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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve worked on a forked variant of spread in the
recent past. I’m planning on posting a few of the more useful bits of
the variant fairly soon. Anyways we did have a watchdog facility in our
variant. It worked by having an API that scheduled a timed event to the main client
event loop (i.e. an E_queue() call). The callback the API specified would send
a heartbeat message to the local spread daemon and schedule another upcall.
The spread-daemon had an aliveness counter for each socket that if it wasn’t
updated in a certain number of seconds would cause various things to happen.
In our case we took the entire spread daemon down, but in your case it could
simply do a sess_kill() on the offended socket, which would in turn cause
membership to change.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>t.<o:p></o:p></span></font></p>
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