Web service returns internal server error after few minutes

[enggwaqas]

I have a web service that normally takes 50 minutes to execute, howerver when it reaches to 20 minutes it gives HTTP 500 internal server error.

I tried every possible solution like
but not luck.

-Enabling the session state and increasing the session time out from IIS Application Configuration.

-Increased the request timeout from IIS asp.net configuration

-Disabling the 'Shutdown worker process thread after being idle for xxx min" from application pool properties


but still no luck

[kenobewan]

It does this by design? How much data are we talking here?

[enggwaqas]

It does this by design? How much data are we talking here?

This service is dealing with large amount of data.
We have an alternative to soap, i.e. TCP and it takes arround 50 minutes to complete and give response.

[kenobewan]

This article may help:
Learn how to send large amounts of data