I have an ASP.NET website to which I can upload files via HTTP POST. I have a proxy server acting as a reverse proxy, running Squid 3.3.4 on Ubuntu. POSTing a small file (under 300kb or so) works fine, however larger files fail, giving me a 502 error and a message about a zero sized reply. This setup was previously working fine for some time using Squid 3.1.9, however we recently had to upgrade our servers due to a separate issue. What could cause this to fail in this manner when it worked with the older version of Squid? The configs for both are almost identical, apart from some minor changes that were necessary for the later version to work, and none of them would obviously affect this. The message given is: The following error was encountered while trying to retrieve the URL: [URL OMITTED] Zero Sized Reply Squid did not receive any data for this request. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-3-3-4-Zero-Sized-Reply-for-HTTP-POST-tp4665601.html Sent from the Squid - Users mailing list archive at Nabble.com.