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<== Date ==> <== Thread ==>

Subject: TCP_NODELAY option set failed
From: Michael Davidsaver <mdavidsaver@bnl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Cc: "Chabot, Daron" <dchabot@bnl.gov>
Date: Tue, 17 May 2011 10:55:01 -0400
Cexp>
Cexp>CAS: TCP_NODELAY option set failed

I happened to notice this error in the log of one of our IOCs. I've not seen it before. It only happened once, but seemed suitable strange to be worth reporting.

EPICS 3.14.11
RTEMS 4.9.3 on a mvme3100

Also deviocstats and the new mrfioc2 timing driver. The IOC was functioning correctly when I checked it.

It looks like this error comes from create_tcp_client() in caservertask.c when setsockopt() for the NODELAY socket option fails for a newly connected CA client. Since I only see one message I assume the client was able to connect successfully on a retry.

Has anyone else seen this error?


Thanks,
Michael


Replies:
RE: TCP_NODELAY option set failed Jeff Hill

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