[lwip-devel] [bug #27215] http_sent() gives trailing 1 byte len [raw]

[Simon Goldschmidt]

Follow-up Comment #1, bug #27215 (project lwip):

I have just been debugging this and the 1 byte is of course the FIN being
acked. The same problem exists with the initial SYN, which is because the
http_sent function always gets called with 2 bytes more than the file size
(unless tcp_sent is called to reset the callback too early, of course).

Since at the point the sent function is called (in tcp_input), we could only
rely on the pcb's state, I guess (in case of SYN received, the state *before*
the syn is actually processed).

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