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POWCF Peer to peer chat
 

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    <p>I wrote some code for a WCF P2P chat program.</p> <pre><code>&lt;services&gt; &lt;service name="PeerChat.Form1"&gt; &lt;host&gt; &lt;baseAddresses&gt; &lt;add baseAddress="net.p2p://PeerChat/" /&gt; &lt;/baseAddresses&gt; &lt;/host&gt; &lt;endpoint name="PeerChatEndPoint" address="" binding="netPeerTcpBinding" bindingConfiguration="BindingUnsecure" contract="PeerChat.IChatService" /&gt; &lt;/service&gt; &lt;/services&gt; &lt;bindings&gt; &lt;netPeerTcpBinding&gt; &lt;binding name="BindingUnsecure"&gt; &lt;resolver mode="Pnrp" /&gt; &lt;security mode="None" /&gt; &lt;/binding&gt; &lt;/netPeerTcpBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint name="PeerChatClientEndPoint" address="net.p2p://PeerChat/" binding="netPeerTcpBinding" bindingConfiguration="BindingUnsecure" contract="PeerChat.IChatService" /&gt; &lt;/client&gt; </code></pre> <p>I then host the service as follows:</p> <pre><code>[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)] public partial class Form1 : Form, IChatService { IChatService channel; ServiceHost host = null; ChannelFactory&lt;IChatService&gt; channelFactory = null; private void StartService() { //Instantiate new ServiceHost host = new ServiceHost(this); //Open ServiceHost host.Open(); //Create a ChannelFactory and load the configuration setting channelFactory = new ChannelFactory&lt;IChatService&gt;("PeerChatClientEndPoint"); channel = channelFactory.CreateChannel(); //Lets others know that someone new has joined channel.SendMessage("Hello."+ Environment.NewLine); foreach (var cloud in Cloud.GetAvailableClouds()) { textBox2.Text += cloud.Name + Environment.NewLine; } } private void StopService() { if (host != null) { channel.SendMessage("Bye." + Environment.NewLine); if (host.State != CommunicationState.Closed) { channelFactory.Close(); host.Close(); } } } </code></pre> <p>The problem is I can send a message to the same instance of the program but not to another instance. Ie an instance only receives its own messages not messages from other instances. Not sure if it is a matter of configuring PNRP correctly? I tested on Windows 7. </p>
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