ASP.Net Post timeout

Question

I am stuck with asp.net post issue with last 2 weeks.

Scenario:

My application page has 3 controls. A WYSIWYG editor (Free Textbox), a text

Answer 1

I have face the same error on one web page. Its was very wired because if I was use proxy, the error go way, if I was called from my computer direct I have time out, and never go on.

The site that this issue appear until now Dec/2011 is the http://www.auctionsniper.com/ The same site works if I go with the mobile version of it.

After many checks with the above site I discover that the problem was with the very big viewstate !. How I find it: I save an html part of my page, as its rendered and start remove items from the html and make post, until I discover that the post continue when I cut down the viewstate post.

The solution was to disable viewstate on many non needed controls and compress+cut in smaller part the remaining viewstate post data.

You can google and find many ways to compress and cut the view state in parts.

Some articles:

http://msdn.microsoft.com/en-us/magazine/cc188774.aspx

how to cut it tutorial:
http://www.dotnetfunda.com/articles/article634-viewstate-patterns-in-aspnet-.aspx

how to compress it
http://www.hanselman.com/blog/ZippingCompressingViewStateInASPNET.aspx
http://www.codeproject.com/KB/viewstate/ViewStateCompression.aspx
http://www.google.com/search?hl=en&safe=off&q=asp.net+compress+viewstate&aq=f&aqi=g1g-b2&aql=f&oq=

Ps: In this demo page of the free TextBox that you use, the viewstate is huge ! and its even empty from text, imagine how big the viewstate can be if you actual have and text inside. Not so free - the cost is the huge viewstate.

Follow up

As Jeyara say on the comments below, final this was the error, a blocking of large post files by a firewall on the hosting server.

So the error / timeout have to do with large post back data and its a rare but existing issue.