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    <p>The response would be available when the callback function RespCallback is invoked. I don't know what <code>reqState</code> has, but I assume it contains a reference to the original HttpWebRequest object. If this is the case, this would be a simple implementation of the RespCallback method:</p> <pre><code>void RespCallback(IAsyncResult asyncResult) { ReqState reqState = (ReqState)asyncResult.AsyncState; HttpWebResponse resp = (HttpWebResponse)reqState.Request.EndGetResponse(asyncResult); // do what you need with the response. } </code></pre> <p><em>Update: more info as asked in the comment</em></p> <p>If you want the response in the same method where you did the Begin call, you can have an event which will be set when the callback is received, and you can wait on that event after the Begin call, like in the example below</p> <pre><code>class ReqState { public HttpWebRequest Request { get; set; } public HttpWebResponse Response { get; set; } public AutoResetEvent Evt { get; set; } } void RespCallback(IAsyncResult asyncResult) { ReqState reqState = (ReqState)asyncResult.AsyncState; reqState.Response = (HttpWebResponse)reqState.Request.EndGetResponse(asyncResult); reqState.Evt.Set(); } void CallMethod() { HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(...); // set properties on req ReqState state = new ReqState(); state.Request = req; state.Evt = new ManualResetEvent(false); req.BeginGetResponse(RespCallback, state); state.Evt.WaitOne(TimeSpan.FromSeconds(30)); // wait for 30 seconds // access response via state.Response } </code></pre> <p>Now notice that you're essentially doing a synchronous call in an asynchronous way. That gives you more control over the timeout, but with the price of code complexity. Another thing, this will not work on platforms such as Silverlight (and Windows Phone, IIRC), where synchronous calls (even those dressed up as asynchronous) are forbidden.</p>
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    1. POBuilding workaround for HttpWebRequest timeout issue
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    1. UScarlosfigueira
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    1. COBut my question was how do you handle this when your in a synchronous scenario such as an aspx page or in my case a wcf service call. How do I pause my code to wait for the callback?
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    2. COUpdated the response with the answer for this comment
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