Issue received on Google group. Any insightes? Xaio Xiang? There have
been a lot of networking changes recently.
Most issues will, like this, be received via email. Not entered into
github issues.
Greg
-------- Forwarded Message --------
Subject: [nuttx] Network issues on recent master
Date: Fri, 10 Jan 2020 08:46:03 -0800 (PST)
From: Rob Voisey <r...@fenconsultants.com>
Reply-To: nu...@googlegroups.com
To: NuttX <nu...@googlegroups.com>
Hi
I'm seeing some problems on master. I haven't check against an older
version yet as it's quite a job moving between v7 and v8 but if this
doesn't ring a bell for anyone I'll try that next. I've spent a lot of
time tracing network code already.
1. SO_RCVTIMEO not working.
I set SO_RCVTIMEO on a UDP socket but the recvfrom hangs indefinitely
while no data is received. It's waiting on ir_sem because nothing
runs inet_udp_eventhandler to let the timeout code run. If I comment out
the devif_event_trigger test in devif_conn_event to run the handler on
Ethernet driver polls (which it doesn't normally accept) this works
around the problem and the timeout code runs correctly.
As an aside setsockopt appears to clear the s_options SO_RCVTIMEO bit if
a timeout is set and vice versa. That looks backwards to me, although I
don't think that bit is used directly other than by getsockopt.
2. TCP close not working.
If I call close on a TCP socket it does not send a FIN | ACK and then
hangs up waiting for the response. If I close the other end it receives
the FIN | ACK which it interprets as a response and finishes closing the
socket.
I'm guessing many people would be shouting about them if these were
really network stack bugs but I've no idea what else I might be missing.
Any thoughts appreciated.
Thanks
Rob
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