- Always split segments larger than MSS.
Currently, we base the segment split decision as a function of the
send congestion window and MSS, which could be greater than the MSS
advertised by remote.
- While splitting segments, ensure the PSH flag is reset when there
are segments that are queued to be sent.
- With TCP_CORK, hold up segments up until MSS. Fix a bug in computing
available send space before attempting to coalesce segments.
Fixes#2832
PiperOrigin-RevId: 314802928
Previously the test used an out-dated window size which is advertised
during the handshake to generate testing packets, but the window size
has changed since the handshake; currently it is using the most recent
one which is advertised in DUT's ACK to our FIN packet to generate the
testing outside-the-window packets.
PiperOrigin-RevId: 309222921
TCP, in CLOSE-WAIT state, MUST return ACK with proper SEQ and ACK numbers after
recv a seg with OTW SEQ or unacc ACK number, and remain in same state. If the
connection is in a synchronized state, any unacceptable segment (out of window
sequence number or unacceptable acknowledgment number) must elicit only an empty
acknowledgment segment containing the current send-sequence number and an
acknowledgment indicating the next sequence number expected to be received, and
the connection remains in the same state.
PiperOrigin-RevId: 306897984
Mithun Iyer
gVisor bot
Zeling Feng