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parse IETF headers independent of the sender's perspective

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The IETF header format allows parsing of the header without knowing
which peer sent the packet.
This commit is contained in:
Marten Seemann 2018-05-05 17:59:54 +09:00
parent 70f6e3651e
commit 8f2fed1b10
9 changed files with 74 additions and 74 deletions
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3
client.go
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@ -346,6 +346,9 @@ func (c *client) handleIETFQUICPacket(hdr *wire.Header, packetData []byte, remot
return fmt.Errorf("received a packet with an unexpected connection ID (%s, expected %s)", hdr.DestConnectionID, c.srcConnID)
}
if hdr.IsLongHeader {
if hdr.Type != protocol.PacketTypeRetry && hdr.Type != protocol.PacketTypeHandshake {
return fmt.Errorf("Received unsupported packet type: %s", hdr.Type)
}
c.logger.Debugf("len(packet data): %d, payloadLen: %d", len(packetData), hdr.PayloadLen)
if protocol.ByteCount(len(packetData)) < hdr.PayloadLen {
return fmt.Errorf("packet payload (%d bytes) is smaller than the expected payload length (%d bytes)", len(packetData), hdr.PayloadLen)