Hello,
I've a simple test setup. Pound + Apache2. On the webserver runs a script
that redirects the request to the very same server to another script. In
rare cases the connection (seems) to fail.
After some investigation it seems that it's easier to duplicate that
behaviour on a loaded pound server and a fast client. Running wget in
debug/verbose mode:
...after the first request...
--2009-12-09 00:00:39--
http://domain.invalid/script
Reusing existing connection to domain.invalid:80.
Reusing fd 3.
---request begin---
GET /script HTTP/1.0
User-Agent: Wget/1.11.4
Accept: */*
Host: domain.invalid
Connection: Keep-Alive
---request end---
HTTP request sent, awaiting response... No data received.
Disabling further reuse of socket 3.
Closed fd 3
Giving up.
It seems that it sends the next request just the moment before pound
closes the connection. When I put some load on the client, the requests
won't fail, because the connections are closed before wget sends the next
request.
Disabling KeepAlive on Apache2 seems to solve this problem.
Is that a known issue? Is keepalive not recommended on backend servers?
kind regards,
Matthias
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