HttpWebRequest doesn't work except when fiddler is running
This is probably the weirdest problem I have run into. I have a piece of code to submit POST to a url. The code doesn't work neither throws any exceptions when fiddler isn't running, However, when fiddler is running, the code posts the data successfuly. I have access to the post page so I know if the data has been POSTED or not. This is probably very non-sense, But it's a situation I am running into and I am very confused.
byte[] postBytes = new ASCIIEncoding().GetBytes(postData);
HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://myURL);
req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10";
req.Accept = "application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
req.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
req.Headers.Add("Accept-Language", "en-US,en;q=0.8");
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = postBytes.Length;
req.CookieContainer = cc;
Stream s = req.GetRequestStream();
s.Write(postBytes, 0, postBytes.Length);
s.Close();
Answer
If you don't call GetResponseStream() then you can't close the response. If you don't close the response, then you end up with a socket in a bad state in .NET. You MUST close the response to prevent interference with your later request.