[squid-users] Fwd: Webapp problems with squid 2.7.STABLE3

Hi all,

I'm running Squid 2.7.STABLE3. I just moved off of 2.6.STABLE12.

We run a USPS webapp called Shipping Assistant. With 2.6, this app
worked fine. During my upgrade, I introduced no config changes. With
2.7, this app is broken. Comparing a tcpdump of the app talking direct
and then the app talking to squid, it appears that squid borks over
HTTP 1.1 (or the "Expect" directive) and throws an invalid request
error (ERR_INVALID_REQ 0). Here is a bit of the short conversation
between the app and squid:

--begin--

POST http://production.shippingapis.com/ShippingApi.dll HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Host: production.shippingapis.com
Content-Length: 395
Expect: 100-continue
Proxy-Connection: Keep-Alive

HTTP/1.0 417 Expectation failed
Server: squid/2.7.STABLE3
Date: Thu, 08 Jan 2009 15:50:16 GMT
Content-Type: text/html
Content-Length: 1402
Expires: Thu, 08 Jan 2009 15:50:16 GMT
X-Squid-Error: ERR_INVALID_REQ 0
X-Cache: MISS from squidserver
X-Cache-Lookup: NONE from squidserver:3128
Via: 1.0 squidserver:3128 (squid/2.7.STABLE3)
Connection: keep-alive
Proxy-Connection: keep-alive

POST http://production.shippingapis.com/ShippingApi.dll HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Host: production.shippingapis.com
Content-Length: 395
Expect: 100-continue
Proxy-Connection: Keep-Alive

HTTP/1.0 417 Expectation failed
Server: squid/2.7.STABLE3
Date: Thu, 08 Jan 2009 15:50:16 GMT
Content-Type: text/html
Content-Length: 1402
Expires: Thu, 08 Jan 2009 15:50:16 GMT
X-Squid-Error: ERR_INVALID_REQ 0
X-Cache: MISS from squidserver
X-Cache-Lookup: NONE from squidserver:3128
Via: 1.0 squidserver:3128 (squid/2.7.STABLE3)
Connection: keep-alive
Proxy-Connection: keep-alive

--end--

I'd attach the dumps, but they contain account related data.

Any thoughts appreciated.

Kind Regards,

--
Christopher Nighswonger
Faculty Member
Network & Systems Director
Foundations Bible College & Seminary
www.foundations.edu
www.fbcradio.org