[lwip-devel] [bug #23559] lwip_recvfrom problem with tcp

[Frédéric Bernon]

Follow-up Comment #1, bug #23559 (project lwip):

I'm not sure to understand:

if "socket->lastdata!= NULL", this part of the code (the "if (!buf)..." ) is
not called. It is only call when "socket->lastdata==NULL": in this case, we
have to fetch a netbuf with netconn_recv. If this last call returns NULL, it
could be :

- due to a RCVTIMEO, or
- due to an error.

But in this case, but perhaps I'm wrong, it's not right to return "off"
(since no data is returned).


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