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Posted to bugs@httpd.apache.org by bu...@apache.org on 2002/09/12 00:39:31 UTC
DO NOT REPLY [Bug 12551] New: -
mod_proxy fails to shutdown when client cancels
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mod_proxy fails to shutdown when client cancels
Summary: mod_proxy fails to shutdown when client cancels
Product: Apache httpd-1.3
Version: 1.3.26
Platform: PC
OS/Version: Linux
Status: NEW
Severity: Normal
Priority: Other
Component: mod_proxy
AssignedTo: bugs@httpd.apache.org
ReportedBy: noel@burton-krahn.com
I have Apache-1.3.26 proxying requests to another back-end http server. If
the client cancels a connection while sending the parameters, the proxied
server does not see the connection close, and it hangs.
1. start a long file upload request
2. apache opens a new connection to the back-end
3. client cancells upload
4. the connection to apache closes
5. apache blocks reading the request from the back-end
6. since apche doesn't call shutdown() on the socket connected to the back-
end, the back-end server doesn't know the client broke the connection and
hangs waiting for more input.
See modules/proxy_http.c line 426. I think there should something like this
should be inserted on line 433:
if( i<=0) {
shutdown(1);
}
What do you think?
In the bigger scheme of things, its a bad idea for a proxy server to buffer a
whole request before reading the reply. Could mod_proxy be redone to pipe
both sides at once?
--Noel Burton-Krahn
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