Multiple HTTP request in C#

Question

I need to send about 200 HTTP requests in parallel to different servers and get response. I use HttpWebRequest class in C#. But I don\'t see good time enhancement when requests

Answer 1

Instead of starting up your own threads try using the asynchronous methods of HttpWebRequest such as HttpWebRequest.BeginGetResponse and HttpWebRequest.BeginGetRequestStream.

Answer 2

you can try this :

try
        {
            List<Uri> uris = new List<Uri>();
            uris.Add(new Uri("http://www.google.fr"));
            uris.Add(new Uri("http://www.bing.com"));

            Parallel.ForEach(uris, u =>
           {
               WebRequest webR = HttpWebRequest.Create(u);
               HttpWebResponse webResponse = webR.GetResponse() as HttpWebResponse;
           });
        }
        catch (AggregateException exc)
        {
            exc.InnerExceptions.ToList().ForEach(e =>
                {
                    Console.WriteLine(e.Message);
                });
        }

Answer 3

This is the code of android application of sending the request. How can we use the upper code like:

params.add(new BasicNameValuePair("key", "value");
HttpPost request = new HttpPost();
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("key", "value");// How can we give the value in this format format
post.setEntity(new UrlEncodedFormEntity(params));

httpClient.execute(request);

Answer 4

Use asynchronous web requests in stead.

Edit: http://msdn.microsoft.com/en-us/library/86wf6409(VS.71).aspx

Answer 5

This might help - http://social.msdn.microsoft.com/forums/en-US/netfxnetcom/thread/1f863f20-09f9-49a5-8eee-17a89b591007

Suggests there is a limit on the number of TCP connections allowed, but that you can increase the limit