System.Net.Browser.ClientHttpWebRequestInternal.BeginGetResponse C# (CSharp) Method

		public override IAsyncResult BeginGetResponse (AsyncCallback callback, object state)
		{
			// under SL the callback MUST call the EndGetResponse, so having no callback is BAD
			// this also means that faking a synch op using EndGetReponse(BeginGetReponse(null,null)) does NOT work
			if (callback == null)
				throw new NotSupportedException ();

			// copy Method, Cookies and Headers to System.dll's HttpWebRequest

			try {
				if (Credentials != null) {
					NetworkCredential nc = Credentials.GetCredential (RequestUri, String.Empty);
					set_credentials.Invoke (request, 
						ClientReflectionHelper.BuildCredentials (nc.UserName, nc.Password, nc.Domain));
				}

				if ((CookieContainer != null) && (CookieContainer.Count > 0)) {
					string cookieHeader = CookieContainer.GetCookieHeader (RequestUri);
					if (!String.IsNullOrEmpty (cookieHeader))
						ClientReflectionHelper.SetHeader (headers, "Cookie", cookieHeader);
				}

				if (ContentType != null) {
					set_content_type.Invoke (request, new object [] { ContentType } );
				}

				if (Headers.Count > 0) {
					string [] keys = Headers.AllKeys;
					foreach (string key in keys) {
						// we cannot set "Content-Type" using the headers
						if (String.Compare (key, "content-type", StringComparison.OrdinalIgnoreCase) != 0)
							ClientReflectionHelper.SetHeader (headers, key, Headers [key]);
					}
				}

				IAsyncResult async_result = new HttpWebAsyncResult (callback, state);
				asyncResult = (IAsyncResult) begin_get_response.Invoke (request, 
					new object [2] { new AsyncCallback (EndCallback), async_result });
				return async_result;
			}
			catch (TargetInvocationException tie) {
				throw tie.InnerException;
			}
		}