Wikimedia Bugzilla is closed!

EventLogging includes a web server intended to handle requests for its beacon image, *only* during development.  I find it works for a while, then goes unresponsive.

The last time this happened it also went to 100% of my CPU.  strace shows endless
    recvfrom(4, "", 1024, 0, NULL, NULL)    = 0
and lsof show that file descriptor 4 is 

COMMAND   PID  USER   FD   TYPE  DEVICE SIZE/OFF    NODE NAME
php     23276 spage    4u  IPv4 1437730      0t0     TCP localhost:tproxy->localhost:40721 (CLOSE_WAIT)

Workaround: kill -9  and restart.  (For some reason a regular kill doesn't take, despite the code to "exit cleanly on SIGTERM".)