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POHttpWebRequest stops working suddenly, No response received after few requests
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copied!<p>I’m working with a WPF .net 4.0 Application. I have a search bar. For each search token I need to do 8 http request to 8 separate URLs to get search results. I send 8 requests to server after 400 milliseconds once the user stops typing in search bar. Searching for 6 to 7 search-tokens results comes very nicely. But after that suddenly HttpWebRequest stops working silently. No exception was thrown, no response was received. I'm working with Windows 7, I disabled the firewall too. I don't know where the subsequent http requests are lost.</p> <p>Can anyone show me lights to fix this issue? </p> <p>Below is my code for HttpWebRequest call.</p> <pre><code>public static void SendReq(string url) { // Create a new HttpWebRequest object. HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.ContentType = "application/x-www-form-urlencoded"; request.Proxy = new WebProxy("192.168.1.1", 8000); // Set the Method property to 'POST' to post data to the URI. request.Method = "POST"; // start the asynchronous operation request.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), request); } private static void GetRequestStreamCallback(IAsyncResult asynchronousResult) { HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState; // End the operation Stream postStream = request.EndGetRequestStream(asynchronousResult); string postData = this.PostData; // Convert the string into a byte array. byte[] byteArray = Encoding.UTF8.GetBytes(postData); // Write to the request stream. postStream.Write(byteArray, 0, byteArray.Length); postStream.Close(); // Start the asynchronous operation to get the response request.BeginGetResponse(new AsyncCallback(GetResponseCallback), request); } private static void GetResponseCallback(IAsyncResult asynchronousResult) { HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState; // End the operation using(HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult)) { using(Stream streamResponse = response.GetResponseStream()) { using(StreamReader streamRead = new StreamReader(streamResponse)) { string responseString = streamRead.ReadToEnd(); Debug.WriteLine(responseString); } } } } </code></pre>

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