Mohamed Lrhazi wrote:
> I actully dud this by hand and it seems Squid works fine:
>
> telnet 10.0.4.2 80
> Trying 10.0.4.2...
> Connected to 10.0.4.2.
> Escape character is '^]'.
> PURGE http://yaqb.org/test-cache/test.html HTTP/1.1
> Proxy-Connection: Keep-Alive
>
> HTTP/1.0 404 Not Found
> Server: squid/2.5.STABLE13
> Mime-Version: 1.0
> Date: Sun, 21 May 2006 21:43:42 GMT
> Content-Length: 0
>
> PURGE http://yaqb.org/test-cache/test.html HTTP/1.1
> Proxy-Connection: Keep-Alive
>
> HTTP/1.0 404 Not Found
> Server: squid/2.5.STABLE13
> Mime-Version: 1.0
> Date: Sun, 21 May 2006 21:43:56 GMT
> Content-Length: 0
>
>
> As you can see it does not close the connection so I could send an
> other request.
> Why is the connection closed when using cURL?

cURL closes the connection because Squid is not sending
"Proxy-Connection: keep-alive" in the response.

Curiously, when I try the same thing with Squid
2.5.STABLE1-9.10.legacy (from Fedora Legacy), it _does_ send
"Proxy-Connection: keep-alive" for PURGE requests that return 404 status.

You might report it as a bug in Squid 2.5, or find out if it was sent
by an earlier version of Squid and removed for some reason.

For your specific problem, you could modify libcurl to behave as if
"Proxy-Connection: keep-alive" was sent anyway. Or modify it to
assume the response from Squid is HTTP/1.1 (instead of HTTP/1.0), in
which case the "Proxy-Connection: keep-alive" is not required. Either
way, you should be careful only to use the modified libcurl for this
specific problem and not for other things, as it won't function
correctly in general.

-- Jamie
Received on 2006-05-22