Do not send connection close header when Expect header is in request

[InoMurko]

Based on http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.3 server should not respond with a header Connection: close.

[etrepum]

I'm not entirely sure this is correct as it may also prevent the connection from being closed with http 1.0 and possibly other scenarios when it should close. Tests to demonstrate that this does what it's supposed to would be fantastic.

[InoMurko]

Well I guess it is not a matter of right and wrong but I've experienced weird behaviour from webdav clients when this header was present.

Apache mod_dav is sending only 100 Continue, for example.

[etrepum]

Yes, I can certainly see how there might be a situation where it may be difficult to write correct code with the current behavior. Without tests, it's hard to demonstrate that this is sufficient to fix the problem you're having, and that it doesn't cause other sorts of regressions along the way.