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686 commits

Author SHA1 Message Date
Marten Seemann
4b17343631 rename the session to connection 2022-03-27 12:50:14 +01:00
Marten Seemann
a088ba4607 rename quicConn.earlySessionReady to quicConn.earlyConnReady 2022-03-27 11:27:25 +01:00
Marten Seemann
1ae835d1d8 rename occurrences of session in client, server and packetHandlerMap 2022-03-27 11:27:25 +01:00
Marten Seemann
86338d3ce0 rename the sessionRunner to connRunner 2022-03-27 11:27:25 +01:00
Marten Seemann
97690dc493 rename the closed session to closed conn 2022-03-27 11:27:25 +01:00
Marten Seemann
e71c236232 rename the Session to Connection 2022-03-27 11:27:23 +01:00
Rachel Chen
fd2c345152
sendQueue: ignore "datagram too large" error (#3328) 
This commit introduces additional platform-dependent checking when the
kernel returns an error. Previously, the session is terminated when
PingFrame sends a discovery packet larger than the limit. With this
commit, the error is checked, and if it is "datagram too large", the
error is ignored.

Additionally,
1. This commit re-enables MTU discovery on Windows unless it
is disabled explicitly by user (Undo #3276),
2. Set IP_DONTFRAGMENT and IPV6_DONTFRAG with error checking on Windows,
   and
3. Set IP_MTU_DISCOVERY to PMTUDISC_DO for both IPv4 and IPv6 on Linux
   so that the kernel will return "message too long".

Fixes #3273 #3327
 2022-02-20 00:21:32 -08:00
Marten Seemann
d410b590e9 disable Path MTU Discovery on Windows 2021-09-17 18:24:26 +02:00
Marten Seemann
dbb517858e fix incorrect usage of errors.Is 
errors.Is is supposed to used for equality of errors, not for type
assertions. That's what errors.As is there for.
 2021-06-28 15:29:52 -07:00
Marten Seemann
1613809ba2 use the new error types to log the reason why a connection is closed 2021-05-03 14:00:41 +07:00
Marten Seemann
93cfef57ca expose a StatelessResetError 2021-05-01 09:39:51 +07:00
Marten Seemann
592fb9cad9 introduce a dedicated qerr.TransportError and qerr.ApplicationError 2021-05-01 09:38:48 +07:00
Marten Seemann
d2739abd74
Merge pull request #3148 from lucas-clemente/fix-on-loss-detection-busy-looping 
declare the handshake confirmed when receiving an ACK for a 1-RTT packet
 2021-04-30 23:57:17 +07:00
Marten Seemann
0413afd615
Merge pull request #3153 from lucas-clemente/trace-version-selection 
trace and qlog version selection / negotiation
 2021-04-28 18:13:18 +07:00
Marten Seemann
e7c4e756ad trace and qlog version selection / negotiation 2021-04-19 11:38:10 +07:00
Marten Seemann
17d9860db6 declare the handshake confirmed when receiving an ACK for a 1-RTT packet 
... on the client side. Both the receipt of HANDSHAKE_DONE and the
receipt of an ACK for a 1-RTT packet are sufficient for declaring
confirmation of the handshake.
 2021-04-14 22:33:45 +07:00
Marten Seemann
4917760726 attach a tracing ID to the session context 2021-04-14 16:39:41 +07:00
Marten Seemann
e3f36af2e2
Merge pull request #3109 from lucas-clemente/version-negotiation-logging 
don't pass the QUIC version to the StartedConnection event
 2021-04-02 19:29:55 +07:00
Marten Seemann
4b10e67bf1
Merge pull request #3132 from lucas-clemente/amplification-limit-fixes 
various amplification limit fixes
 2021-04-02 18:32:38 +07:00
Marten Seemann
431a1fa650
Merge pull request #3120 from lucas-clemente/fix-handshake-idle-timeout 
fix calculation of the handshake idle timeout
 2021-04-02 18:32:24 +07:00
Marten Seemann
63e810f0d8 fix calculation of the handshake idle timeout 2021-04-02 18:19:38 +07:00
Marten Seemann
7f55fc7107
Merge pull request #3138 from lucas-clemente/pmtud-after-handshake-confirmation 
only start PMTUD after handshake confirmation
 2021-04-02 18:02:40 +07:00
Marten Seemann
22daaf4536 don't call ClosedConnection when closing for version negotiation 2021-04-02 17:35:20 +07:00
Marten Seemann
c30a45ef6f don't pass the QUIC version to the StartedConnection event 
The version might change in response to a Version Negotiation packet.
 2021-04-02 17:33:49 +07:00
Marten Seemann
6c0142cb4c notify the sent packet handler about all received bytes 2021-04-02 17:20:53 +07:00
Marten Seemann
91629cd979 only start PMTUD after handshake confirmation 
Our PMTUD packets are never coalesced packets. Since we try packing
coalesced packets until the handshake is confirmed, it makes sense to start
PMTUD then.
 2021-04-02 17:07:00 +07:00
Marten Seemann
04fe1ea7bf remove unneeded testutils.ComposeConnCloseFrame helper function 2021-03-20 09:57:04 +08:00
Marten Seemann
7d6be20fdc remove unneeded testutils.ComposeAckFrame helper function 2021-03-20 09:55:26 +08:00
Marten Seemann
5073e300a6
Merge pull request #3092 from lucas-clemente/version-negotiation-failure-logging 
make it possible to detect version negotiation failures in logging, fix qlogging of those
 2021-03-16 22:17:34 +08:00
Marten Seemann
1d2756f9f7
Merge pull request #3085 from lucas-clemente/client-hold-tp-until-handshake-completion 
only apply server's transport parameters after handshake completion
 2021-03-16 22:16:46 +08:00
Marten Seemann
5208845191 introduce a logging.CloseReason for version negotiation errors 2021-03-15 13:36:45 +08:00
Marten Seemann
c27f5a55b3 rename sendStream.handleMaxStreamDataFrame to updateSendWindow 2021-03-12 13:36:23 +08:00
Marten Seemann
d970a1027d only apply server's transport parameters after handshake completion 
On the client side, 0-RTT packets have to be sent using the old
transport parameters. We're only allowed to use the updated values for
1-RTT packets.
 2021-03-11 18:58:22 +08:00
Marten Seemann
8a0b1dd78d remove unused error return value from HandleMaxStreamsFrame 2021-03-07 12:36:50 +08:00
Marten Seemann
f513437854
Merge pull request #3062 from lucas-clemente/fix-retry-draft-34 
fix retry key and nonce for draft-34
 2021-03-04 11:13:34 +08:00
Marten Seemann
bd172b2a5a fix retry key and nonce for draft-34 2021-03-03 23:01:42 +08:00
Marten Seemann
ac87292e87 start path MTU discovery when the handshake completes 2021-03-03 12:00:51 +08:00
Marten Seemann
82ac6dcf6d rename MaxReceivePacketSize to MaxPacketBufferSize 
We use the same buffer size for sending and receiving packets.
 2021-03-03 12:00:14 +08:00
Marten Seemann
53270dde9e only read multiple packets at a time after handshake completion 
It's more important that acknowledge packets in a timely manner before
handshake completion. On the server side, we should send out the HANDSHAKE_DONE
frame as soon as possible.
 2021-03-03 11:33:00 +08:00
Marten Seemann
6ece64d8a5 log connection IDs without the 0x prefix 2021-02-11 09:45:40 +08:00
Marten Seemann
281e8ca7c0 prioritize receiving packets over sending out more packets 2021-01-20 12:47:56 +08:00
Marten Seemann
2c2b758dee allow sending of ACKs when pacing limited 
An endpoint that is only receiving data won't have an accurate estimate
of the congestion window, and therefore derive a very low pacing
frequency.
In this situation it still needs to be able to send frequent ACKs to the
peer in order to allow full utilization of the bandwidth. We therefore
need to allow ACKs even when pacing-limited.
 2021-01-19 11:49:31 +08:00
Marten Seemann
b81a6f875b don't generate new packets when the send queue is full 2021-01-17 16:18:17 +08:00
Marten Seemann
f1c6421845 introduce an interface for the send queue, use a mock in session tests 2021-01-17 16:18:17 +08:00
Marten Seemann
e9848fadf9 remove stay print statement from session test 2021-01-17 16:18:03 +08:00
Marten Seemann
219ced5437 allow receiving of multiple packets before sending a packet 
By draining the channel holding received packets, we reduce the number
of spurious ACKs we send. We also make sure that sending and receiving
packets is balanced, as we allow sending of a large number of packets
(if we have cwnd available and the pacing frequency is high enough).
 2021-01-17 14:26:12 +08:00
Marten Seemann
4bdccca0cf
Merge pull request #2980 from lucas-clemente/fix-pacing-deadline-interpretation 
fix interpretation of time.Time{} as a pacing deadline
 2021-01-16 14:08:27 +08:00
Marten Seemann
33d058f4ee fix interpretation of time.Time{} as a pacing deadline 
The pacer returns the zero value of time.Time when a packet can be sent
immediately. The session uses the zero value to unset the pacing
deadline.
 2021-01-16 13:35:21 +08:00
Marten Seemann
26565b023b introduce a separate queue for undecryptable packets 
We should prioritize the decryption of previously undecryptable packets,
every time a new encryption level becomes available. This is achieved
by introducing a separate queue instead of just putting the packets back
into the receivedPackets channel.
This also allows us to only count every received packet once for the
amplification limit.
 2021-01-07 12:58:17 +08:00
Marten Seemann
ad7d90779a remove unused initialVersion variable in session 2020-12-18 12:00:17 +07:00