Experimental Physics and
Industrial Control System

I think the 'send(NULL)' pattern is a race condition as it depends on a TCP reset message having arrived prior to the second send(NULL) call.  With real network latency I don't think it will work as intended to quickly and reliably detect when the preceding send() elicits a RST.

I'm not going to insist on a change here because I don't think it will break anything.  The RST just won't be handled (via. EPIPE) unless the next time the log queue is flushed, and send() is called again.
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[Merge] ~dirk.zimoch/epics-base:iocLogClientFixesTry2 into epics-base:7.0 Dirk Zimoch via Core-talk

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