possible misbehavior with HEAD request before GET
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Key: TS-532
URL: https://issues.apache.org/jira/browse/TS-532
Project: Traffic Server
Issue Type: Bug
Components: HTTP
Environment: we have many haproxy before the TS server, do L7 hashing
for all request
Reporter: Zhao Yongming
Priority: Trivial
sometimes there is many HEAD request flood in, looks like cache in loop, but TS
does not identify it as a loop.
as the HEAD request will all pass to OS, that will make OS unable to response
for sometime? get 1-5k connections, make TS get throttling.
here is some tcpdum cap file
why I suspect HEAD request, is when I ban all HEAD request use quick filter
mask, the connection rush is gone.
but this could be other problem indeed. just open this bug for logging.
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