I'm seeing this WebException pop up randomly when connecting to an ASP.NET
1.1 Web Service using integrated authentication:

System.Net.WebException: The underlying connection was closed: An
unexpected error occurred on a send.
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse
(WebRequest request)
at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse
(WebRequest request)
<etc, etc>

I've seen others squawking about this one in various support newsgroups,
and I've seen work-arounds that relate to disabling HTTP keep-alives.
While this appears to work for anonymous access, it definitely does not
work for integrated authentication as integrated authentication requires
keep-alives to function properly.

Has anyone else come across a way to prevent this exception from
occurring? Is there a server-side fix or a client-side work-around that
supports integrated authentication?

Many thanks!
-Andy Hopper

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