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fix dropping of the Initial packet number space for clients

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This commit is contained in:
Marten Seemann 2020-02-21 18:12:30 +07:00
parent 212bfed0d2
commit 24b840f56d
2 changed files with 47 additions and 3 deletions
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14
internal/ackhandler/sent_packet_handler.go
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@ -116,6 +116,16 @@ func newSentPacketHandler(
}
func (h *sentPacketHandler) DropPackets(encLevel protocol.EncryptionLevel) {
if h.perspective == protocol.PerspectiveClient && encLevel == protocol.EncryptionInitial {
// This function is called when the crypto setup seals a Handshake packet.
// If this Handshake packet is coalesced behind an Initial packet, we would drop the Initial packet number space
// before SentPacket() was called for that Initial packet.
return
}
h.dropPackets(encLevel)
}
func (h *sentPacketHandler) dropPackets(encLevel protocol.EncryptionLevel) {
// remove outstanding packets from bytes_in_flight
if encLevel == protocol.EncryptionInitial || encLevel == protocol.EncryptionHandshake {
pnSpace := h.getPacketNumberSpace(encLevel)
@ -153,6 +163,10 @@ func (h *sentPacketHandler) DropPackets(encLevel protocol.EncryptionLevel) {
}
func (h *sentPacketHandler) SentPacket(packet *Packet) {
// For the client, drop the Initial packet number space when the first Handshake packet is sent.
if h.perspective == protocol.PerspectiveClient && packet.EncryptionLevel == protocol.EncryptionHandshake && h.initialPackets != nil {
h.dropPackets(protocol.EncryptionInitial)
}
isAckEliciting := h.sentPacketImpl(packet)
if isAckEliciting {
h.getPacketNumberSpace(packet.EncryptionLevel).history.SentPacket(packet)