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    <p>Try:</p> <pre><code>private static DnsEndPoint IP_END_POINT = new DnsEndPoint("192.168.0.36", 4525, AddressFamily.InterNetwork); public MainPage() { try { InitializeComponent(); socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); SocketAsyncEventArgs connectEventArgs = new SocketAsyncEventArgs(); connectEventArgs.RemoteEndPoint = IP_END_POINT; connectEventArgs.Completed += new EventHandler&lt;SocketAsyncEventArgs&gt;(ConnectionEstablished); if(!socket.ConnectAsync(connectEventArgs)) { ConnectionEstablished(/*Insert Args*/); //Handle real time execution } } catch (Exception e) { //write error somewhere } } </code></pre> <p>The <a href="http://msdn.microsoft.com/en-us/library/bb538102%28v=vs.95%29.aspx" rel="nofollow">documentation</a> indicates if <code>ConnectAsync</code> returns false then "The SocketAsyncEventArgs.Completed event on the System.Net.Sockets.SocketAsyncEventArgs object passed in the e parameter will not be raised."</p> <p>Also, make sure you are logging the exception somewhere. There might be an exception which you are just breezing past.</p> <p><strong>Update</strong>:</p> <ul> <li>Did you check the <a href="http://msdn.microsoft.com/en-us/library/cc645032%28v=vs.95%29.aspx" rel="nofollow">ClientAccessPolicy.xml</a> file? You would need to replace all the “ and ” characters with ".</li> <li>Have you tried adding <code>connectEventArgs.UserToken = socket;</code> before the <code>ConnectAsync(connectEventArgs)</code> call?</li> <li>Is the server receiving the request and sending a reply (may require the use of <a href="http://www.wireshark.org/download.html" rel="nofollow">Wireshark</a> on the client)?</li> <li>While debugging does <code>connectEventArgs.Completed</code> point to the correct method?</li> <li>While debugging, what happens if you "Step Over" (F10) until the method returns? Are other methods called?</li> <li>While debugging, if you "Step Over" (F10) <code>socket.ConnectAsync(connectEventArgs)</code> (but are still in the method) are there other threads in the Debug>Windows>Threads window? What happens if you switch to the other thread (right click on thread and select "Switch To Thread" or double click the thread)?</li> </ul> <p>Let me know how things turn out.</p>
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    1. POWhy does my Silverlight Socket Policy File not work?
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    1. COModified to this specification, and in debugging, it hits the '!socket.ConnectAsync()', catches a 'false' evaluation ( of this logic ), and continues to return. ( ConnectAsync returns true )
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      1. USDigitalJedi805
    2. CO@DigitalJedi805 I added some additional trouble shooting options.
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    3. CO@DigitalJedi805 Sorry, missed your update. I would suggest using Wireshark to verify the network configuration matches the ClientAccessPolicy you are serving.
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