-	certificate, err := loadCerts(rawCertificates)
-	if err != nil {
-		return nil, err
-	}
-	intermediateCAPool := x509.NewCertPool()
-	for _, cert := range certificate[1:] {
-		intermediateCAPool.AddCert(cert)
-	}
-	opts := x509.VerifyOptions{
-		Roots:         roots,
-		CurrentTime:   time.Now(),
-		DNSName:       serverName,
-		Intermediates: intermediateCAPool,
-	}
-	return certificate[0].Verify(opts)
-}
--- a/anylink/dtls-2.0.9/crypto_test.go
+++ b/anylink/dtls-2.0.9/crypto_test.go
@ -1,73 +0,0 @@
-package dtls
-
-import (
-	"bytes"
-	"crypto/x509"
-	"encoding/pem"
-	"testing"
-
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/crypto/hash"
-)
-
-const rawPrivateKey = `
-----BEGIN RSA PRIVATE KEY-----
-MIIEowIBAAKCAQEAxIA2BrrnR2sIlATsp7aRBD/3krwZ7vt9dNeoDQAee0s6SuYP
-6MBx/HPnAkwNvPS90R05a7pwRkoT6Ur4PfPhCVlUe8lV+0Eto3ZSEeHz3HdsqlM3
-bso67L7Dqrc7MdVstlKcgJi8yeAoGOIL9/igOv0XBFCeznm9nznx6mnsR5cugw+1
-ypXelaHmBCLV7r5SeVSh57+KhvZGbQ2fFpUaTPegRpJZXBNS8lSeWvtOv9d6N5UB
-ROTAJodMZT5AfX0jB0QB9IT/0I96H6BSENH08NXOeXApMuLKvnAf361rS7cRAfRL
-rWZqERMP4u6Cnk0Cnckc3WcW27kGGIbtwbqUIQIDAQABAoIBAGF7OVIdZp8Hejn0
-N3L8HvT8xtUEe9kS6ioM0lGgvX5s035Uo4/T6LhUx0VcdXRH9eLHnLTUyN4V4cra
-ZkxVsE3zAvZl60G6E+oDyLMWZOP6Wu4kWlub9597A5atT7BpMIVCdmFVZFLB4SJ3
-AXkC3nplFAYP+Lh1rJxRIrIn2g+pEeBboWbYA++oDNuMQffDZaokTkJ8Bn1JZYh0
-xEXKY8Bi2Egd5NMeZa1UFO6y8tUbZfwgVs6Enq5uOgtfayq79vZwyjj1kd29MBUD
-8g8byV053ZKxbUOiOuUts97eb+fN3DIDRTcT2c+lXt/4C54M1FclJAbtYRK/qwsl
-pYWKQAECgYEA4ZUbqQnTo1ICvj81ifGrz+H4LKQqe92Hbf/W51D/Umk2kP702W22
-HP4CvrJRtALThJIG9m2TwUjl/WAuZIBrhSAbIvc3Fcoa2HjdRp+sO5U1ueDq7d/S
-Z+PxRI8cbLbRpEdIaoR46qr/2uWZ943PHMv9h4VHPYn1w8b94hwD6vkCgYEA3v87
-mFLzyM9ercnEv9zHMRlMZFQhlcUGQZvfb8BuJYl/WogyT6vRrUuM0QXULNEPlrin
-mBQTqc1nCYbgkFFsD2VVt1qIyiAJsB9MD1LNV6YuvE7T2KOSadmsA4fa9PUqbr71
-hf3lTTq+LeR09LebO7WgSGYY+5YKVOEGpYMR1GkCgYEAxPVQmk3HKHEhjgRYdaG5
-lp9A9ZE8uruYVJWtiHgzBTxx9TV2iST+fd/We7PsHFTfY3+wbpcMDBXfIVRKDVwH
-BMwchXH9+Ztlxx34bYJaegd0SmA0Hw9ugWEHNgoSEmWpM1s9wir5/ELjc7dGsFtz
-uzvsl9fpdLSxDYgAAdzeGtkCgYBAzKIgrVox7DBzB8KojhtD5ToRnXD0+H/M6OKQ
-srZPKhlb0V/tTtxrIx0UUEFLlKSXA6mPw6XDHfDnD86JoV9pSeUSlrhRI+Ysy6tq
-eIE7CwthpPZiaYXORHZ7wCqcK/HcpJjsCs9rFbrV0yE5S3FMdIbTAvgXg44VBB7O
-UbwIoQKBgDuY8gSrA5/A747wjjmsdRWK4DMTMEV4eCW1BEP7Tg7Cxd5n3xPJiYhr
-nhLGN+mMnVIcv2zEMS0/eNZr1j/0BtEdx+3IC6Eq+ONY0anZ4Irt57/5QeKgKn/L
-JPhfPySIPG4UmwE4gW8t79vfOKxnUu2fDD1ZXUYopan6EckACNH/
-----END RSA PRIVATE KEY-----
-`
-
-func TestGenerateKeySignature(t *testing.T) {
-	block, _ := pem.Decode([]byte(rawPrivateKey))
-	key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
-	if err != nil {
-		t.Error(err)
-	}
-
-	clientRandom := []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}
-	serverRandom := []byte{0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f}
-	publicKey := []byte{0x20, 0x9f, 0xd7, 0xad, 0x6d, 0xcf, 0xf4, 0x29, 0x8d, 0xd3, 0xf9, 0x6d, 0x5b, 0x1b, 0x2a, 0xf9, 0x10, 0xa0, 0x53, 0x5b, 0x14, 0x88, 0xd7, 0xf8, 0xfa, 0xbb, 0x34, 0x9a, 0x98, 0x28, 0x80, 0xb6, 0x15}
-	expectedSignature := []byte{
-		0x6f, 0x47, 0x97, 0x85, 0xcc, 0x76, 0x50, 0x93, 0xbd, 0xe2, 0x6a, 0x69, 0x0b, 0xc3, 0x03, 0xd1, 0xb7, 0xe4, 0xab, 0x88, 0x7b, 0xa6, 0x52, 0x80, 0xdf,
-		0xaa, 0x25, 0x7a, 0xdb, 0x29, 0x32, 0xe4, 0xd8, 0x28, 0x28, 0xb3, 0xe8, 0x04, 0x3c, 0x38, 0x16, 0xfc, 0x78, 0xe9, 0x15, 0x7b, 0xc5, 0xbd, 0x7d, 0xfc,
-		0xcd, 0x83, 0x00, 0x57, 0x4a, 0x3c, 0x23, 0x85, 0x75, 0x6b, 0x37, 0xd5, 0x89, 0x72, 0x73, 0xf0, 0x44, 0x8c, 0x00, 0x70, 0x1f, 0x6e, 0xa2, 0x81, 0xd0,
-		0x09, 0xc5, 0x20, 0x36, 0xab, 0x23, 0x09, 0x40, 0x1f, 0x4d, 0x45, 0x96, 0x62, 0xbb, 0x81, 0xb0, 0x30, 0x72, 0xad, 0x3a, 0x0a, 0xac, 0x31, 0x63, 0x40,
-		0x52, 0x0a, 0x27, 0xf3, 0x34, 0xde, 0x27, 0x7d, 0xb7, 0x54, 0xff, 0x0f, 0x9f, 0x5a, 0xfe, 0x07, 0x0f, 0x4e, 0x9f, 0x53, 0x04, 0x34, 0x62, 0xf4, 0x30,
-		0x74, 0x83, 0x35, 0xfc, 0xe4, 0x7e, 0xbf, 0x5a, 0xc4, 0x52, 0xd0, 0xea, 0xf9, 0x61, 0x4e, 0xf5, 0x1c, 0x0e, 0x58, 0x02, 0x71, 0xfb, 0x1f, 0x34, 0x55,
-		0xe8, 0x36, 0x70, 0x3c, 0xc1, 0xcb, 0xc9, 0xb7, 0xbb, 0xb5, 0x1c, 0x44, 0x9a, 0x6d, 0x88, 0x78, 0x98, 0xd4, 0x91, 0x2e, 0xeb, 0x98, 0x81, 0x23, 0x30,
-		0x73, 0x39, 0x43, 0xd5, 0xbb, 0x70, 0x39, 0xba, 0x1f, 0xdb, 0x70, 0x9f, 0x91, 0x83, 0x56, 0xc2, 0xde, 0xed, 0x17, 0x6d, 0x2c, 0x3e, 0x21, 0xea, 0x36,
-		0xb4, 0x91, 0xd8, 0x31, 0x05, 0x60, 0x90, 0xfd, 0xc6, 0x74, 0xa9, 0x7b, 0x18, 0xfc, 0x1c, 0x6a, 0x1c, 0x6e, 0xec, 0xd3, 0xc1, 0xc0, 0x0d, 0x11, 0x25,
-		0x48, 0x37, 0x3d, 0x45, 0x11, 0xa2, 0x31, 0x14, 0x0a, 0x66, 0x9f, 0xd8, 0xac, 0x74, 0xa2, 0xcd, 0xc8, 0x79, 0xb3, 0x9e, 0xc6, 0x66, 0x25, 0xcf, 0x2c,
-		0x87, 0x5e, 0x5c, 0x36, 0x75, 0x86,
-	}
-
-	signature, err := generateKeySignature(clientRandom, serverRandom, publicKey, elliptic.X25519, key, hash.SHA256)
-	if err != nil {
-		t.Error(err)
-	} else if !bytes.Equal(expectedSignature, signature) {
-		t.Errorf("Signature generation failed \nexp % 02x \nactual % 02x ", expectedSignature, signature)
-	}
-}
--- a/anylink/dtls-2.0.9/dtls.go
+++ b/anylink/dtls-2.0.9/dtls.go
@ -1,2 +0,0 @@
-// Package dtls implements Datagram Transport Layer Security (DTLS) 1.2
-package dtls
--- a/anylink/dtls-2.0.9/e2e/Dockerfile
+++ b/anylink/dtls-2.0.9/e2e/Dockerfile
@ -1,11 +0,0 @@
-FROM golang:1.14-alpine3.11
-
-RUN apk add --no-cache \
-  openssl
-
-ENV CGO_ENABLED=0
-
-COPY . /go/src/github.com/pion/dtls
-WORKDIR /go/src/github.com/pion/dtls/e2e
-
-CMD ["go", "test", "-tags=openssl", "-v", "."]
--- a/anylink/dtls-2.0.9/e2e/e2e.go
+++ b/anylink/dtls-2.0.9/e2e/e2e.go
@ -1,2 +0,0 @@
-// Package e2e contains end to end tests for pion/dtls
-package e2e
--- a/anylink/dtls-2.0.9/e2e/e2e_lossy_test.go
+++ b/anylink/dtls-2.0.9/e2e/e2e_lossy_test.go
@ -1,207 +0,0 @@
-package e2e
-
-import (
-	"crypto/tls"
-	"fmt"
-	"math/rand"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-	transportTest "github.com/pion/transport/test"
-)
-
-const (
-	flightInterval   = time.Millisecond * 100
-	lossyTestTimeout = 30 * time.Second
-)
-
-/*
-  DTLS Client/Server over a lossy transport, just asserts it can handle at increasing increments
-*/
-func TestPionE2ELossy(t *testing.T) {
-	// Check for leaking routines
-	report := transportTest.CheckRoutines(t)
-	defer report()
-
-	type runResult struct {
-		dtlsConn *dtls.Conn
-		err      error
-	}
-
-	serverCert, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	clientCert, err := selfsign.GenerateSelfSigned()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	for _, test := range []struct {
-		LossChanceRange int
-		DoClientAuth    bool
-		CipherSuites    []dtls.CipherSuiteID
-		MTU             int
-	}{
-		{
-			LossChanceRange: 0,
-		},
-		{
-			LossChanceRange: 10,
-		},
-		{
-			LossChanceRange: 20,
-		},
-		{
-			LossChanceRange: 50,
-		},
-		{
-			LossChanceRange: 0,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 10,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 20,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 50,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 0,
-			CipherSuites:    []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA},
-		},
-		{
-			LossChanceRange: 10,
-			CipherSuites:    []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA},
-		},
-		{
-			LossChanceRange: 20,
-			CipherSuites:    []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA},
-		},
-		{
-			LossChanceRange: 50,
-			CipherSuites:    []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA},
-		},
-		{
-			LossChanceRange: 10,
-			MTU:             100,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 20,
-			MTU:             100,
-			DoClientAuth:    true,
-		},
-		{
-			LossChanceRange: 50,
-			MTU:             100,
-			DoClientAuth:    true,
-		},
-	} {
-		name := fmt.Sprintf("Loss%d_MTU%d", test.LossChanceRange, test.MTU)
-		if test.DoClientAuth {
-			name += "_WithCliAuth"
-		}
-		for _, ciph := range test.CipherSuites {
-			name += "_With" + ciph.String()
-		}
-		test := test
-		t.Run(name, func(t *testing.T) {
-			// Limit runtime in case of deadlocks
-			lim := transportTest.TimeOut(lossyTestTimeout + time.Second)
-			defer lim.Stop()
-
-			rand.Seed(time.Now().UTC().UnixNano())
-			chosenLoss := rand.Intn(9) + test.LossChanceRange //nolint:gosec
-			serverDone := make(chan runResult)
-			clientDone := make(chan runResult)
-			br := transportTest.NewBridge()
-
-			if err = br.SetLossChance(chosenLoss); err != nil {
-				t.Fatal(err)
-			}
-
-			go func() {
-				cfg := &dtls.Config{
-					FlightInterval:     flightInterval,
-					CipherSuites:       test.CipherSuites,
-					InsecureSkipVerify: true,
-					MTU:                test.MTU,
-				}
-
-				if test.DoClientAuth {
-					cfg.Certificates = []tls.Certificate{clientCert}
-				}
-
-				client, startupErr := dtls.Client(br.GetConn0(), cfg)
-				clientDone <- runResult{client, startupErr}
-			}()
-
-			go func() {
-				cfg := &dtls.Config{
-					Certificates:   []tls.Certificate{serverCert},
-					FlightInterval: flightInterval,
-					MTU:            test.MTU,
-				}
-
-				if test.DoClientAuth {
-					cfg.ClientAuth = dtls.RequireAnyClientCert
-				}
-
-				server, startupErr := dtls.Server(br.GetConn1(), cfg)
-				serverDone <- runResult{server, startupErr}
-			}()
-
-			testTimer := time.NewTimer(lossyTestTimeout)
-			var serverConn, clientConn *dtls.Conn
-			defer func() {
-				if serverConn != nil {
-					if err = serverConn.Close(); err != nil {
-						t.Error(err)
-					}
-				}
-				if clientConn != nil {
-					if err = clientConn.Close(); err != nil {
-						t.Error(err)
-					}
-				}
-			}()
-
-			for {
-				if serverConn != nil && clientConn != nil {
-					break
-				}
-
-				br.Tick()
-				select {
-				case serverResult := <-serverDone:
-					if serverResult.err != nil {
-						t.Errorf("Fail, serverError: clientComplete(%t) serverComplete(%t) LossChance(%d) error(%v)", clientConn != nil, serverConn != nil, chosenLoss, serverResult.err)
-						return
-					}
-
-					serverConn = serverResult.dtlsConn
-				case clientResult := <-clientDone:
-					if clientResult.err != nil {
-						t.Errorf("Fail, clientError: clientComplete(%t) serverComplete(%t) LossChance(%d) error(%v)", clientConn != nil, serverConn != nil, chosenLoss, clientResult.err)
-						return
-					}
-
-					clientConn = clientResult.dtlsConn
-				case <-testTimer.C:
-					t.Errorf("Test expired: clientComplete(%t) serverComplete(%t) LossChance(%d)", clientConn != nil, serverConn != nil, chosenLoss)
-					return
-				case <-time.After(10 * time.Millisecond):
-				}
-			}
-		})
-	}
-}
--- a/anylink/dtls-2.0.9/e2e/e2e_openssl_test.go
+++ b/anylink/dtls-2.0.9/e2e/e2e_openssl_test.go
@ -1,250 +0,0 @@
-// +build openssl,!js
-
-package e2e
-
-import (
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"net"
-	"os"
-	"os/exec"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2"
-)
-
-func serverOpenSSL(c *comm) {
-	go func() {
-		c.serverMutex.Lock()
-		defer c.serverMutex.Unlock()
-
-		cfg := c.serverConfig
-
-		// create openssl arguments
-		args := []string{
-			"s_server",
-			"-dtls1_2",
-			"-quiet",
-			"-verify_quiet",
-			"-verify_return_error",
-			fmt.Sprintf("-accept=%d", c.serverPort),
-		}
-		ciphers := ciphersOpenSSL(cfg)
-		if ciphers != "" {
-			args = append(args, fmt.Sprintf("-cipher=%s", ciphers))
-		}
-
-		// psk arguments
-		if cfg.PSK != nil {
-			psk, err := cfg.PSK(nil)
-			if err != nil {
-				c.errChan <- err
-				return
-			}
-			args = append(args, fmt.Sprintf("-psk=%X", psk))
-			if len(cfg.PSKIdentityHint) > 0 {
-				args = append(args, fmt.Sprintf("-psk_hint=%s", cfg.PSKIdentityHint))
-			}
-		}
-
-		// certs arguments
-		if len(cfg.Certificates) > 0 {
-			// create temporary cert files
-			certPEM, keyPEM, err := writeTempPEM(cfg)
-			if err != nil {
-				c.errChan <- err
-				return
-			}
-			args = append(args,
-				fmt.Sprintf("-cert=%s", certPEM),
-				fmt.Sprintf("-key=%s", keyPEM))
-			defer func() {
-				_ = os.Remove(certPEM)
-				_ = os.Remove(keyPEM)
-			}()
-		} else {
-			args = append(args, "-nocert")
-		}
-
-		// launch command
-		// #nosec G204
-		cmd := exec.CommandContext(c.ctx, "openssl", args...)
-		var inner net.Conn
-		inner, c.serverConn = net.Pipe()
-		cmd.Stdin = inner
-		cmd.Stdout = inner
-		cmd.Stderr = os.Stderr
-		if err := cmd.Start(); err != nil {
-			c.errChan <- err
-			_ = inner.Close()
-			return
-		}
-
-		// Ensure that server has started
-		time.Sleep(500 * time.Millisecond)
-
-		c.serverReady <- struct{}{}
-		simpleReadWrite(c.errChan, c.serverChan, c.serverConn, c.messageRecvCount)
-	}()
-}
-
-func clientOpenSSL(c *comm) {
-	select {
-	case <-c.serverReady:
-		// OK
-	case <-time.After(time.Second):
-		c.errChan <- errors.New("waiting on serverReady err: timeout")
-	}
-
-	c.clientMutex.Lock()
-	defer c.clientMutex.Unlock()
-
-	cfg := c.clientConfig
-
-	// create openssl arguments
-	args := []string{
-		"s_client",
-		"-dtls1_2",
-		"-quiet",
-		"-verify_quiet",
-		"-verify_return_error",
-		"-servername=localhost",
-		fmt.Sprintf("-connect=127.0.0.1:%d", c.serverPort),
-	}
-	ciphers := ciphersOpenSSL(cfg)
-	if ciphers != "" {
-		args = append(args, fmt.Sprintf("-cipher=%s", ciphers))
-	}
-
-	// psk arguments
-	if cfg.PSK != nil {
-		psk, err := cfg.PSK(nil)
-		if err != nil {
-			c.errChan <- err
-			return
-		}
-		args = append(args, fmt.Sprintf("-psk=%X", psk))
-	}
-
-	// certificate arguments
-	if len(cfg.Certificates) > 0 {
-		// create temporary cert files
-		certPEM, keyPEM, err := writeTempPEM(cfg)
-		if err != nil {
-			c.errChan <- err
-			return
-		}
-		args = append(args, fmt.Sprintf("-CAfile=%s", certPEM))
-		defer func() {
-			_ = os.Remove(certPEM)
-			_ = os.Remove(keyPEM)
-		}()
-	}
-
-	// launch command
-	// #nosec G204
-	cmd := exec.CommandContext(c.ctx, "openssl", args...)
-	var inner net.Conn
-	inner, c.clientConn = net.Pipe()
-	cmd.Stdin = inner
-	cmd.Stdout = inner
-	cmd.Stderr = os.Stderr
-	if err := cmd.Start(); err != nil {
-		c.errChan <- err
-		_ = inner.Close()
-		return
-	}
-
-	simpleReadWrite(c.errChan, c.clientChan, c.clientConn, c.messageRecvCount)
-}
-
-func ciphersOpenSSL(cfg *dtls.Config) string {
-	// See https://tls.mbed.org/supported-ssl-ciphersuites
-	translate := map[dtls.CipherSuiteID]string{
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_CCM:        "ECDHE-ECDSA-AES128-CCM",
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8:      "ECDHE-ECDSA-AES128-CCM8",
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: "ECDHE-ECDSA-AES128-GCM-SHA256",
-		dtls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:   "ECDHE-RSA-AES128-GCM-SHA256",
-
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA: "ECDHE-ECDSA-AES256-SHA",
-		dtls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:   "ECDHE-RSA-AES128-SHA",
-
-		dtls.TLS_PSK_WITH_AES_128_CCM:        "PSK-AES128-CCM",
-		dtls.TLS_PSK_WITH_AES_128_CCM_8:      "PSK-AES128-CCM8",
-		dtls.TLS_PSK_WITH_AES_128_GCM_SHA256: "PSK-AES128-GCM-SHA256",
-	}
-
-	var ciphers []string
-	for _, c := range cfg.CipherSuites {
-		if text, ok := translate[c]; ok {
-			ciphers = append(ciphers, text)
-		}
-	}
-	return strings.Join(ciphers, ";")
-}
-
-func writeTempPEM(cfg *dtls.Config) (string, string, error) {
-	certOut, err := ioutil.TempFile("", "cert.pem")
-	if err != nil {
-		return "", "", fmt.Errorf("failed to create temporary file: %w", err)
-	}
-	keyOut, err := ioutil.TempFile("", "key.pem")
-	if err != nil {
-		return "", "", fmt.Errorf("failed to create temporary file: %w", err)
-	}
-
-	cert := cfg.Certificates[0]
-	derBytes := cert.Certificate[0]
-	if err = pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
-		return "", "", fmt.Errorf("failed to write data to cert.pem: %w", err)
-	}
-	if err = certOut.Close(); err != nil {
-		return "", "", fmt.Errorf("error closing cert.pem: %w", err)
-	}
-
-	priv := cert.PrivateKey
-	var privBytes []byte
-	privBytes, err = x509.MarshalPKCS8PrivateKey(priv)
-	if err != nil {
-		return "", "", fmt.Errorf("unable to marshal private key: %w", err)
-	}
-	if err = pem.Encode(keyOut, &pem.Block{Type: "PRIVATE KEY", Bytes: privBytes}); err != nil {
-		return "", "", fmt.Errorf("failed to write data to key.pem: %w", err)
-	}
-	if err = keyOut.Close(); err != nil {
-		return "", "", fmt.Errorf("error closing key.pem: %w", err)
-	}
-	return certOut.Name(), keyOut.Name(), nil
-}
-
-func TestPionOpenSSLE2ESimple(t *testing.T) {
-	t.Run("OpenSSLServer", func(t *testing.T) {
-		testPionE2ESimple(t, serverOpenSSL, clientPion)
-	})
-	t.Run("OpenSSLClient", func(t *testing.T) {
-		testPionE2ESimple(t, serverPion, clientOpenSSL)
-	})
-}
-
-func TestPionOpenSSLE2ESimplePSK(t *testing.T) {
-	t.Run("OpenSSLServer", func(t *testing.T) {
-		testPionE2ESimplePSK(t, serverOpenSSL, clientPion)
-	})
-	t.Run("OpenSSLClient", func(t *testing.T) {
-		testPionE2ESimplePSK(t, serverPion, clientOpenSSL)
-	})
-}
-
-func TestPionOpenSSLE2EMTUs(t *testing.T) {
-	t.Run("OpenSSLServer", func(t *testing.T) {
-		testPionE2EMTUs(t, serverOpenSSL, clientPion)
-	})
-	t.Run("OpenSSLClient", func(t *testing.T) {
-		testPionE2EMTUs(t, serverPion, clientOpenSSL)
-	})
-}
--- a/anylink/dtls-2.0.9/e2e/e2e_openssl_v113_test.go
+++ b/anylink/dtls-2.0.9/e2e/e2e_openssl_v113_test.go
@ -1,17 +0,0 @@
-// +build openssl,go1.13,!js
-
-package e2e
-
-import (
-	"testing"
-)
-
-func TestPionOpenSSLE2ESimpleED25519(t *testing.T) {
-	t.Skip("TODO: waiting OpenSSL's DTLS Ed25519 support")
-	t.Run("OpenSSLServer", func(t *testing.T) {
-		testPionE2ESimpleED25519(t, serverOpenSSL, clientPion)
-	})
-	t.Run("OpenSSLClient", func(t *testing.T) {
-		testPionE2ESimpleED25519(t, serverPion, clientOpenSSL)
-	})
-}
--- a/anylink/dtls-2.0.9/e2e/e2e_test.go
+++ b/anylink/dtls-2.0.9/e2e/e2e_test.go
@ -1,329 +0,0 @@
-// +build !js
-
-package e2e
-
-import (
-	"context"
-	"crypto/tls"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"sync"
-	"sync/atomic"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-	"github.com/pion/transport/test"
-)
-
-const (
-	testMessage   = "Hello World"
-	testTimeLimit = 5 * time.Second
-	messageRetry  = 200 * time.Millisecond
-)
-
-var errServerTimeout = errors.New("waiting on serverReady err: timeout")
-
-func randomPort(t testing.TB) int {
-	t.Helper()
-	conn, err := net.ListenPacket("udp4", "127.0.0.1:0")
-	if err != nil {
-		t.Fatalf("failed to pickPort: %v", err)
-	}
-	defer func() {
-		_ = conn.Close()
-	}()
-	switch addr := conn.LocalAddr().(type) {
-	case *net.UDPAddr:
-		return addr.Port
-	default:
-		t.Fatalf("unknown addr type %T", addr)
-		return 0
-	}
-}
-
-func simpleReadWrite(errChan chan error, outChan chan string, conn io.ReadWriter, messageRecvCount *uint64) {
-	go func() {
-		buffer := make([]byte, 8192)
-		n, err := conn.Read(buffer)
-		if err != nil {
-			errChan <- err
-			return
-		}
-
-		outChan <- string(buffer[:n])
-		atomic.AddUint64(messageRecvCount, 1)
-	}()
-
-	for {
-		if atomic.LoadUint64(messageRecvCount) == 2 {
-			break
-		} else if _, err := conn.Write([]byte(testMessage)); err != nil {
-			errChan <- err
-			break
-		}
-
-		time.Sleep(messageRetry)
-	}
-}
-
-type comm struct {
-	ctx                        context.Context
-	clientConfig, serverConfig *dtls.Config
-	serverPort                 int
-	messageRecvCount           *uint64 // Counter to make sure both sides got a message
-	clientMutex                *sync.Mutex
-	clientConn                 net.Conn
-	serverMutex                *sync.Mutex
-	serverConn                 net.Conn
-	serverListener             net.Listener
-	serverReady                chan struct{}
-	errChan                    chan error
-	clientChan                 chan string
-	serverChan                 chan string
-	client                     func(*comm)
-	server                     func(*comm)
-}
-
-func newComm(ctx context.Context, clientConfig, serverConfig *dtls.Config, serverPort int, server, client func(*comm)) *comm {
-	messageRecvCount := uint64(0)
-	c := &comm{
-		ctx:              ctx,
-		clientConfig:     clientConfig,
-		serverConfig:     serverConfig,
-		serverPort:       serverPort,
-		messageRecvCount: &messageRecvCount,
-		clientMutex:      &sync.Mutex{},
-		serverMutex:      &sync.Mutex{},
-		serverReady:      make(chan struct{}),
-		errChan:          make(chan error),
-		clientChan:       make(chan string),
-		serverChan:       make(chan string),
-		server:           server,
-		client:           client,
-	}
-	return c
-}
-
-func (c *comm) assert(t *testing.T) {
-	// DTLS Client
-	go c.client(c)
-
-	// DTLS Server
-	go c.server(c)
-
-	defer func() {
-		if c.clientConn != nil {
-			if err := c.clientConn.Close(); err != nil {
-				t.Fatal(err)
-			}
-		}
-		if c.serverConn != nil {
-			if err := c.serverConn.Close(); err != nil {
-				t.Fatal(err)
-			}
-		}
-		if c.serverListener != nil {
-			if err := c.serverListener.Close(); err != nil {
-				t.Fatal(err)
-			}
-		}
-	}()
-
-	func() {
-		seenClient, seenServer := false, false
-		for {
-			select {
-			case err := <-c.errChan:
-				t.Fatal(err)
-			case <-time.After(testTimeLimit):
-				t.Fatalf("Test timeout, seenClient %t seenServer %t", seenClient, seenServer)
-			case clientMsg := <-c.clientChan:
-				if clientMsg != testMessage {
-					t.Fatalf("clientMsg does not equal test message: %s %s", clientMsg, testMessage)
-				}
-
-				seenClient = true
-				if seenClient && seenServer {
-					return
-				}
-			case serverMsg := <-c.serverChan:
-				if serverMsg != testMessage {
-					t.Fatalf("serverMsg does not equal test message: %s %s", serverMsg, testMessage)
-				}
-
-				seenServer = true
-				if seenClient && seenServer {
-					return
-				}
-			}
-		}
-	}()
-}
-
-func clientPion(c *comm) {
-	select {
-	case <-c.serverReady:
-		// OK
-	case <-time.After(time.Second):
-		c.errChan <- errServerTimeout
-	}
-
-	c.clientMutex.Lock()
-	defer c.clientMutex.Unlock()
-
-	var err error
-	c.clientConn, err = dtls.DialWithContext(c.ctx, "udp",
-		&net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: c.serverPort},
-		c.clientConfig,
-	)
-	if err != nil {
-		c.errChan <- err
-		return
-	}
-
-	simpleReadWrite(c.errChan, c.clientChan, c.clientConn, c.messageRecvCount)
-}
-
-func serverPion(c *comm) {
-	c.serverMutex.Lock()
-	defer c.serverMutex.Unlock()
-
-	var err error
-	c.serverListener, err = dtls.Listen("udp",
-		&net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: c.serverPort},
-		c.serverConfig,
-	)
-	if err != nil {
-		c.errChan <- err
-		return
-	}
-	c.serverReady <- struct{}{}
-	c.serverConn, err = c.serverListener.Accept()
-	if err != nil {
-		c.errChan <- err
-		return
-	}
-
-	simpleReadWrite(c.errChan, c.serverChan, c.serverConn, c.messageRecvCount)
-}
-
-/*
-  Simple DTLS Client/Server can communicate
-    - Assert that you can send messages both ways
-	- Assert that Close() on both ends work
-	- Assert that no Goroutines are leaked
-*/
-func testPionE2ESimple(t *testing.T, server, client func(*comm)) {
-	lim := test.TimeOut(time.Second * 30)
-	defer lim.Stop()
-
-	report := test.CheckRoutines(t)
-	defer report()
-
-	for _, cipherSuite := range []dtls.CipherSuiteID{
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
-	} {
-		cipherSuite := cipherSuite
-		t.Run(cipherSuite.String(), func(t *testing.T) {
-			ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
-			defer cancel()
-
-			cert, err := selfsign.GenerateSelfSignedWithDNS("localhost")
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			cfg := &dtls.Config{
-				Certificates:       []tls.Certificate{cert},
-				CipherSuites:       []dtls.CipherSuiteID{cipherSuite},
-				InsecureSkipVerify: true,
-			}
-			serverPort := randomPort(t)
-			comm := newComm(ctx, cfg, cfg, serverPort, server, client)
-			comm.assert(t)
-		})
-	}
-}
-
-func testPionE2ESimplePSK(t *testing.T, server, client func(*comm)) {
-	lim := test.TimeOut(time.Second * 30)
-	defer lim.Stop()
-
-	report := test.CheckRoutines(t)
-	defer report()
-
-	for _, cipherSuite := range []dtls.CipherSuiteID{
-		dtls.TLS_PSK_WITH_AES_128_CCM,
-		dtls.TLS_PSK_WITH_AES_128_CCM_8,
-		dtls.TLS_PSK_WITH_AES_128_GCM_SHA256,
-	} {
-		cipherSuite := cipherSuite
-		t.Run(cipherSuite.String(), func(t *testing.T) {
-			ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
-			defer cancel()
-
-			cfg := &dtls.Config{
-				PSK: func(hint []byte) ([]byte, error) {
-					return []byte{0xAB, 0xC1, 0x23}, nil
-				},
-				PSKIdentityHint: []byte{0x01, 0x02, 0x03, 0x04, 0x05},
-				CipherSuites:    []dtls.CipherSuiteID{cipherSuite},
-			}
-			serverPort := randomPort(t)
-			comm := newComm(ctx, cfg, cfg, serverPort, server, client)
-			comm.assert(t)
-		})
-	}
-}
-
-func testPionE2EMTUs(t *testing.T, server, client func(*comm)) {
-	lim := test.TimeOut(time.Second * 30)
-	defer lim.Stop()
-
-	report := test.CheckRoutines(t)
-	defer report()
-
-	for _, mtu := range []int{
-		10000,
-		1000,
-		100,
-	} {
-		mtu := mtu
-		t.Run(fmt.Sprintf("MTU%d", mtu), func(t *testing.T) {
-			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-			defer cancel()
-
-			cert, err := selfsign.GenerateSelfSignedWithDNS("localhost")
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			cfg := &dtls.Config{
-				Certificates:       []tls.Certificate{cert},
-				CipherSuites:       []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256},
-				InsecureSkipVerify: true,
-				MTU:                mtu,
-			}
-			serverPort := randomPort(t)
-			comm := newComm(ctx, cfg, cfg, serverPort, server, client)
-			comm.assert(t)
-		})
-	}
-}
-
-func TestPionE2ESimple(t *testing.T) {
-	testPionE2ESimple(t, serverPion, clientPion)
-}
-
-func TestPionE2ESimplePSK(t *testing.T) {
-	testPionE2ESimplePSK(t, serverPion, clientPion)
-}
-
-func TestPionE2EMTUs(t *testing.T) {
-	testPionE2EMTUs(t, serverPion, clientPion)
-}
--- a/anylink/dtls-2.0.9/e2e/e2e_v113_test.go
+++ b/anylink/dtls-2.0.9/e2e/e2e_v113_test.go
@ -1,62 +0,0 @@
-// +build go1.13,!js
-
-package e2e
-
-import (
-	"context"
-	"crypto/ed25519"
-	"crypto/rand"
-	"crypto/tls"
-	"testing"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-	"github.com/pion/transport/test"
-)
-
-// ED25519 is not supported in Go 1.12 crypto/x509.
-// Once Go 1.12 is deprecated, move this test to e2e_test.go.
-
-func testPionE2ESimpleED25519(t *testing.T, server, client func(*comm)) {
-	lim := test.TimeOut(time.Second * 30)
-	defer lim.Stop()
-
-	report := test.CheckRoutines(t)
-	defer report()
-
-	for _, cipherSuite := range []dtls.CipherSuiteID{
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_CCM,
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8,
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-		dtls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
-	} {
-		cipherSuite := cipherSuite
-		t.Run(cipherSuite.String(), func(t *testing.T) {
-			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-			defer cancel()
-
-			_, key, err := ed25519.GenerateKey(rand.Reader)
-			if err != nil {
-				t.Fatal(err)
-			}
-			cert, err := selfsign.SelfSign(key)
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			cfg := &dtls.Config{
-				Certificates:       []tls.Certificate{cert},
-				CipherSuites:       []dtls.CipherSuiteID{cipherSuite},
-				InsecureSkipVerify: true,
-			}
-			serverPort := randomPort(t)
-			comm := newComm(ctx, cfg, cfg, serverPort, server, client)
-			comm.assert(t)
-		})
-	}
-}
-
-func TestPionE2ESimpleED25519(t *testing.T) {
-	testPionE2ESimpleED25519(t, serverPion, clientPion)
-}
--- a/anylink/dtls-2.0.9/errors.go
+++ b/anylink/dtls-2.0.9/errors.go
@ -1,141 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"os"
-
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"golang.org/x/xerrors"
-)
-
-// Typed errors
-var (
-	ErrConnClosed = &FatalError{Err: errors.New("conn is closed")} //nolint:goerr113
-
-	errDeadlineExceeded   = &TimeoutError{Err: xerrors.Errorf("read/write timeout: %w", context.DeadlineExceeded)}
-	errInvalidContentType = &TemporaryError{Err: errors.New("invalid content type")} //nolint:goerr113
-
-	errBufferTooSmall               = &TemporaryError{Err: errors.New("buffer is too small")}                                        //nolint:goerr113
-	errContextUnsupported           = &TemporaryError{Err: errors.New("context is not supported for ExportKeyingMaterial")}          //nolint:goerr113
-	errHandshakeInProgress          = &TemporaryError{Err: errors.New("handshake is in progress")}                                   //nolint:goerr113
-	errReservedExportKeyingMaterial = &TemporaryError{Err: errors.New("ExportKeyingMaterial can not be used with a reserved label")} //nolint:goerr113
-	errApplicationDataEpochZero     = &TemporaryError{Err: errors.New("ApplicationData with epoch of 0")}                            //nolint:goerr113
-	errUnhandledContextType         = &TemporaryError{Err: errors.New("unhandled contentType")}                                      //nolint:goerr113
-
-	errCertificateVerifyNoCertificate    = &FatalError{Err: errors.New("client sent certificate verify but we have no certificate to verify")}                      //nolint:goerr113
-	errCipherSuiteNoIntersection         = &FatalError{Err: errors.New("client+server do not support any shared cipher suites")}                                    //nolint:goerr113
-	errClientCertificateNotVerified      = &FatalError{Err: errors.New("client sent certificate but did not verify it")}                                            //nolint:goerr113
-	errClientCertificateRequired         = &FatalError{Err: errors.New("server required client verification, but got none")}                                        //nolint:goerr113
-	errClientNoMatchingSRTPProfile       = &FatalError{Err: errors.New("server responded with SRTP Profile we do not support")}                                     //nolint:goerr113
-	errClientRequiredButNoServerEMS      = &FatalError{Err: errors.New("client required Extended Master Secret extension, but server does not support it")}         //nolint:goerr113
-	errCookieMismatch                    = &FatalError{Err: errors.New("client+server cookie does not match")}                                                      //nolint:goerr113
-	errIdentityNoPSK                     = &FatalError{Err: errors.New("PSK Identity Hint provided but PSK is nil")}                                                //nolint:goerr113
-	errInvalidCertificate                = &FatalError{Err: errors.New("no certificate provided")}                                                                  //nolint:goerr113
-	errInvalidCipherSuite                = &FatalError{Err: errors.New("invalid or unknown cipher suite")}                                                          //nolint:goerr113
-	errInvalidECDSASignature             = &FatalError{Err: errors.New("ECDSA signature contained zero or negative values")}                                        //nolint:goerr113
-	errInvalidPrivateKey                 = &FatalError{Err: errors.New("invalid private key type")}                                                                 //nolint:goerr113
-	errInvalidSignatureAlgorithm         = &FatalError{Err: errors.New("invalid signature algorithm")}                                                              //nolint:goerr113
-	errKeySignatureMismatch              = &FatalError{Err: errors.New("expected and actual key signature do not match")}                                           //nolint:goerr113
-	errNilNextConn                       = &FatalError{Err: errors.New("Conn can not be created with a nil nextConn")}                                              //nolint:goerr113
-	errNoAvailableCipherSuites           = &FatalError{Err: errors.New("connection can not be created, no CipherSuites satisfy this Config")}                       //nolint:goerr113
-	errNoAvailablePSKCipherSuite         = &FatalError{Err: errors.New("connection can not be created, pre-shared key present but no compatible CipherSuite")}      //nolint:goerr113
-	errNoAvailableCertificateCipherSuite = &FatalError{Err: errors.New("connection can not be created, certificate present but no compatible CipherSuite")}         //nolint:goerr113
-	errNoAvailableSignatureSchemes       = &FatalError{Err: errors.New("connection can not be created, no SignatureScheme satisfy this Config")}                    //nolint:goerr113
-	errNoCertificates                    = &FatalError{Err: errors.New("no certificates configured")}                                                               //nolint:goerr113
-	errNoConfigProvided                  = &FatalError{Err: errors.New("no config provided")}                                                                       //nolint:goerr113
-	errNoSupportedEllipticCurves         = &FatalError{Err: errors.New("client requested zero or more elliptic curves that are not supported by the server")}       //nolint:goerr113
-	errUnsupportedProtocolVersion        = &FatalError{Err: errors.New("unsupported protocol version")}                                                             //nolint:goerr113
-	errPSKAndIdentityMustBeSetForClient  = &FatalError{Err: errors.New("PSK and PSK Identity Hint must both be set for client")}                                    //nolint:goerr113
-	errRequestedButNoSRTPExtension       = &FatalError{Err: errors.New("SRTP support was requested but server did not respond with use_srtp extension")}            //nolint:goerr113
-	errServerNoMatchingSRTPProfile       = &FatalError{Err: errors.New("client requested SRTP but we have no matching profiles")}                                   //nolint:goerr113
-	errServerRequiredButNoClientEMS      = &FatalError{Err: errors.New("server requires the Extended Master Secret extension, but the client does not support it")} //nolint:goerr113
-	errVerifyDataMismatch                = &FatalError{Err: errors.New("expected and actual verify data does not match")}                                           //nolint:goerr113
-
-	errInvalidFlight                     = &InternalError{Err: errors.New("invalid flight number")}                           //nolint:goerr113
-	errKeySignatureGenerateUnimplemented = &InternalError{Err: errors.New("unable to generate key signature, unimplemented")} //nolint:goerr113
-	errKeySignatureVerifyUnimplemented   = &InternalError{Err: errors.New("unable to verify key signature, unimplemented")}   //nolint:goerr113
-	errLengthMismatch                    = &InternalError{Err: errors.New("data length and declared length do not match")}    //nolint:goerr113
-	errSequenceNumberOverflow            = &InternalError{Err: errors.New("sequence number overflow")}                        //nolint:goerr113
-	errInvalidFSMTransition              = &InternalError{Err: errors.New("invalid state machine transition")}                //nolint:goerr113
-)
-
-// FatalError indicates that the DTLS connection is no longer available.
-// It is mainly caused by wrong configuration of server or client.
-type FatalError = protocol.FatalError
-
-// InternalError indicates and internal error caused by the implementation, and the DTLS connection is no longer available.
-// It is mainly caused by bugs or tried to use unimplemented features.
-type InternalError = protocol.InternalError
-
-// TemporaryError indicates that the DTLS connection is still available, but the request was failed temporary.
-type TemporaryError = protocol.TemporaryError
-
-// TimeoutError indicates that the request was timed out.
-type TimeoutError = protocol.TimeoutError
-
-// HandshakeError indicates that the handshake failed.
-type HandshakeError = protocol.HandshakeError
-
-// invalidCipherSuite indicates an attempt at using an unsupported cipher suite.
-type invalidCipherSuite struct {
-	id CipherSuiteID
-}
-
-func (e *invalidCipherSuite) Error() string {
-	return fmt.Sprintf("CipherSuite with id(%d) is not valid", e.id)
-}
-
-func (e *invalidCipherSuite) Is(err error) bool {
-	if other, ok := err.(*invalidCipherSuite); ok {
-		return e.id == other.id
-	}
-	return false
-}
-
-// errAlert wraps DTLS alert notification as an error
-type errAlert struct {
-	*alert.Alert
-}
-
-func (e *errAlert) Error() string {
-	return fmt.Sprintf("alert: %s", e.Alert.String())
-}
-
-func (e *errAlert) IsFatalOrCloseNotify() bool {
-	return e.Level == alert.Fatal || e.Description == alert.CloseNotify
-}
-
-func (e *errAlert) Is(err error) bool {
-	if other, ok := err.(*errAlert); ok {
-		return e.Level == other.Level && e.Description == other.Description
-	}
-	return false
-}
-
-// netError translates an error from underlying Conn to corresponding net.Error.
-func netError(err error) error {
-	switch err {
-	case io.EOF, context.Canceled, context.DeadlineExceeded:
-		// Return io.EOF and context errors as is.
-		return err
-	}
-	switch e := err.(type) {
-	case (*net.OpError):
-		if se, ok := e.Err.(*os.SyscallError); ok {
-			if se.Timeout() {
-				return &TimeoutError{Err: err}
-			}
-			if isOpErrorTemporary(se) {
-				return &TemporaryError{Err: err}
-			}
-		}
-	case (net.Error):
-		return err
-	}
-	return &FatalError{Err: err}
-}
--- a/anylink/dtls-2.0.9/errors_errno.go
+++ b/anylink/dtls-2.0.9/errors_errno.go
@ -1,25 +0,0 @@
-// +build aix darwin dragonfly freebsd linux nacl nacljs netbsd openbsd solaris windows
-
-// For systems having syscall.Errno.
-// Update build targets by following command:
-// $ grep -R ECONN $(go env GOROOT)/src/syscall/zerrors_*.go \
-//     | tr "." "_" | cut -d"_" -f"2" | sort | uniq
-
-package dtls
-
-import (
-	"os"
-	"syscall"
-)
-
-func isOpErrorTemporary(err *os.SyscallError) bool {
-	if ne, ok := err.Err.(syscall.Errno); ok {
-		switch ne {
-		case syscall.ECONNREFUSED:
-			return true
-		default:
-			return false
-		}
-	}
-	return false
-}
--- a/anylink/dtls-2.0.9/errors_errno_test.go
+++ b/anylink/dtls-2.0.9/errors_errno_test.go
@ -1,41 +0,0 @@
-// +build aix darwin dragonfly freebsd linux nacl nacljs netbsd openbsd solaris windows
-
-// For systems having syscall.Errno.
-// The build target must be same as errors_errno.go.
-
-package dtls
-
-import (
-	"net"
-	"testing"
-)
-
-func TestErrorsTemporary(t *testing.T) {
-	addrListen, errListen := net.ResolveUDPAddr("udp", "localhost:0")
-	if errListen != nil {
-		t.Fatalf("Unexpected error: %v", errListen)
-	}
-	// Server is not listening.
-	conn, errDial := net.DialUDP("udp", nil, addrListen)
-	if errDial != nil {
-		t.Fatalf("Unexpected error: %v", errDial)
-	}
-
-	_, _ = conn.Write([]byte{0x00}) // trigger
-	_, err := conn.Read(make([]byte, 10))
-	_ = conn.Close()
-
-	if err == nil {
-		t.Skip("ECONNREFUSED is not set by system")
-	}
-	ne, ok := netError(err).(net.Error)
-	if !ok {
-		t.Fatalf("netError must return net.Error")
-	}
-	if ne.Timeout() {
-		t.Errorf("%v must not be timeout error", err)
-	}
-	if !ne.Temporary() {
-		t.Errorf("%v must be temporary error", err)
-	}
-}
--- a/anylink/dtls-2.0.9/errors_noerrno.go
+++ b/anylink/dtls-2.0.9/errors_noerrno.go
@ -1,14 +0,0 @@
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!nacl,!nacljs,!netbsd,!openbsd,!solaris,!windows
-
-// For systems without syscall.Errno.
-// Build targets must be inverse of errors_errno.go
-
-package dtls
-
-import (
-	"os"
-)
-
-func isOpErrorTemporary(err *os.SyscallError) bool {
-	return false
-}
--- a/anylink/dtls-2.0.9/errors_test.go
+++ b/anylink/dtls-2.0.9/errors_test.go
@ -1,85 +0,0 @@
-package dtls
-
-import (
-	"errors"
-	"fmt"
-	"net"
-	"testing"
-
-	"golang.org/x/xerrors"
-)
-
-var errExample = errors.New("an example error")
-
-func TestErrorUnwrap(t *testing.T) {
-	cases := []struct {
-		err          error
-		errUnwrapped []error
-	}{
-		{
-			&FatalError{Err: errExample},
-			[]error{errExample},
-		},
-		{
-			&TemporaryError{Err: errExample},
-			[]error{errExample},
-		},
-		{
-			&InternalError{Err: errExample},
-			[]error{errExample},
-		},
-		{
-			&TimeoutError{Err: errExample},
-			[]error{errExample},
-		},
-		{
-			&HandshakeError{Err: errExample},
-			[]error{errExample},
-		},
-	}
-	for _, c := range cases {
-		c := c
-		t.Run(fmt.Sprintf("%T", c.err), func(t *testing.T) {
-			err := c.err
-			for _, unwrapped := range c.errUnwrapped {
-				e := xerrors.Unwrap(err)
-				if !errors.Is(e, unwrapped) {
-					t.Errorf("Unwrapped error is expected to be '%v', got '%v'", unwrapped, e)
-				}
-			}
-		})
-	}
-}
-
-func TestErrorNetError(t *testing.T) {
-	cases := []struct {
-		err                error
-		str                string
-		timeout, temporary bool
-	}{
-		{&FatalError{Err: errExample}, "dtls fatal: an example error", false, false},
-		{&TemporaryError{Err: errExample}, "dtls temporary: an example error", false, true},
-		{&InternalError{Err: errExample}, "dtls internal: an example error", false, false},
-		{&TimeoutError{Err: errExample}, "dtls timeout: an example error", true, true},
-		{&HandshakeError{Err: errExample}, "handshake error: an example error", false, false},
-		{&HandshakeError{Err: &TimeoutError{Err: errExample}}, "handshake error: dtls timeout: an example error", true, true},
-	}
-	for _, c := range cases {
-		c := c
-		t.Run(fmt.Sprintf("%T", c.err), func(t *testing.T) {
-			ne, ok := c.err.(net.Error)
-			if !ok {
-				t.Fatalf("%T doesn't implement net.Error", c.err)
-			}
-			if ne.Timeout() != c.timeout {
-				t.Errorf("%T.Timeout() should be %v", c.err, c.timeout)
-			}
-			if ne.Temporary() != c.temporary {
-				t.Errorf("%T.Temporary() should be %v", c.err, c.temporary)
-			}
-			if ne.Error() != c.str {
-				t.Errorf("%T.Error() should be %v", c.err, c.str)
-			}
-		})
-	}
-}
--- a/anylink/dtls-2.0.9/examples/certificates/README.md
+++ b/anylink/dtls-2.0.9/examples/certificates/README.md
@ -1,26 +0,0 @@
-# Certificates
-
-The certificates in for the examples are generated using the commands shown below.
-
-Note that this was run on OpenSSL 1.1.1d, of which the arguments can be found in the [OpenSSL Manpages](https://www.openssl.org/docs/man1.1.1/man1), and is not guaranteed to work on different OpenSSL versions.
-
-```shell
-# Extensions required for certificate validation.
-$ EXTFILE='extfile.conf'
-$ echo 'subjectAltName = IP:127.0.0.1\nbasicConstraints = critical,CA:true' > "${EXTFILE}"
-
-# Server.
-$ SERVER_NAME='server'
-$ openssl ecparam -name prime256v1 -genkey -noout -out "${SERVER_NAME}.pem"
-$ openssl req -key "${SERVER_NAME}.pem" -new -sha256 -subj '/C=NL' -out "${SERVER_NAME}.csr"
-$ openssl x509 -req -in "${SERVER_NAME}.csr" -extfile "${EXTFILE}" -days 365 -signkey "${SERVER_NAME}.pem" -sha256 -out "${SERVER_NAME}.pub.pem"
-
-# Client.
-$ CLIENT_NAME='client'
-$ openssl ecparam -name prime256v1 -genkey -noout -out "${CLIENT_NAME}.pem"
-$ openssl req -key "${CLIENT_NAME}.pem" -new -sha256 -subj '/C=NL' -out "${CLIENT_NAME}.csr"
-$ openssl x509 -req -in "${CLIENT_NAME}.csr" -extfile "${EXTFILE}" -days 365 -CA "${SERVER_NAME}.pub.pem" -CAkey "${SERVER_NAME}.pem" -set_serial '0xabcd' -sha256 -out "${CLIENT_NAME}.pub.pem"
-
-# Cleanup.
-$ rm "${EXTFILE}" "${SERVER_NAME}.csr" "${CLIENT_NAME}.csr"
-```
--- a/anylink/dtls-2.0.9/examples/certificates/client.pem
+++ b/anylink/dtls-2.0.9/examples/certificates/client.pem
@ -1,5 +0,0 @@
-----BEGIN EC PRIVATE KEY-----
-MHcCAQEEIGOO78dEAcepxdUIeDzC28jMcFrJr2q7x+UdhgtJ/RS3oAoGCCqGSM49
-AwEHoUQDQgAEGLSNxlkJ9mETKI2Hogq3Cyh06pJKA1YMgcKqYKS6yQQlvvk5rU88
-+RojFPgXJukymhfIJmw4eGxxEMSjuEZY7w==
-----END EC PRIVATE KEY-----
--- a/anylink/dtls-2.0.9/examples/certificates/client.pub.pem
+++ b/anylink/dtls-2.0.9/examples/certificates/client.pub.pem
@ -1,9 +0,0 @@
-----BEGIN CERTIFICATE-----
-MIIBLTCB1aADAgECAgMAq80wCgYIKoZIzj0EAwIwDTELMAkGA1UEBhMCTkwwHhcN
-MjAwMzIwMDk0NjQ0WhcNMjEwMzIwMDk0NjQ0WjANMQswCQYDVQQGEwJOTDBZMBMG
-ByqGSM49AgEGCCqGSM49AwEHA0IABBi0jcZZCfZhEyiNh6IKtwsodOqSSgNWDIHC
-qmCkuskEJb75Oa1PPPkaIxT4FybpMpoXyCZsOHhscRDEo7hGWO+jJDAiMA8GA1Ud
-EQQIMAaHBH8AAAEwDwYDVR0TAQH/BAUwAwEB/zAKBggqhkjOPQQDAgNHADBEAiBx
-sIkcADN9E60veZOFOeANaRWAiQaLWZfUxqkOmfHztQIgI2CfHMjDQwJZFh35HvFs
-NOPJj8wxFhqR5pqMF23cgOY=
-----END CERTIFICATE-----
--- a/anylink/dtls-2.0.9/examples/certificates/server.pem
+++ b/anylink/dtls-2.0.9/examples/certificates/server.pem
@ -1,5 +0,0 @@
-----BEGIN EC PRIVATE KEY-----
-MHcCAQEEIDT8Xyx5RpPP+98ulYZKsvKIVdBUJug/L9H2M8JThv+GoAoGCCqGSM49
-AwEHoUQDQgAE6Wf0qQqIb5G7g51P83Dh1Yst52kyntGYz1Bt6S7crpmQFs9ZRZMy
-bJ6MGIwGcVBMgoL3pfxDKdZ3mnzmoibU0w==
-----END EC PRIVATE KEY-----
--- a/anylink/dtls-2.0.9/examples/certificates/server.pub.pem
+++ b/anylink/dtls-2.0.9/examples/certificates/server.pub.pem
@ -1,9 +0,0 @@
-----BEGIN CERTIFICATE-----
-MIIBPzCB5qADAgECAhRtzyVTL+9D0KHfbcKYeKckpLVRmTAKBggqhkjOPQQDAjAN
-MQswCQYDVQQGEwJOTDAeFw0yMDAzMjAwOTQ2NDRaFw0yMTAzMjAwOTQ2NDRaMA0x
-CzAJBgNVBAYTAk5MMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE6Wf0qQqIb5G7
-g51P83Dh1Yst52kyntGYz1Bt6S7crpmQFs9ZRZMybJ6MGIwGcVBMgoL3pfxDKdZ3
-mnzmoibU06MkMCIwDwYDVR0RBAgwBocEfwAAATAPBgNVHRMBAf8EBTADAQH/MAoG
-CCqGSM49BAMCA0gAMEUCIQD000SU+klkNLGvHZcMYNVkCFsImnGKIqPMy3LELSiF
-0gIgSGIFkNEIAyNxn44CXZJu3piyz1ouK2fLefDJMYfcXgM=
-----END CERTIFICATE-----
--- a/anylink/dtls-2.0.9/examples/dial/psk/main.go
+++ b/anylink/dtls-2.0.9/examples/dial/psk/main.go
@ -1,45 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		PSK: func(hint []byte) ([]byte, error) {
-			fmt.Printf("Server's hint: %s \n", hint)
-			return []byte{0xAB, 0xC1, 0x23}, nil
-		},
-		PSKIdentityHint:      []byte("Pion DTLS Server"),
-		CipherSuites:         []dtls.CipherSuiteID{dtls.TLS_PSK_WITH_AES_128_CCM_8},
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-	}
-
-	// Connect to a DTLS server
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-	dtlsConn, err := dtls.DialWithContext(ctx, "udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(dtlsConn.Close())
-	}()
-
-	fmt.Println("Connected; type 'exit' to shutdown gracefully")
-
-	// Simulate a chat session
-	util.Chat(dtlsConn)
-}
--- a/anylink/dtls-2.0.9/examples/dial/selfsign/main.go
+++ b/anylink/dtls-2.0.9/examples/dial/selfsign/main.go
@ -1,47 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/tls"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	// Generate a certificate and private key to secure the connection
-	certificate, genErr := selfsign.GenerateSelfSigned()
-	util.Check(genErr)
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		Certificates:         []tls.Certificate{certificate},
-		InsecureSkipVerify:   true,
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-	}
-
-	// Connect to a DTLS server
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-	dtlsConn, err := dtls.DialWithContext(ctx, "udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(dtlsConn.Close())
-	}()
-
-	fmt.Println("Connected; type 'exit' to shutdown gracefully")
-
-	// Simulate a chat session
-	util.Chat(dtlsConn)
-}
--- a/anylink/dtls-2.0.9/examples/dial/verify/main.go
+++ b/anylink/dtls-2.0.9/examples/dial/verify/main.go
@ -1,54 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/tls"
-	"crypto/x509"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	certificate, err := util.LoadKeyAndCertificate("examples/certificates/client.pem",
-		"examples/certificates/client.pub.pem")
-	util.Check(err)
-
-	rootCertificate, err := util.LoadCertificate("examples/certificates/server.pub.pem")
-	util.Check(err)
-	certPool := x509.NewCertPool()
-	cert, err := x509.ParseCertificate(rootCertificate.Certificate[0])
-	util.Check(err)
-	certPool.AddCert(cert)
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		Certificates:         []tls.Certificate{*certificate},
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-		RootCAs:              certPool,
-	}
-
-	// Connect to a DTLS server
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-	defer cancel()
-	dtlsConn, err := dtls.DialWithContext(ctx, "udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(dtlsConn.Close())
-	}()
-
-	fmt.Println("Connected; type 'exit' to shutdown gracefully")
-
-	// Simulate a chat session
-	util.Chat(dtlsConn)
-}
--- a/anylink/dtls-2.0.9/examples/listen/psk/main.go
+++ b/anylink/dtls-2.0.9/examples/listen/psk/main.go
@ -1,72 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	// Create parent context to cleanup handshaking connections on exit.
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		PSK: func(hint []byte) ([]byte, error) {
-			fmt.Printf("Client's hint: %s \n", hint)
-			return []byte{0xAB, 0xC1, 0x23}, nil
-		},
-		PSKIdentityHint:      []byte("Pion DTLS Client"),
-		CipherSuites:         []dtls.CipherSuiteID{dtls.TLS_PSK_WITH_AES_128_CCM_8},
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-		// Create timeout context for accepted connection.
-		ConnectContextMaker: func() (context.Context, func()) {
-			return context.WithTimeout(ctx, 30*time.Second)
-		},
-	}
-
-	// Connect to a DTLS server
-	listener, err := dtls.Listen("udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(listener.Close())
-	}()
-
-	fmt.Println("Listening")
-
-	// Simulate a chat session
-	hub := util.NewHub()
-
-	go func() {
-		for {
-			// Wait for a connection.
-			conn, err := listener.Accept()
-			util.Check(err)
-			// defer conn.Close() // TODO: graceful shutdown
-
-			// `conn` is of type `net.Conn` but may be casted to `dtls.Conn`
-			// using `dtlsConn := conn.(*dtls.Conn)` in order to to expose
-			// functions like `ConnectionState` etc.
-
-			// Register the connection with the chat hub
-			if err == nil {
-				hub.Register(conn)
-			}
-		}
-	}()
-
-	// Start chatting
-	hub.Chat()
-}
--- a/anylink/dtls-2.0.9/examples/listen/selfsign/main.go
+++ b/anylink/dtls-2.0.9/examples/listen/selfsign/main.go
@ -1,73 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/tls"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-	"github.com/pion/dtls/v2/pkg/crypto/selfsign"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	// Generate a certificate and private key to secure the connection
-	certificate, genErr := selfsign.GenerateSelfSigned()
-	util.Check(genErr)
-
-	// Create parent context to cleanup handshaking connections on exit.
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		Certificates:         []tls.Certificate{certificate},
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-		// Create timeout context for accepted connection.
-		ConnectContextMaker: func() (context.Context, func()) {
-			return context.WithTimeout(ctx, 30*time.Second)
-		},
-	}
-
-	// Connect to a DTLS server
-	listener, err := dtls.Listen("udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(listener.Close())
-	}()
-
-	fmt.Println("Listening")
-
-	// Simulate a chat session
-	hub := util.NewHub()
-
-	go func() {
-		for {
-			// Wait for a connection.
-			conn, err := listener.Accept()
-			util.Check(err)
-			// defer conn.Close() // TODO: graceful shutdown
-
-			// `conn` is of type `net.Conn` but may be casted to `dtls.Conn`
-			// using `dtlsConn := conn.(*dtls.Conn)` in order to to expose
-			// functions like `ConnectionState` etc.
-
-			// Register the connection with the chat hub
-			if err == nil {
-				hub.Register(conn)
-			}
-		}
-	}()
-
-	// Start chatting
-	hub.Chat()
-}
--- a/anylink/dtls-2.0.9/examples/listen/verify/main.go
+++ b/anylink/dtls-2.0.9/examples/listen/verify/main.go
@ -1,80 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/tls"
-	"crypto/x509"
-	"fmt"
-	"net"
-	"time"
-
-	"github.com/pion/dtls/v2"
-	"github.com/pion/dtls/v2/examples/util"
-)
-
-func main() {
-	// Prepare the IP to connect to
-	addr := &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 4444}
-
-	// Create parent context to cleanup handshaking connections on exit.
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	//
-	// Everything below is the pion-DTLS API! Thanks for using it ❤️.
-	//
-
-	certificate, err := util.LoadKeyAndCertificate("examples/certificates/server.pem",
-		"examples/certificates/server.pub.pem")
-	util.Check(err)
-
-	rootCertificate, err := util.LoadCertificate("examples/certificates/server.pub.pem")
-	util.Check(err)
-	certPool := x509.NewCertPool()
-	cert, err := x509.ParseCertificate(rootCertificate.Certificate[0])
-	util.Check(err)
-	certPool.AddCert(cert)
-
-	// Prepare the configuration of the DTLS connection
-	config := &dtls.Config{
-		Certificates:         []tls.Certificate{*certificate},
-		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
-		ClientAuth:           dtls.RequireAndVerifyClientCert,
-		ClientCAs:            certPool,
-		// Create timeout context for accepted connection.
-		ConnectContextMaker: func() (context.Context, func()) {
-			return context.WithTimeout(ctx, 30*time.Second)
-		},
-	}
-
-	// Connect to a DTLS server
-	listener, err := dtls.Listen("udp", addr, config)
-	util.Check(err)
-	defer func() {
-		util.Check(listener.Close())
-	}()
-
-	fmt.Println("Listening")
-
-	// Simulate a chat session
-	hub := util.NewHub()
-
-	go func() {
-		for {
-			// Wait for a connection.
-			conn, err := listener.Accept()
-			util.Check(err)
-			// defer conn.Close() // TODO: graceful shutdown
-
-			// `conn` is of type `net.Conn` but may be casted to `dtls.Conn`
-			// using `dtlsConn := conn.(*dtls.Conn)` in order to to expose
-			// functions like `ConnectionState` etc.
-
-			// Register the connection with the chat hub
-			hub.Register(conn)
-		}
-	}()
-
-	// Start chatting
-	hub.Chat()
-}
--- a/anylink/dtls-2.0.9/examples/util/hub.go
+++ b/anylink/dtls-2.0.9/examples/util/hub.go
@ -1,80 +0,0 @@
-package util
-
-import (
-	"bufio"
-	"fmt"
-	"net"
-	"os"
-	"strings"
-	"sync"
-)
-
-// Hub is a helper to handle one to many chat
-type Hub struct {
-	conns map[string]net.Conn
-	lock  sync.RWMutex
-}
-
-// NewHub builds a new hub
-func NewHub() *Hub {
-	return &Hub{conns: make(map[string]net.Conn)}
-}
-
-// Register adds a new conn to the Hub
-func (h *Hub) Register(conn net.Conn) {
-	fmt.Printf("Connected to %s\n", conn.RemoteAddr())
-	h.lock.Lock()
-	defer h.lock.Unlock()
-
-	h.conns[conn.RemoteAddr().String()] = conn
-
-	go h.readLoop(conn)
-}
-
-func (h *Hub) readLoop(conn net.Conn) {
-	b := make([]byte, bufSize)
-	for {
-		n, err := conn.Read(b)
-		if err != nil {
-			h.unregister(conn)
-			return
-		}
-		fmt.Printf("Got message: %s\n", string(b[:n]))
-	}
-}
-
-func (h *Hub) unregister(conn net.Conn) {
-	h.lock.Lock()
-	defer h.lock.Unlock()
-	delete(h.conns, conn.RemoteAddr().String())
-	err := conn.Close()
-	if err != nil {
-		fmt.Println("Failed to disconnect", conn.RemoteAddr(), err)
-	} else {
-		fmt.Println("Disconnected ", conn.RemoteAddr())
-	}
-}
-
-func (h *Hub) broadcast(msg []byte) {
-	h.lock.RLock()
-	defer h.lock.RUnlock()
-	for _, conn := range h.conns {
-		_, err := conn.Write(msg)
-		if err != nil {
-			fmt.Printf("Failed to write message to %s: %v\n", conn.RemoteAddr(), err)
-		}
-	}
-}
-
-// Chat starts the stdin readloop to dispatch messages to the hub
-func (h *Hub) Chat() {
-	reader := bufio.NewReader(os.Stdin)
-	for {
-		msg, err := reader.ReadString('\n')
-		Check(err)
-		if strings.TrimSpace(msg) == "exit" {
-			return
-		}
-		h.broadcast([]byte(msg))
-	}
-}
--- a/anylink/dtls-2.0.9/examples/util/util.go
+++ b/anylink/dtls-2.0.9/examples/util/util.go
@ -1,154 +0,0 @@
-// Package util provides auxiliary utilities used in examples
-package util
-
-import (
-	"bufio"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net"
-	"os"
-	"path/filepath"
-	"strings"
-)
-
-const bufSize = 8192
-
-var (
-	errBlockIsNotPrivateKey  = errors.New("block is not a private key, unable to load key")
-	errUnknownKeyTime        = errors.New("unknown key time in PKCS#8 wrapping, unable to load key")
-	errNoPrivateKeyFound     = errors.New("no private key found, unable to load key")
-	errBlockIsNotCertificate = errors.New("block is not a certificate, unable to load certificates")
-	errNoCertificateFound    = errors.New("no certificate found, unable to load certificates")
-)
-
-// Chat simulates a simple text chat session over the connection
-func Chat(conn io.ReadWriter) {
-	go func() {
-		b := make([]byte, bufSize)
-
-		for {
-			n, err := conn.Read(b)
-			Check(err)
-			fmt.Printf("Got message: %s\n", string(b[:n]))
-		}
-	}()
-
-	reader := bufio.NewReader(os.Stdin)
-
-	for {
-		text, err := reader.ReadString('\n')
-		Check(err)
-
-		if strings.TrimSpace(text) == "exit" {
-			return
-		}
-
-		_, err = conn.Write([]byte(text))
-		Check(err)
-	}
-}
-
-// Check is a helper to throw errors in the examples
-func Check(err error) {
-	switch e := err.(type) {
-	case nil:
-	case (net.Error):
-		if e.Temporary() {
-			fmt.Printf("Warning: %v\n", err)
-			return
-		}
-
-		fmt.Printf("net.Error: %v\n", err)
-		panic(err)
-	default:
-		fmt.Printf("error: %v\n", err)
-		panic(err)
-	}
-}
-
-// LoadKeyAndCertificate reads certificates or key from file
-func LoadKeyAndCertificate(keyPath string, certificatePath string) (*tls.Certificate, error) {
-	privateKey, err := LoadKey(keyPath)
-	if err != nil {
-		return nil, err
-	}
-
-	certificate, err := LoadCertificate(certificatePath)
-	if err != nil {
-		return nil, err
-	}
-
-	certificate.PrivateKey = privateKey
-
-	return certificate, nil
-}
-
-// LoadKey Load/read key from file
-func LoadKey(path string) (crypto.PrivateKey, error) {
-	rawData, err := ioutil.ReadFile(filepath.Clean(path))
-	if err != nil {
-		return nil, err
-	}
-
-	block, _ := pem.Decode(rawData)
-	if block == nil || !strings.HasSuffix(block.Type, "PRIVATE KEY") {
-		return nil, errBlockIsNotPrivateKey
-	}
-
-	if key, err := x509.ParsePKCS1PrivateKey(block.Bytes); err == nil {
-		return key, nil
-	}
-
-	if key, err := x509.ParsePKCS8PrivateKey(block.Bytes); err == nil {
-		switch key := key.(type) {
-		case *rsa.PrivateKey, *ecdsa.PrivateKey:
-			return key, nil
-		default:
-			return nil, errUnknownKeyTime
-		}
-	}
-
-	if key, err := x509.ParseECPrivateKey(block.Bytes); err == nil {
-		return key, nil
-	}
-
-	return nil, errNoPrivateKeyFound
-}
-
-// LoadCertificate Load/read certificate(s) from file
-func LoadCertificate(path string) (*tls.Certificate, error) {
-	rawData, err := ioutil.ReadFile(filepath.Clean(path))
-	if err != nil {
-		return nil, err
-	}
-
-	var certificate tls.Certificate
-
-	for {
-		block, rest := pem.Decode(rawData)
-		if block == nil {
-			break
-		}
-
-		if block.Type != "CERTIFICATE" {
-			return nil, errBlockIsNotCertificate
-		}
-
-		certificate.Certificate = append(certificate.Certificate, block.Bytes)
-		rawData = rest
-	}
-
-	if len(certificate.Certificate) == 0 {
-		return nil, errNoCertificateFound
-	}
-
-	return &certificate, nil
-}
--- a/anylink/dtls-2.0.9/flight.go
+++ b/anylink/dtls-2.0.9/flight.go
@ -1,75 +0,0 @@
-package dtls
-
-/*
-  DTLS messages are grouped into a series of message flights, according
-  to the diagrams below.  Although each flight of messages may consist
-  of a number of messages, they should be viewed as monolithic for the
-  purpose of timeout and retransmission.
-  https://tools.ietf.org/html/rfc4347#section-4.2.4
-  Client                                          Server
-  ------                                          ------
-                                      Waiting                 Flight 0
-
-  ClientHello             -------->                           Flight 1
-
-                          <-------    HelloVerifyRequest      Flight 2
-
-  ClientHello              -------->                           Flight 3
-
-                                             ServerHello    \
-                                            Certificate*     \
-                                      ServerKeyExchange*      Flight 4
-                                     CertificateRequest*     /
-                          <--------      ServerHelloDone    /
-
-  Certificate*                                              \
-  ClientKeyExchange                                          \
-  CertificateVerify*                                          Flight 5
-  [ChangeCipherSpec]                                         /
-  Finished                -------->                         /
-
-                                      [ChangeCipherSpec]    \ Flight 6
-                          <--------             Finished    /
-
-*/
-
-type flightVal uint8
-
-const (
-	flight0 flightVal = iota + 1
-	flight1
-	flight2
-	flight3
-	flight4
-	flight5
-	flight6
-)
-
-func (f flightVal) String() string {
-	switch f {
-	case flight0:
-		return "Flight 0"
-	case flight1:
-		return "Flight 1"
-	case flight2:
-		return "Flight 2"
-	case flight3:
-		return "Flight 3"
-	case flight4:
-		return "Flight 4"
-	case flight5:
-		return "Flight 5"
-	case flight6:
-		return "Flight 6"
-	default:
-		return "Invalid Flight"
-	}
-}
-
-func (f flightVal) isLastSendFlight() bool {
-	return f == flight6
-}
-
-func (f flightVal) isLastRecvFlight() bool {
-	return f == flight5
-}
--- a/anylink/dtls-2.0.9/flight0handler.go
+++ b/anylink/dtls-2.0.9/flight0handler.go
@ -1,102 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"crypto/rand"
-
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/extension"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-)
-
-func flight0Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) {
-	seq, msgs, ok := cache.fullPullMap(0,
-		handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-	state.handshakeRecvSequence = seq
-
-	var clientHello *handshake.MessageClientHello
-
-	// Validate type
-	if clientHello, ok = msgs[handshake.TypeClientHello].(*handshake.MessageClientHello); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-
-	if !clientHello.Version.Equal(protocol.Version1_2) {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.ProtocolVersion}, errUnsupportedProtocolVersion
-	}
-
-	state.remoteRandom = clientHello.Random
-
-	cipherSuites := []CipherSuite{}
-	for _, id := range clientHello.CipherSuiteIDs {
-		if c := cipherSuiteForID(CipherSuiteID(id), cfg.customCipherSuites); c != nil {
-			cipherSuites = append(cipherSuites, c)
-		}
-	}
-
-	if state.cipherSuite, ok = findMatchingCipherSuite(cipherSuites, cfg.localCipherSuites); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errCipherSuiteNoIntersection
-	}
-
-	for _, val := range clientHello.Extensions {
-		switch e := val.(type) {
-		case *extension.SupportedEllipticCurves:
-			if len(e.EllipticCurves) == 0 {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errNoSupportedEllipticCurves
-			}
-			state.namedCurve = e.EllipticCurves[0]
-		case *extension.UseSRTP:
-			profile, ok := findMatchingSRTPProfile(e.ProtectionProfiles, cfg.localSRTPProtectionProfiles)
-			if !ok {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errServerNoMatchingSRTPProfile
-			}
-			state.srtpProtectionProfile = profile
-		case *extension.UseExtendedMasterSecret:
-			if cfg.extendedMasterSecret != DisableExtendedMasterSecret {
-				state.extendedMasterSecret = true
-			}
-		case *extension.ServerName:
-			state.serverName = e.ServerName // remote server name
-		}
-	}
-
-	if cfg.extendedMasterSecret == RequireExtendedMasterSecret && !state.extendedMasterSecret {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errServerRequiredButNoClientEMS
-	}
-
-	if state.localKeypair == nil {
-		var err error
-		state.localKeypair, err = elliptic.GenerateKeypair(state.namedCurve)
-		if err != nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, err
-		}
-	}
-
-	return flight2, nil, nil
-}
-
-func flight0Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	// Initialize
-	state.cookie = make([]byte, cookieLength)
-	if _, err := rand.Read(state.cookie); err != nil {
-		return nil, nil, err
-	}
-
-	var zeroEpoch uint16
-	state.localEpoch.Store(zeroEpoch)
-	state.remoteEpoch.Store(zeroEpoch)
-	state.namedCurve = defaultNamedCurve
-
-	if err := state.localRandom.Populate(); err != nil {
-		return nil, nil, err
-	}
-
-	return nil, nil, nil
-}
--- a/anylink/dtls-2.0.9/flight1handler.go
+++ b/anylink/dtls-2.0.9/flight1handler.go
@ -1,112 +0,0 @@
-package dtls
-
-import (
-	"context"
-
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/extension"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight1Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) {
-	// HelloVerifyRequest can be skipped by the server,
-	// so allow ServerHello during flight1 also
-	seq, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence,
-		handshakeCachePullRule{handshake.TypeHelloVerifyRequest, cfg.initialEpoch, false, true},
-		handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, true},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-
-	if _, ok := msgs[handshake.TypeServerHello]; ok {
-		// Flight1 and flight2 were skipped.
-		// Parse as flight3.
-		return flight3Parse(ctx, c, state, cache, cfg)
-	}
-
-	if h, ok := msgs[handshake.TypeHelloVerifyRequest].(*handshake.MessageHelloVerifyRequest); ok {
-		// DTLS 1.2 clients must not assume that the server will use the protocol version
-		// specified in HelloVerifyRequest message. RFC 6347 Section 4.2.1
-		if !h.Version.Equal(protocol.Version1_0) && !h.Version.Equal(protocol.Version1_2) {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.ProtocolVersion}, errUnsupportedProtocolVersion
-		}
-		state.cookie = append([]byte{}, h.Cookie...)
-		state.handshakeRecvSequence = seq
-		return flight3, nil, nil
-	}
-
-	return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-}
-
-func flight1Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	var zeroEpoch uint16
-	state.localEpoch.Store(zeroEpoch)
-	state.remoteEpoch.Store(zeroEpoch)
-	state.namedCurve = defaultNamedCurve
-	state.cookie = nil
-
-	if err := state.localRandom.Populate(); err != nil {
-		return nil, nil, err
-	}
-
-	extensions := []extension.Extension{
-		&extension.SupportedSignatureAlgorithms{
-			SignatureHashAlgorithms: cfg.localSignatureSchemes,
-		},
-		&extension.RenegotiationInfo{
-			RenegotiatedConnection: 0,
-		},
-	}
-	if cfg.localPSKCallback == nil {
-		extensions = append(extensions, []extension.Extension{
-			&extension.SupportedEllipticCurves{
-				EllipticCurves: []elliptic.Curve{elliptic.X25519, elliptic.P256, elliptic.P384},
-			},
-			&extension.SupportedPointFormats{
-				PointFormats: []elliptic.CurvePointFormat{elliptic.CurvePointFormatUncompressed},
-			},
-		}...)
-	}
-
-	if len(cfg.localSRTPProtectionProfiles) > 0 {
-		extensions = append(extensions, &extension.UseSRTP{
-			ProtectionProfiles: cfg.localSRTPProtectionProfiles,
-		})
-	}
-
-	if cfg.extendedMasterSecret == RequestExtendedMasterSecret ||
-		cfg.extendedMasterSecret == RequireExtendedMasterSecret {
-		extensions = append(extensions, &extension.UseExtendedMasterSecret{
-			Supported: true,
-		})
-	}
-
-	if len(cfg.serverName) > 0 {
-		extensions = append(extensions, &extension.ServerName{ServerName: cfg.serverName})
-	}
-
-	return []*packet{
-		{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageClientHello{
-						Version:            protocol.Version1_2,
-						Cookie:             state.cookie,
-						Random:             state.localRandom,
-						CipherSuiteIDs:     cipherSuiteIDs(cfg.localCipherSuites),
-						CompressionMethods: defaultCompressionMethods(),
-						Extensions:         extensions,
-					},
-				},
-			},
-		},
-	}, nil, nil
-}
--- a/anylink/dtls-2.0.9/flight2handler.go
+++ b/anylink/dtls-2.0.9/flight2handler.go
@ -1,78 +0,0 @@
-package dtls
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight2Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) {
-	seq, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence,
-		handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-	)
-	if !ok {
-		// Client may retransmit the first ClientHello when HelloVerifyRequest is dropped.
-		// Parse as flight 0 in this case.
-		return flight0Parse(ctx, c, state, cache, cfg)
-	}
-	state.handshakeRecvSequence = seq
-
-	var clientHello *handshake.MessageClientHello
-
-	// Validate type
-	if clientHello, ok = msgs[handshake.TypeClientHello].(*handshake.MessageClientHello); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-
-	if !clientHello.Version.Equal(protocol.Version1_2) {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.ProtocolVersion}, errUnsupportedProtocolVersion
-	}
-
-	if len(clientHello.Cookie) == 0 {
-		return 0, nil, nil
-	}
-	if !bytes.Equal(state.cookie, clientHello.Cookie) {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.AccessDenied}, errCookieMismatch
-	}
-
-	// TODO 添加 CiscoCompat 支持
-	if cfg.localCiscoCompatCallback != nil {
-		var err error
-		state.SessionID = clientHello.SessionID
-		if len(state.SessionID) == 0 {
-			err = fmt.Errorf("clientHello SessionID is nil")
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, err
-		}
-
-		state.masterSecret, err = cfg.localCiscoCompatCallback(state.SessionID)
-		if err != nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, err
-		}
-	}
-
-	return flight4, nil, nil
-}
-
-func flight2Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	state.handshakeSendSequence = 0
-	return []*packet{
-		{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageHelloVerifyRequest{
-						Version: protocol.Version1_2,
-						Cookie:  state.cookie,
-					},
-				},
-			},
-		},
-	}, nil, nil
-}
--- a/anylink/dtls-2.0.9/flight3handler.go
+++ b/anylink/dtls-2.0.9/flight3handler.go
@ -1,194 +0,0 @@
-package dtls
-
-import (
-	"context"
-
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/crypto/prf"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/extension"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight3Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) { //nolint:gocognit
-	// Clients may receive multiple HelloVerifyRequest messages with different cookies.
-	// Clients SHOULD handle this by sending a new ClientHello with a cookie in response
-	// to the new HelloVerifyRequest. RFC 6347 Section 4.2.1
-	seq, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence,
-		handshakeCachePullRule{handshake.TypeHelloVerifyRequest, cfg.initialEpoch, false, true},
-	)
-	if ok {
-		if h, msgOk := msgs[handshake.TypeHelloVerifyRequest].(*handshake.MessageHelloVerifyRequest); msgOk {
-			// DTLS 1.2 clients must not assume that the server will use the protocol version
-			// specified in HelloVerifyRequest message. RFC 6347 Section 4.2.1
-			if !h.Version.Equal(protocol.Version1_0) && !h.Version.Equal(protocol.Version1_2) {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.ProtocolVersion}, errUnsupportedProtocolVersion
-			}
-			state.cookie = append([]byte{}, h.Cookie...)
-			state.handshakeRecvSequence = seq
-			return flight3, nil, nil
-		}
-	}
-
-	if cfg.localPSKCallback != nil {
-		seq, msgs, ok = cache.fullPullMap(state.handshakeRecvSequence,
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, true},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-		)
-	} else {
-		seq, msgs, ok = cache.fullPullMap(state.handshakeRecvSequence,
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, true},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, true},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-		)
-	}
-	if !ok {
-		// Don't have enough messages. Keep reading
-		return 0, nil, nil
-	}
-	state.handshakeRecvSequence = seq
-
-	if h, ok := msgs[handshake.TypeServerHello].(*handshake.MessageServerHello); ok {
-		if !h.Version.Equal(protocol.Version1_2) {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.ProtocolVersion}, errUnsupportedProtocolVersion
-		}
-		for _, v := range h.Extensions {
-			switch e := v.(type) {
-			case *extension.UseSRTP:
-				profile, ok := findMatchingSRTPProfile(e.ProtectionProfiles, cfg.localSRTPProtectionProfiles)
-				if !ok {
-					return 0, &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, errClientNoMatchingSRTPProfile
-				}
-				state.srtpProtectionProfile = profile
-			case *extension.UseExtendedMasterSecret:
-				if cfg.extendedMasterSecret != DisableExtendedMasterSecret {
-					state.extendedMasterSecret = true
-				}
-			}
-		}
-		if cfg.extendedMasterSecret == RequireExtendedMasterSecret && !state.extendedMasterSecret {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errClientRequiredButNoServerEMS
-		}
-		if len(cfg.localSRTPProtectionProfiles) > 0 && state.srtpProtectionProfile == 0 {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errRequestedButNoSRTPExtension
-		}
-
-		remoteCipherSuite := cipherSuiteForID(CipherSuiteID(*h.CipherSuiteID), cfg.customCipherSuites)
-		if remoteCipherSuite == nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errCipherSuiteNoIntersection
-		}
-
-		selectedCipherSuite, ok := findMatchingCipherSuite([]CipherSuite{remoteCipherSuite}, cfg.localCipherSuites)
-		if !ok {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errInvalidCipherSuite
-		}
-
-		state.cipherSuite = selectedCipherSuite
-		state.remoteRandom = h.Random
-		cfg.log.Tracef("[handshake] use cipher suite: %s", selectedCipherSuite.String())
-	}
-
-	if h, ok := msgs[handshake.TypeCertificate].(*handshake.MessageCertificate); ok {
-		state.PeerCertificates = h.Certificate
-	} else if state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeCertificate {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.NoCertificate}, errInvalidCertificate
-	}
-
-	if h, ok := msgs[handshake.TypeServerKeyExchange].(*handshake.MessageServerKeyExchange); ok {
-		alertPtr, err := handleServerKeyExchange(c, state, cfg, h)
-		if err != nil {
-			return 0, alertPtr, err
-		}
-	}
-
-	if _, ok := msgs[handshake.TypeCertificateRequest].(*handshake.MessageCertificateRequest); ok {
-		state.remoteRequestedCertificate = true
-	}
-
-	return flight5, nil, nil
-}
-
-func handleServerKeyExchange(_ flightConn, state *State, cfg *handshakeConfig, h *handshake.MessageServerKeyExchange) (*alert.Alert, error) {
-	var err error
-	if cfg.localPSKCallback != nil {
-		var psk []byte
-		if psk, err = cfg.localPSKCallback(h.IdentityHint); err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		state.IdentityHint = h.IdentityHint
-		state.preMasterSecret = prf.PSKPreMasterSecret(psk)
-	} else {
-		if state.localKeypair, err = elliptic.GenerateKeypair(h.NamedCurve); err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-
-		if state.preMasterSecret, err = prf.PreMasterSecret(h.PublicKey, state.localKeypair.PrivateKey, state.localKeypair.Curve); err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-	}
-
-	return nil, nil
-}
-
-func flight3Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	extensions := []extension.Extension{
-		&extension.SupportedSignatureAlgorithms{
-			SignatureHashAlgorithms: cfg.localSignatureSchemes,
-		},
-		&extension.RenegotiationInfo{
-			RenegotiatedConnection: 0,
-		},
-	}
-	if cfg.localPSKCallback == nil {
-		extensions = append(extensions, []extension.Extension{
-			&extension.SupportedEllipticCurves{
-				EllipticCurves: []elliptic.Curve{elliptic.X25519, elliptic.P256, elliptic.P384},
-			},
-			&extension.SupportedPointFormats{
-				PointFormats: []elliptic.CurvePointFormat{elliptic.CurvePointFormatUncompressed},
-			},
-		}...)
-	}
-
-	if len(cfg.localSRTPProtectionProfiles) > 0 {
-		extensions = append(extensions, &extension.UseSRTP{
-			ProtectionProfiles: cfg.localSRTPProtectionProfiles,
-		})
-	}
-
-	if cfg.extendedMasterSecret == RequestExtendedMasterSecret ||
-		cfg.extendedMasterSecret == RequireExtendedMasterSecret {
-		extensions = append(extensions, &extension.UseExtendedMasterSecret{
-			Supported: true,
-		})
-	}
-
-	if len(cfg.serverName) > 0 {
-		extensions = append(extensions, &extension.ServerName{ServerName: cfg.serverName})
-	}
-
-	return []*packet{
-		{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageClientHello{
-						Version:            protocol.Version1_2,
-						Cookie:             state.cookie,
-						Random:             state.localRandom,
-						CipherSuiteIDs:     cipherSuiteIDs(cfg.localCipherSuites),
-						CompressionMethods: defaultCompressionMethods(),
-						Extensions:         extensions,
-					},
-				},
-			},
-		},
-	}, nil, nil
-}
--- a/anylink/dtls-2.0.9/flight4handler.go
+++ b/anylink/dtls-2.0.9/flight4handler.go
@ -1,352 +0,0 @@
-package dtls
-
-import (
-	"context"
-	"crypto/x509"
-
-	"github.com/pion/dtls/v2/pkg/crypto/clientcertificate"
-	"github.com/pion/dtls/v2/pkg/crypto/elliptic"
-	"github.com/pion/dtls/v2/pkg/crypto/prf"
-	"github.com/pion/dtls/v2/pkg/crypto/signaturehash"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/extension"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight4Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) { //nolint:gocognit
-	seq, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence,
-		handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, true},
-		handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-		handshakeCachePullRule{handshake.TypeCertificateVerify, cfg.initialEpoch, true, true},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-
-	// Validate type
-	var clientKeyExchange *handshake.MessageClientKeyExchange
-	if clientKeyExchange, ok = msgs[handshake.TypeClientKeyExchange].(*handshake.MessageClientKeyExchange); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-
-	if h, hasCert := msgs[handshake.TypeCertificate].(*handshake.MessageCertificate); hasCert {
-		state.PeerCertificates = h.Certificate
-	}
-
-	if h, hasCertVerify := msgs[handshake.TypeCertificateVerify].(*handshake.MessageCertificateVerify); hasCertVerify {
-		if state.PeerCertificates == nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.NoCertificate}, errCertificateVerifyNoCertificate
-		}
-
-		plainText := cache.pullAndMerge(
-			handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-		)
-
-		// Verify that the pair of hash algorithm and signiture is listed.
-		var validSignatureScheme bool
-		for _, ss := range cfg.localSignatureSchemes {
-			if ss.Hash == h.HashAlgorithm && ss.Signature == h.SignatureAlgorithm {
-				validSignatureScheme = true
-				break
-			}
-		}
-		if !validSignatureScheme {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errNoAvailableSignatureSchemes
-		}
-
-		if err := verifyCertificateVerify(plainText, h.HashAlgorithm, h.Signature, state.PeerCertificates); err != nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-		}
-		var chains [][]*x509.Certificate
-		var err error
-		var verified bool
-		if cfg.clientAuth >= VerifyClientCertIfGiven {
-			if chains, err = verifyClientCert(state.PeerCertificates, cfg.clientCAs); err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-			}
-			verified = true
-		}
-		if cfg.verifyPeerCertificate != nil {
-			if err := cfg.verifyPeerCertificate(state.PeerCertificates, chains); err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-			}
-		}
-		state.peerCertificatesVerified = verified
-	}
-
-	if !state.cipherSuite.IsInitialized() {
-		serverRandom := state.localRandom.MarshalFixed()
-		clientRandom := state.remoteRandom.MarshalFixed()
-
-		var err error
-		var preMasterSecret []byte
-		if state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypePreSharedKey {
-			var psk []byte
-			if psk, err = cfg.localPSKCallback(clientKeyExchange.IdentityHint); err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-			}
-			state.IdentityHint = clientKeyExchange.IdentityHint
-			preMasterSecret = prf.PSKPreMasterSecret(psk)
-		} else {
-			preMasterSecret, err = prf.PreMasterSecret(clientKeyExchange.PublicKey, state.localKeypair.PrivateKey, state.localKeypair.Curve)
-			if err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, err
-			}
-		}
-
-		if state.extendedMasterSecret {
-			var sessionHash []byte
-			sessionHash, err = cache.sessionHash(state.cipherSuite.HashFunc(), cfg.initialEpoch)
-			if err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-			}
-
-			state.masterSecret, err = prf.ExtendedMasterSecret(preMasterSecret, sessionHash, state.cipherSuite.HashFunc())
-			if err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-			}
-		} else {
-			state.masterSecret, err = prf.MasterSecret(preMasterSecret, clientRandom[:], serverRandom[:], state.cipherSuite.HashFunc())
-			if err != nil {
-				return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-			}
-		}
-
-		if err := state.cipherSuite.Init(state.masterSecret, clientRandom[:], serverRandom[:], false); err != nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		cfg.writeKeyLog(keyLogLabelTLS12, clientRandom[:], state.masterSecret)
-	}
-
-	// Now, encrypted packets can be handled
-	if err := c.handleQueuedPackets(ctx); err != nil {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-	}
-
-	seq, msgs, ok = cache.fullPullMap(seq,
-		handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, true, false},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-	state.handshakeRecvSequence = seq
-
-	if _, ok = msgs[handshake.TypeFinished].(*handshake.MessageFinished); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-
-	if state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeAnonymous {
-		return flight6, nil, nil
-	}
-
-	switch cfg.clientAuth {
-	case RequireAnyClientCert:
-		if state.PeerCertificates == nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.NoCertificate}, errClientCertificateRequired
-		}
-	case VerifyClientCertIfGiven:
-		if state.PeerCertificates != nil && !state.peerCertificatesVerified {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, errClientCertificateNotVerified
-		}
-	case RequireAndVerifyClientCert:
-		if state.PeerCertificates == nil {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.NoCertificate}, errClientCertificateRequired
-		}
-		if !state.peerCertificatesVerified {
-			return 0, &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, errClientCertificateNotVerified
-		}
-	case NoClientCert, RequestClientCert:
-		return flight6, nil, nil
-	}
-
-	return flight6, nil, nil
-}
-
-func flight4Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	extensions := []extension.Extension{&extension.RenegotiationInfo{
-		RenegotiatedConnection: 0,
-	}}
-	if (cfg.extendedMasterSecret == RequestExtendedMasterSecret ||
-		cfg.extendedMasterSecret == RequireExtendedMasterSecret) && state.extendedMasterSecret {
-		extensions = append(extensions, &extension.UseExtendedMasterSecret{
-			Supported: true,
-		})
-	}
-	if state.srtpProtectionProfile != 0 {
-		extensions = append(extensions, &extension.UseSRTP{
-			ProtectionProfiles: []SRTPProtectionProfile{state.srtpProtectionProfile},
-		})
-	}
-	if state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeCertificate {
-		extensions = append(extensions, []extension.Extension{
-			&extension.SupportedEllipticCurves{
-				EllipticCurves: []elliptic.Curve{elliptic.X25519, elliptic.P256, elliptic.P384},
-			},
-			&extension.SupportedPointFormats{
-				PointFormats: []elliptic.CurvePointFormat{elliptic.CurvePointFormatUncompressed},
-			},
-		}...)
-	}
-
-	var pkts []*packet
-	cipherSuiteID := uint16(state.cipherSuite.ID())
-
-	pkts = append(pkts, &packet{
-		record: &recordlayer.RecordLayer{
-			Header: recordlayer.Header{
-				Version: protocol.Version1_2,
-			},
-			Content: &handshake.Handshake{
-				Message: &handshake.MessageServerHello{
-					Version:           protocol.Version1_2,
-					Random:            state.localRandom,
-					SessionID:         state.SessionID,
-					CipherSuiteID:     &cipherSuiteID,
-					CompressionMethod: defaultCompressionMethods()[0],
-					Extensions:        extensions,
-				},
-			},
-		},
-	})
-
-	// TODO 添加 CiscoCompat 支持
-	if cfg.localCiscoCompatCallback != nil {
-		if !state.cipherSuite.IsInitialized() {
-			serverRandom := state.localRandom.MarshalFixed()
-			clientRandom := state.remoteRandom.MarshalFixed()
-
-			if err := state.cipherSuite.Init(state.masterSecret, clientRandom[:], serverRandom[:], false); err != nil {
-				return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-			}
-			cfg.writeKeyLog(keyLogLabelTLS12, clientRandom[:], state.masterSecret)
-		}
-		return pkts, nil, nil
-	}
-
-	switch {
-	case state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeCertificate:
-		certificate, err := cfg.getCertificate(cfg.serverName)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.HandshakeFailure}, err
-		}
-
-		pkts = append(pkts, &packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageCertificate{
-						Certificate: certificate.Certificate,
-					},
-				},
-			},
-		})
-
-		serverRandom := state.localRandom.MarshalFixed()
-		clientRandom := state.remoteRandom.MarshalFixed()
-
-		// Find compatible signature scheme
-		signatureHashAlgo, err := signaturehash.SelectSignatureScheme(cfg.localSignatureSchemes, certificate.PrivateKey)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, err
-		}
-
-		signature, err := generateKeySignature(clientRandom[:], serverRandom[:], state.localKeypair.PublicKey, state.namedCurve, certificate.PrivateKey, signatureHashAlgo.Hash)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		state.localKeySignature = signature
-
-		pkts = append(pkts, &packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageServerKeyExchange{
-						EllipticCurveType:  elliptic.CurveTypeNamedCurve,
-						NamedCurve:         state.namedCurve,
-						PublicKey:          state.localKeypair.PublicKey,
-						HashAlgorithm:      signatureHashAlgo.Hash,
-						SignatureAlgorithm: signatureHashAlgo.Signature,
-						Signature:          state.localKeySignature,
-					},
-				},
-			},
-		})
-
-		if cfg.clientAuth > NoClientCert {
-			pkts = append(pkts, &packet{
-				record: &recordlayer.RecordLayer{
-					Header: recordlayer.Header{
-						Version: protocol.Version1_2,
-					},
-					Content: &handshake.Handshake{
-						Message: &handshake.MessageCertificateRequest{
-							CertificateTypes:        []clientcertificate.Type{clientcertificate.RSASign, clientcertificate.ECDSASign},
-							SignatureHashAlgorithms: cfg.localSignatureSchemes,
-						},
-					},
-				},
-			})
-		}
-	case cfg.localPSKIdentityHint != nil:
-		// To help the client in selecting which identity to use, the server
-		// can provide a "PSK identity hint" in the ServerKeyExchange message.
-		// If no hint is provided, the ServerKeyExchange message is omitted.
-		//
-		// https://tools.ietf.org/html/rfc4279#section-2
-		pkts = append(pkts, &packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageServerKeyExchange{
-						IdentityHint: cfg.localPSKIdentityHint,
-					},
-				},
-			},
-		})
-	case state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeAnonymous:
-		pkts = append(pkts, &packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageServerKeyExchange{
-						EllipticCurveType: elliptic.CurveTypeNamedCurve,
-						NamedCurve:        state.namedCurve,
-						PublicKey:         state.localKeypair.PublicKey,
-					},
-				},
-			},
-		})
-	}
-
-	pkts = append(pkts, &packet{
-		record: &recordlayer.RecordLayer{
-			Header: recordlayer.Header{
-				Version: protocol.Version1_2,
-			},
-			Content: &handshake.Handshake{
-				Message: &handshake.MessageServerHelloDone{},
-			},
-		},
-	})
-
-	return pkts, nil, nil
-}
--- a/anylink/dtls-2.0.9/flight5handler.go
+++ b/anylink/dtls-2.0.9/flight5handler.go
@ -1,323 +0,0 @@
-package dtls
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/x509"
-
-	"github.com/pion/dtls/v2/pkg/crypto/prf"
-	"github.com/pion/dtls/v2/pkg/crypto/signaturehash"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight5Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) {
-	_, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence,
-		handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, false, false},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-
-	var finished *handshake.MessageFinished
-	if finished, ok = msgs[handshake.TypeFinished].(*handshake.MessageFinished); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-	plainText := cache.pullAndMerge(
-		handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-		handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-		handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, false},
-		handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-		handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, false},
-		handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-		handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, false},
-		handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-		handshakeCachePullRule{handshake.TypeCertificateVerify, cfg.initialEpoch, true, false},
-		handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, true, false},
-	)
-
-	expectedVerifyData, err := prf.VerifyDataServer(state.masterSecret, plainText, state.cipherSuite.HashFunc())
-	if err != nil {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-	}
-	if !bytes.Equal(expectedVerifyData, finished.VerifyData) {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.HandshakeFailure}, errVerifyDataMismatch
-	}
-
-	return flight5, nil, nil
-}
-
-func flight5Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) { //nolint:gocognit
-	var certBytes [][]byte
-	var privateKey crypto.PrivateKey
-	if len(cfg.localCertificates) > 0 {
-		certificate, err := cfg.getCertificate(cfg.serverName)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.HandshakeFailure}, err
-		}
-		certBytes = certificate.Certificate
-		privateKey = certificate.PrivateKey
-	}
-
-	var pkts []*packet
-
-	if state.remoteRequestedCertificate {
-		pkts = append(pkts,
-			&packet{
-				record: &recordlayer.RecordLayer{
-					Header: recordlayer.Header{
-						Version: protocol.Version1_2,
-					},
-					Content: &handshake.Handshake{
-						Message: &handshake.MessageCertificate{
-							Certificate: certBytes,
-						},
-					},
-				},
-			})
-	}
-
-	clientKeyExchange := &handshake.MessageClientKeyExchange{}
-	if cfg.localPSKCallback == nil {
-		clientKeyExchange.PublicKey = state.localKeypair.PublicKey
-	} else {
-		clientKeyExchange.IdentityHint = cfg.localPSKIdentityHint
-	}
-
-	pkts = append(pkts,
-		&packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: clientKeyExchange,
-				},
-			},
-		})
-
-	serverKeyExchangeData := cache.pullAndMerge(
-		handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-	)
-
-	serverKeyExchange := &handshake.MessageServerKeyExchange{}
-
-	// handshakeMessageServerKeyExchange is optional for PSK
-	if len(serverKeyExchangeData) == 0 {
-		alertPtr, err := handleServerKeyExchange(c, state, cfg, &handshake.MessageServerKeyExchange{})
-		if err != nil {
-			return nil, alertPtr, err
-		}
-	} else {
-		rawHandshake := &handshake.Handshake{}
-		err := rawHandshake.Unmarshal(serverKeyExchangeData)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.UnexpectedMessage}, err
-		}
-
-		switch h := rawHandshake.Message.(type) {
-		case *handshake.MessageServerKeyExchange:
-			serverKeyExchange = h
-		default:
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.UnexpectedMessage}, errInvalidContentType
-		}
-	}
-
-	// Append not-yet-sent packets
-	merged := []byte{}
-	seqPred := uint16(state.handshakeSendSequence)
-	for _, p := range pkts {
-		h, ok := p.record.Content.(*handshake.Handshake)
-		if !ok {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, errInvalidContentType
-		}
-		h.Header.MessageSequence = seqPred
-		seqPred++
-		raw, err := h.Marshal()
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		merged = append(merged, raw...)
-	}
-
-	if alertPtr, err := initalizeCipherSuite(state, cache, cfg, serverKeyExchange, merged); err != nil {
-		return nil, alertPtr, err
-	}
-
-	// If the client has sent a certificate with signing ability, a digitally-signed
-	// CertificateVerify message is sent to explicitly verify possession of the
-	// private key in the certificate.
-	if state.remoteRequestedCertificate && len(cfg.localCertificates) > 0 {
-		plainText := append(cache.pullAndMerge(
-			handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-		), merged...)
-
-		// Find compatible signature scheme
-		signatureHashAlgo, err := signaturehash.SelectSignatureScheme(cfg.localSignatureSchemes, privateKey)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, err
-		}
-
-		certVerify, err := generateCertificateVerify(plainText, privateKey, signatureHashAlgo.Hash)
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		state.localCertificatesVerify = certVerify
-
-		p := &packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageCertificateVerify{
-						HashAlgorithm:      signatureHashAlgo.Hash,
-						SignatureAlgorithm: signatureHashAlgo.Signature,
-						Signature:          state.localCertificatesVerify,
-					},
-				},
-			},
-		}
-		pkts = append(pkts, p)
-
-		h, ok := p.record.Content.(*handshake.Handshake)
-		if !ok {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, errInvalidContentType
-		}
-		h.Header.MessageSequence = seqPred
-		// seqPred++ // this is the last use of seqPred
-		raw, err := h.Marshal()
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-		merged = append(merged, raw...)
-	}
-
-	pkts = append(pkts,
-		&packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &protocol.ChangeCipherSpec{},
-			},
-		})
-
-	if len(state.localVerifyData) == 0 {
-		plainText := cache.pullAndMerge(
-			handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeCertificateVerify, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, true, false},
-		)
-
-		var err error
-		state.localVerifyData, err = prf.VerifyDataClient(state.masterSecret, append(plainText, merged...), state.cipherSuite.HashFunc())
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-	}
-
-	pkts = append(pkts,
-		&packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-					Epoch:   1,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageFinished{
-						VerifyData: state.localVerifyData,
-					},
-				},
-			},
-			shouldEncrypt:            true,
-			resetLocalSequenceNumber: true,
-		})
-
-	return pkts, nil, nil
-}
-
-func initalizeCipherSuite(state *State, cache *handshakeCache, cfg *handshakeConfig, h *handshake.MessageServerKeyExchange, sendingPlainText []byte) (*alert.Alert, error) { //nolint:gocognit
-	if state.cipherSuite.IsInitialized() {
-		return nil, nil
-	}
-
-	clientRandom := state.localRandom.MarshalFixed()
-	serverRandom := state.remoteRandom.MarshalFixed()
-
-	var err error
-
-	if state.extendedMasterSecret {
-		var sessionHash []byte
-		sessionHash, err = cache.sessionHash(state.cipherSuite.HashFunc(), cfg.initialEpoch, sendingPlainText)
-		if err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-
-		state.masterSecret, err = prf.ExtendedMasterSecret(state.preMasterSecret, sessionHash, state.cipherSuite.HashFunc())
-		if err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.IllegalParameter}, err
-		}
-	} else {
-		state.masterSecret, err = prf.MasterSecret(state.preMasterSecret, clientRandom[:], serverRandom[:], state.cipherSuite.HashFunc())
-		if err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-	}
-
-	if state.cipherSuite.AuthenticationType() == CipherSuiteAuthenticationTypeCertificate {
-		// Verify that the pair of hash algorithm and signiture is listed.
-		var validSignatureScheme bool
-		for _, ss := range cfg.localSignatureSchemes {
-			if ss.Hash == h.HashAlgorithm && ss.Signature == h.SignatureAlgorithm {
-				validSignatureScheme = true
-				break
-			}
-		}
-		if !validSignatureScheme {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.InsufficientSecurity}, errNoAvailableSignatureSchemes
-		}
-
-		expectedMsg := valueKeyMessage(clientRandom[:], serverRandom[:], h.PublicKey, h.NamedCurve)
-		if err = verifyKeySignature(expectedMsg, h.Signature, h.HashAlgorithm, state.PeerCertificates); err != nil {
-			return &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-		}
-		var chains [][]*x509.Certificate
-		if !cfg.insecureSkipVerify {
-			if chains, err = verifyServerCert(state.PeerCertificates, cfg.rootCAs, cfg.serverName); err != nil {
-				return &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-			}
-		}
-		if cfg.verifyPeerCertificate != nil {
-			if err = cfg.verifyPeerCertificate(state.PeerCertificates, chains); err != nil {
-				return &alert.Alert{Level: alert.Fatal, Description: alert.BadCertificate}, err
-			}
-		}
-	}
-
-	if err = state.cipherSuite.Init(state.masterSecret, clientRandom[:], serverRandom[:], true); err != nil {
-		return &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-	}
-
-	cfg.writeKeyLog(keyLogLabelTLS12, clientRandom[:], state.masterSecret)
-
-	return nil, nil
-}
--- a/anylink/dtls-2.0.9/flight6handler.go
+++ b/anylink/dtls-2.0.9/flight6handler.go
@ -1,82 +0,0 @@
-package dtls
-
-import (
-	"context"
-
-	"github.com/pion/dtls/v2/pkg/crypto/prf"
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-func flight6Parse(ctx context.Context, c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) (flightVal, *alert.Alert, error) {
-	_, msgs, ok := cache.fullPullMap(state.handshakeRecvSequence-1,
-		handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, true, false},
-	)
-	if !ok {
-		// No valid message received. Keep reading
-		return 0, nil, nil
-	}
-
-	if _, ok = msgs[handshake.TypeFinished].(*handshake.MessageFinished); !ok {
-		return 0, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, nil
-	}
-
-	// Other party retransmitted the last flight.
-	return flight6, nil, nil
-}
-
-func flight6Generate(c flightConn, state *State, cache *handshakeCache, cfg *handshakeConfig) ([]*packet, *alert.Alert, error) {
-	var pkts []*packet
-
-	pkts = append(pkts,
-		&packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-				},
-				Content: &protocol.ChangeCipherSpec{},
-			},
-		})
-
-	if len(state.localVerifyData) == 0 {
-		plainText := cache.pullAndMerge(
-			handshakeCachePullRule{handshake.TypeClientHello, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeServerHello, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerKeyExchange, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificateRequest, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeServerHelloDone, cfg.initialEpoch, false, false},
-			handshakeCachePullRule{handshake.TypeCertificate, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeClientKeyExchange, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeCertificateVerify, cfg.initialEpoch, true, false},
-			handshakeCachePullRule{handshake.TypeFinished, cfg.initialEpoch + 1, true, false},
-		)
-
-		var err error
-		state.localVerifyData, err = prf.VerifyDataServer(state.masterSecret, plainText, state.cipherSuite.HashFunc())
-		if err != nil {
-			return nil, &alert.Alert{Level: alert.Fatal, Description: alert.InternalError}, err
-		}
-	}
-
-	pkts = append(pkts,
-		&packet{
-			record: &recordlayer.RecordLayer{
-				Header: recordlayer.Header{
-					Version: protocol.Version1_2,
-					Epoch:   1,
-				},
-				Content: &handshake.Handshake{
-					Message: &handshake.MessageFinished{
-						VerifyData: state.localVerifyData,
-					},
-				},
-			},
-			shouldEncrypt:            true,
-			resetLocalSequenceNumber: true,
-		},
-	)
-	return pkts, nil, nil
-}
--- a/anylink/dtls-2.0.9/flighthandler.go
+++ b/anylink/dtls-2.0.9/flighthandler.go
@ -1,57 +0,0 @@
-package dtls
-
-import (
-	"context"
-
-	"github.com/pion/dtls/v2/pkg/protocol/alert"
-)
-
-// Parse received handshakes and return next flightVal
-type flightParser func(context.Context, flightConn, *State, *handshakeCache, *handshakeConfig) (flightVal, *alert.Alert, error)
-
-// Generate flights
-type flightGenerator func(flightConn, *State, *handshakeCache, *handshakeConfig) ([]*packet, *alert.Alert, error)
-
-func (f flightVal) getFlightParser() (flightParser, error) {
-	switch f {
-	case flight0:
-		return flight0Parse, nil
-	case flight1:
-		return flight1Parse, nil
-	case flight2:
-		return flight2Parse, nil
-	case flight3:
-		return flight3Parse, nil
-	case flight4:
-		return flight4Parse, nil
-	case flight5:
-		return flight5Parse, nil
-	case flight6:
-		return flight6Parse, nil
-	default:
-		return nil, errInvalidFlight
-	}
-}
-
-func (f flightVal) getFlightGenerator() (gen flightGenerator, retransmit bool, err error) {
-	switch f {
-	case flight0:
-		return flight0Generate, true, nil
-	case flight1:
-		return flight1Generate, true, nil
-	case flight2:
-		// https://tools.ietf.org/html/rfc6347#section-3.2.1
-		// HelloVerifyRequests must not be retransmitted.
-		return flight2Generate, false, nil
-	case flight3:
-		return flight3Generate, true, nil
-	case flight4:
-		return flight4Generate, true, nil
-	case flight5:
-		return flight5Generate, true, nil
-	case flight6:
-		return flight6Generate, true, nil
-	default:
-		return nil, false, errInvalidFlight
-	}
-}
--- a/anylink/dtls-2.0.9/fragment_buffer.go
+++ b/anylink/dtls-2.0.9/fragment_buffer.go
@ -1,111 +0,0 @@
-package dtls
-
-import (
-	"github.com/pion/dtls/v2/pkg/protocol"
-	"github.com/pion/dtls/v2/pkg/protocol/handshake"
-	"github.com/pion/dtls/v2/pkg/protocol/recordlayer"
-)
-
-type fragment struct {
-	recordLayerHeader recordlayer.Header
-	handshakeHeader   handshake.Header
-	data              []byte
-}
-
-type fragmentBuffer struct {
-	// map of MessageSequenceNumbers that hold slices of fragments
-	cache map[uint16][]*fragment
-
-	currentMessageSequenceNumber uint16
-}
-
-func newFragmentBuffer() *fragmentBuffer {
-	return &fragmentBuffer{cache: map[uint16][]*fragment{}}
-}
-
-// Attempts to push a DTLS packet to the fragmentBuffer
-// when it returns true it means the fragmentBuffer has inserted and the buffer shouldn't be handled
-// when an error returns it is fatal, and the DTLS connection should be stopped
-func (f *fragmentBuffer) push(buf []byte) (bool, error) {
-	frag := new(fragment)
-	if err := frag.recordLayerHeader.Unmarshal(buf); err != nil {
-		return false, err
-	}
-
-	// fragment isn't a handshake, we don't need to handle it
-	if frag.recordLayerHeader.ContentType != protocol.ContentTypeHandshake {
-		return false, nil
-	}
-
-	for buf = buf[recordlayer.HeaderSize:]; len(buf) != 0; frag = new(fragment) {
-		if err := frag.handshakeHeader.Unmarshal(buf); err != nil {
-			return false, err
-		}
-
-		if _, ok := f.cache[frag.handshakeHeader.MessageSequence]; !ok {
-			f.cache[frag.handshakeHeader.MessageSequence] = []*fragment{}
-		}
-
-		// end index should be the length of handshake header but if the handshake
-		// was fragmented, we should keep them all
-		end := int(handshake.HeaderLength + frag.handshakeHeader.Length)
-		if size := len(buf); end > size {
-			end = size
-		}
-
-		// Discard all headers, when rebuilding the packet we will re-build
-		frag.data = append([]byte{}, buf[handshake.HeaderLength:end]...)
-		f.cache[frag.handshakeHeader.MessageSequence] = append(f.cache[frag.handshakeHeader.MessageSequence], frag)
-		buf = buf[end:]
-	}
-
-	return true, nil
-}
-
-func (f *fragmentBuffer) pop() (content []byte, epoch uint16) {
-	frags, ok := f.cache[f.currentMessageSequenceNumber]
-	if !ok {
-		return nil, 0
-	}
-
-	// Go doesn't support recursive lambdas
-	var appendMessage func(targetOffset uint32) bool
-
-	rawMessage := []byte{}
-	appendMessage = func(targetOffset uint32) bool {
-		for _, f := range frags {
-			if f.handshakeHeader.FragmentOffset == targetOffset {
-				fragmentEnd := (f.handshakeHeader.FragmentOffset + f.handshakeHeader.FragmentLength)
-				if fragmentEnd != f.handshakeHeader.Length {
-					if !appendMessage(fragmentEnd) {
-						return false
-					}
-				}
-
-				rawMessage = append(f.data, rawMessage...)
-				return true
-			}
-		}
-		return false
-	}
-
-	// Recursively collect up
-	if !appendMessage(0) {
-		return nil, 0
-	}
-
-	firstHeader := frags[0].handshakeHeader
-	firstHeader.FragmentOffset = 0
-	firstHeader.FragmentLength = firstHeader.Length
-
-	rawHeader, err := firstHeader.Marshal()
-	if err != nil {
-		return nil, 0
-	}
-
-	messageEpoch := frags[0].recordLayerHeader.Epoch
-
-	delete(f.cache, f.currentMessageSequenceNumber)
-	f.currentMessageSequenceNumber++
-	return append(rawHeader, rawMessage...), messageEpoch
-}
--- a/anylink/dtls-2.0.9/fragment_buffer_test.go
+++ b/anylink/dtls-2.0.9/fragment_buffer_test.go
@ -1,101 +0,0 @@
-package dtls
-
-import (
-	"reflect"
-	"testing"
-)
-
-func TestFragmentBuffer(t *testing.T) {
-	for _, test := range []struct {
-		Name     string
-		In       [][]byte
-		Expected [][]byte
-		Epoch    uint16
-	}{
-		{
-			Name: "Single Fragment",
-			In: [][]byte{
-				{0x16, 0xfe, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x03, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0x00},
-			},
-			Expected: [][]byte{
-				{0x03, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0x00},
-			},
-			Epoch: 0,
-		},
-		{
-			Name: "Single Fragment Epoch 3",
-			In: [][]byte{
-				{0x16, 0xfe, 0xff, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x03, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0x00},
-			},
-			Expected: [][]byte{
-				{0x03, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0x00},
-			},
-			Epoch: 3,
-		},
-		{
-			Name: "Multiple Fragments",
-			In: [][]byte{
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x01, 0x02, 0x03, 0x04},
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x05, 0x05, 0x06, 0x07, 0x08, 0x09},
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x05, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E},
-			},
-			Expected: [][]byte{
-				{0x0b, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e},
-			},
-			Epoch: 0,
-		},
-		{
-			Name: "Multiple Unordered Fragments",
-			In: [][]byte{
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x01, 0x02, 0x03, 0x04},
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x05, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E},
-				{0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x81, 0x0b, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x05, 0x05, 0x06, 0x07, 0x08, 0x09},
-			},
-			Expected: [][]byte{
-				{0x0b, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e},
-			},
-			Epoch: 0,
-		},
-		{
-			Name: "Multiple Handshakes in Signle Fragment",
-			In: [][]byte{
-				{
-					0x16, 0xfe, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x30, /* record header */
-					0x03, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01, /*handshake msg 1*/
-					0x03, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01, /*handshake msg 2*/
-					0x03, 0x00, 0x00, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01, /*handshake msg 3*/
-				},
-			},
-			Expected: [][]byte{
-				{0x03, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01},
-				{0x03, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01},
-				{0x03, 0x00, 0x00, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0xfe, 0xff, 0x01, 0x01},
-			},
-			Epoch: 0,
-		},
-	} {
-		fragmentBuffer := newFragmentBuffer()
-		for _, frag := range test.In {
-			status, err := fragmentBuffer.push(frag)
-			if err != nil {
-				t.Error(err)
-			} else if !status {
-				t.Errorf("fragmentBuffer didn't accept fragments for '%s'", test.Name)
-			}
-		}
-
-		for _, expected := range test.Expected {
-			out, epoch := fragmentBuffer.pop()
-			if !reflect.DeepEqual(out, expected) {
-				t.Errorf("fragmentBuffer '%s' push/pop: got % 02x, want % 02x", test.Name, out, expected)
-			}
-			if epoch != test.Epoch {
-				t.Errorf("fragmentBuffer returned wrong epoch: got %d, want %d", epoch, test.Epoch)
-			}
-		}
-
-		if frag, _ := fragmentBuffer.pop(); frag != nil {
-			t.Errorf("fragmentBuffer popped single buffer multiple times for '%s'", test.Name)
-		}
-	}
-}
--- a/anylink/dtls-2.0.9/fuzz.go
+++ b/anylink/dtls-2.0.9/fuzz.go
@ -1,38 +0,0 @@
-// +build gofuzz
-
-package dtls
-
-import "fmt"
-
-func partialHeaderMismatch(a, b recordlayer.Header) bool {
-	// Ignoring content length for now.
-	a.contentLen = b.contentLen
-	return a != b
-}
-
-func FuzzRecordLayer(data []byte) int {
-	var r recordLayer
-	if err := r.Unmarshal(data); err != nil {
-		return 0
-	}
-	buf, err := r.Marshal()
-	if err != nil {
-		return 1
-	}
-	if len(buf) == 0 {
-		panic("zero buff") // nolint
-	}
-	var nr recordLayer
-	if err = nr.Unmarshal(data); err != nil {
-		panic(err) // nolint
-	}
-	if partialHeaderMismatch(nr.recordlayer.Header, r.recordlayer.Header) {
-		panic( // nolint
-			fmt.Sprintf("header mismatch: %+v != %+v",
-				nr.recordlayer.Header, r.recordlayer.Header,
-			),
-		)
-	}
-
-	return 1
-}
--- a/anylink/dtls-2.0.9/fuzz/corpus/012178ca0830b7449ad370598d55873d81b95e40-25
+++ b/anylink/dtls-2.0.9/fuzz/corpus/012178ca0830b7449ad370598d55873d81b95e40-25
--- a/anylink/dtls-2.0.9/fuzz/corpus/01277073b27ccc6925ce4c941527f7b7705c8311-1
+++ b/anylink/dtls-2.0.9/fuzz/corpus/01277073b27ccc6925ce4c941527f7b7705c8311-1
@ -1 +0,0 @@
-Ñ12‡™ŠÇ[A51
--- a/anylink/dtls-2.0.9/fuzz/corpus/039192caed40959ac2f5c3254669312ba2dfbcad-12
+++ b/anylink/dtls-2.0.9/fuzz/corpus/039192caed40959ac2f5c3254669312ba2dfbcad-12
--- a/anylink/dtls-2.0.9/fuzz/corpus/03a9bad270cf32520b5c3e99add47c648ba6150f-7
+++ b/anylink/dtls-2.0.9/fuzz/corpus/03a9bad270cf32520b5c3e99add47c648ba6150f-7
--- a/anylink/dtls-2.0.9/fuzz/corpus/048fcd45b732d5bed912e6652bc265a0adaf5664-26
+++ b/anylink/dtls-2.0.9/fuzz/corpus/048fcd45b732d5bed912e6652bc265a0adaf5664-26
--- a/anylink/dtls-2.0.9/fuzz/corpus/04a28c0806a91267f0576e11d042400f41dc538b-12
+++ b/anylink/dtls-2.0.9/fuzz/corpus/04a28c0806a91267f0576e11d042400f41dc538b-12
--- a/anylink/dtls-2.0.9/fuzz/corpus/04d00cfd50deb9ccd9d14be8c58f401a0414dad3-30
+++ b/anylink/dtls-2.0.9/fuzz/corpus/04d00cfd50deb9ccd9d14be8c58f401a0414dad3-30
--- a/anylink/dtls-2.0.9/fuzz/corpus/04e7f402f7d9f6ed2e664190dbd3267eddfddefa-6
+++ b/anylink/dtls-2.0.9/fuzz/corpus/04e7f402f7d9f6ed2e664190dbd3267eddfddefa-6
--- a/anylink/dtls-2.0.9/fuzz/corpus/057a8c627dc06c27296c8208265a9f8a32a8d4c2-19
+++ b/anylink/dtls-2.0.9/fuzz/corpus/057a8c627dc06c27296c8208265a9f8a32a8d4c2-19
--- a/anylink/dtls-2.0.9/fuzz/corpus/05a0d164b8e3ca08dc1bd077ce4aa4559731182b-15
+++ b/anylink/dtls-2.0.9/fuzz/corpus/05a0d164b8e3ca08dc1bd077ce4aa4559731182b-15
--- a/anylink/dtls-2.0.9/fuzz/corpus/06148fe224720cd3a0497fc87f2b6bc5f004484a-30
+++ b/anylink/dtls-2.0.9/fuzz/corpus/06148fe224720cd3a0497fc87f2b6bc5f004484a-30
--- a/anylink/dtls-2.0.9/fuzz/corpus/078c2bd97a33002242f9d5ac0a95970c9432124a-31
+++ b/anylink/dtls-2.0.9/fuzz/corpus/078c2bd97a33002242f9d5ac0a95970c9432124a-31
--- a/anylink/dtls-2.0.9/fuzz/corpus/07ff33058f3c6732b9439f7d5c2bd50bb46adb31-20
+++ b/anylink/dtls-2.0.9/fuzz/corpus/07ff33058f3c6732b9439f7d5c2bd50bb46adb31-20
--- a/anylink/dtls-2.0.9/fuzz/corpus/08f2f7719e35261f615174917101cba578892f43-11
+++ b/anylink/dtls-2.0.9/fuzz/corpus/08f2f7719e35261f615174917101cba578892f43-11
--- a/anylink/dtls-2.0.9/fuzz/corpus/09b742837cf0d26ddecb5dbf536d91db6d1e9855-12
+++ b/anylink/dtls-2.0.9/fuzz/corpus/09b742837cf0d26ddecb5dbf536d91db6d1e9855-12
--- a/anylink/dtls-2.0.9/fuzz/corpus/0a3bff70743f3cc7ecdc293887c10e14e152dec2-19
+++ b/anylink/dtls-2.0.9/fuzz/corpus/0a3bff70743f3cc7ecdc293887c10e14e152dec2-19
--- a/anylink/dtls-2.0.9/fuzz/corpus/11e7b0e2a84f99b2f3f367cf546dde345bba563f-15
+++ b/anylink/dtls-2.0.9/fuzz/corpus/11e7b0e2a84f99b2f3f367cf546dde345bba563f-15
--- a/anylink/dtls-2.0.9/fuzz/corpus/136a342418a743d6167ef2b44e657c82427469b8-35
+++ b/anylink/dtls-2.0.9/fuzz/corpus/136a342418a743d6167ef2b44e657c82427469b8-35
--- a/anylink/dtls-2.0.9/fuzz/corpus/137e470b38deeeac3586025e0e6e2702117e26e6
+++ b/anylink/dtls-2.0.9/fuzz/corpus/137e470b38deeeac3586025e0e6e2702117e26e6
@ -1 +0,0 @@
-864797660130
--- a/anylink/dtls-2.0.9/fuzz/corpus/156c962d90205b0c4afa3394de42d56967dfc7ee-14
+++ b/anylink/dtls-2.0.9/fuzz/corpus/156c962d90205b0c4afa3394de42d56967dfc7ee-14
--- a/Show More
+++ b/Show More