[lwip-devel] [bug #23726] pbuf pool exhaustion on slow recv()

[Thomas Taranowski]

Follow-up Comment #7, bug #23726 (project lwip):

Regarding the initial question, the socket in question was UDP.  I see some
mention here that SO_RCVBUF has been implemented, and I see it in CVS head.  I
believe that solution will work for my needs, with the following tweak in
netconn_alloc():
  conn->recv_bufsize = INT_MAX
to
  conn->recv_bufsize = RECV_BUFSIZE //as defined in my opts.h, and
lwip_opts.h, as Simon mentions.

I see this feature was implemented by Frederic back in Novemeber, so my bad
for not seeing it.  If we implement Simon's proposed mod to default to a sane
recvbuf size (num pbufs/2 or something similar), as defined in opts.h, rather
than INT_MAX, then this bug can be closed out.






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