[lwip-devel] [bug #20506] HTTP server doesn't call tcp_output

[Simon Goldschmidt]

Follow-up Comment #33, bug #20506 (project lwip):

The point to change it is line 567 for passive open: ACK (probably including
data) received after SYN - SYNACK in state SYN_RCVD.

For active open, this is line 151: SYN ACK received in state SYN_SENT.

I think in both cases, we should check if the previous cwnd is 1 (in case of
state SYN_RCVD: before calling tcp_receive, because that changes the cwnd),
set it to 2 mss if so and set it to 1 mss (like it is now) if it is != 1.

With that solution, we make sure all other cwnd = mss situations (restart...)
are kept like they are, since only the initial window (when a connection is
not in ESTABLISHED) is changed.

Any objections?

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