44 lines
1.0 KiB
Go
44 lines
1.0 KiB
Go
package extension
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import "encoding/binary"
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const (
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renegotiationInfoHeaderSize = 5
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)
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// RenegotiationInfo allows a Client/Server to
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// communicate their renegotation support
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//
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// https://tools.ietf.org/html/rfc5746
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type RenegotiationInfo struct {
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RenegotiatedConnection uint8
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}
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// TypeValue returns the extension TypeValue
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func (r RenegotiationInfo) TypeValue() TypeValue {
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return RenegotiationInfoTypeValue
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}
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// Marshal encodes the extension
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func (r *RenegotiationInfo) Marshal() ([]byte, error) {
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out := make([]byte, renegotiationInfoHeaderSize)
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binary.BigEndian.PutUint16(out, uint16(r.TypeValue()))
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binary.BigEndian.PutUint16(out[2:], uint16(1)) // length
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out[4] = r.RenegotiatedConnection
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return out, nil
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}
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// Unmarshal populates the extension from encoded data
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func (r *RenegotiationInfo) Unmarshal(data []byte) error {
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if len(data) < renegotiationInfoHeaderSize {
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return errBufferTooSmall
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} else if TypeValue(binary.BigEndian.Uint16(data)) != r.TypeValue() {
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return errInvalidExtensionType
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}
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r.RenegotiatedConnection = data[4]
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return nil
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}
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