Question

When I am using HttpWebRequest and add this:

CookieContainer container = new CookieContainer();
request.CookieContainer = container;

it will throw an Operation Timeout exception in

HttpWebResponse response = request.GetResponse() as HttpWebResponse;

If I don’t add the CookieContainer the program runs without errors. Why doesn’t this work?

Answer 1

How are you creating Request object??

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(args[0]);
            request.CookieContainer = new CookieContainer();
            HttpWebResponse response = (HttpWebResponse) request.GetResponse();

CookieContainer

Try to set myWebRequest.Timeout =xxx

• If you are running multiple concurrent requests try setting connections limit

System.Net.ServicePointManager.DefaultConnectionLimit
ServicePoint.ConnectionLimit

Check these links for more information:

HttpWebRequest "operation has timed out"
I need help setting .NET HttpWebRequest timeout
Adjusting HttpWebRequest Connection Timeout in C#

here are many reasons why GetResponse() might hang. Some are:

1) You have reached the connection limit on the client ( 2 conns per http/1.1 server, 4 connections per http/1.0 server, or custom limit set on the ServicePoint), and no connection is free to send a request to the server. In other words, you might have 2 requests outstanding (eg: to a 1.1 server) which are taking more than 2 minutes to complete, and then issue another GetResponse() to the same server. The last getresponse() might time out.

2) You have not closed the response stream of an earlier httpwebresponse. So, even if a connection is free, the request wont be sent.

3) The server is taking too long to send the response.