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split CRYPTO frames when packing retransmissions, if neccessary

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This commit is contained in:
Marten Seemann 2020-02-26 11:24:09 +07:00
parent d024df7c8e
commit 5bfac02a44
2 changed files with 79 additions and 5 deletions
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14
retransmission_queue.go
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@ -56,10 +56,15 @@ func (q *retransmissionQueue) AddAppData(f wire.Frame) {
func (q *retransmissionQueue) GetInitialFrame(maxLen protocol.ByteCount) wire.Frame {
if len(q.initialCryptoData) > 0 {
if f := q.initialCryptoData[0]; f.Length(q.version) <= maxLen {
f := q.initialCryptoData[0]
newFrame, needsSplit := f.MaybeSplitOffFrame(maxLen, q.version)
if newFrame == nil && !needsSplit { // the whole frame fits
q.initialCryptoData = q.initialCryptoData[1:]
return f
}
if newFrame != nil { // frame was split. Leave the original frame in the queue.
return newFrame
}
}
if len(q.initial) == 0 {
return nil
@ -74,10 +79,15 @@ func (q *retransmissionQueue) GetInitialFrame(maxLen protocol.ByteCount) wire.Fr
func (q *retransmissionQueue) GetHandshakeFrame(maxLen protocol.ByteCount) wire.Frame {
if len(q.handshakeCryptoData) > 0 {
if f := q.handshakeCryptoData[0]; f.Length(q.version) <= maxLen {
f := q.handshakeCryptoData[0]
newFrame, needsSplit := f.MaybeSplitOffFrame(maxLen, q.version)
if newFrame == nil && !needsSplit { // the whole frame fits
q.handshakeCryptoData = q.handshakeCryptoData[1:]
return f
}
if newFrame != nil { // frame was split. Leave the original frame in the queue.
return newFrame
}
}
if len(q.handshake) == 0 {
return nil