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HTTP WebRequest timing out due to Keep-Alives

Hi there.

This looks like a good place to get help with a problem I am having:
- We have a c# windows app, which performs an HTTPWebRequest to a IIS box on
Internet to retrieve an XML response.
- In our test + develop environment this works wonderfully. We have it
working through ISA server and also without ISA server.
- At our client site however, the application times out. This appears to be
caused by Keep Alives.

Here's what's happening when we run at our client site:
- if the IIS server (servicing the HTTP GET request) has Keep Alives
enabled, then our application takes as long as the timeout the IIS has
configured to return. Effectively timing out as our timeout for the request
is set at 30 seconds, and the IIS server has 120 seconds for the keepalives.
(If we change our app to time out after 130 seconds, things work fine).
- if the IIS server has Keep Alives disabled, the request processes as we
expect, within a second or two. Wonderful. However, the owner of the IIS
box is not prepared to leave setting off.
- If we configure our app to not use Keep-Alives, we can't connect out
through our client's proxy server (WebMarshal). We get a 407 authentication
required.
- we have tried various proxy settings and I have tested to confirm this is
configured correctly - trouble is it dunna work without keep-alives enabled
in our app.

Help?!

Without changing WebMarshal configuration, and without changing the remote
IIS server configuration, what can we do to make the request work?
Thanks, Mike.
Nov 23 '05 #1
0 1687

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