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POTCP error code 10013 Cross Domain Policy Error with netTcpBinding Service and Silverlight Client
 

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  1. POTCP error code 10013 Cross Domain Policy Error with netTcpBinding Service and Silverlight Client
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    <p>Was wondeirng if anybody could get me out of my cross domain policy hell.</p> <p>I have a duplex WCF service which uses <code>netTcpBining</code>, and the client is a Silverlight 4 app. When I self host the service, then it works perfectly and my Silverlight clients can consume the service with no problems. However when I host it in IIS 7, that's when the trouble starts. When I host it in IIS I'm able to see the service at:</p> <p><code>http://localhost/Conference/VideoConferenceService.svc</code></p> <p>And when I add a reference to the service which is hosted in IIS, and try to call it, I get a:</p> <blockquote> <p>CommunicationException: Could not connect to net.tcp://localhost/Conference/VideoConferenceService.svc. The connection attempt lasted for a time span of 00:00:03.3071892. TCP error code 10013: An attempt was made to access a socket in a way forbidden by its access permissions.. This could be due to attempting to access a service in a cross-domain way while the service is not configured for cross-domain access. You may need to contact the owner of the service to expose a sockets cross-domain policy over HTTP and host the service in the allowed sockets port range 4502-4534.</p> </blockquote> <p>Or if seeing the actual error helps inspire those who have seen it before, here is what it throws at me in <code>Reference.cs</code>:</p> <p><img src="https://i.stack.imgur.com/4rhh0.png" alt="enter image description here"></p> <p>I have checked out almost every solution suggested regarding solving the cross-domain policy error, and I've put my <code>clientaccesspolicy.xml</code> in my default website root in IIS, and also in <code>wwwroot</code>. I've also turned off all my firewalls. I'm able to see the policy at <code>http://localhost/clientaccesspolicy.xml</code> and also at <code>http://127.0.0.1/clientaccesspolicy.xml</code> but I still get this error. </p> <p>Here is my web.config for the service hosted in IIS 7:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;configuration&gt; &lt;runtime&gt; &lt;gcServer enabled="true" /&gt; &lt;/runtime&gt; &lt;system.web&gt; &lt;compilation debug="false" /&gt; &lt;/system.web&gt; &lt;system.serviceModel&gt; &lt;services&gt; &lt;service name="VideoServer.VideoConferenceService"&gt; &lt;endpoint address="" binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IVideoConferenceService" contract="VideoServer.IVideoConferenceService" /&gt; &lt;endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /&gt; &lt;host&gt; &lt;baseAddresses&gt; &lt;add baseAddress="net.tcp://localhost:4502/VideoServer/" /&gt; &lt;/baseAddresses&gt; &lt;/host&gt; &lt;/service&gt; &lt;/services&gt; &lt;bindings&gt; &lt;netTcpBinding&gt; &lt;binding name="NetTcpBinding_IVideoConferenceService" portSharingEnabled="true" transactionFlow="false" transferMode="Buffered" listenBacklog="2147483647" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxConnections="2147483647" maxReceivedMessageSize="2147483647" closeTimeout="24.20:31:23.6470000" openTimeout="24.20:31:23.6470000" receiveTimeout="24.20:31:23.6470000" sendTimeout="24.20:31:23.6470000"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /&gt; &lt;reliableSession enabled="false" /&gt; &lt;security mode="None"&gt; &lt;message clientCredentialType="None" /&gt; &lt;transport protectionLevel="None" clientCredentialType="None" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/netTcpBinding&gt; &lt;/bindings&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior&gt; &lt;serviceMetadata httpGetEnabled="False" /&gt; &lt;serviceDebug includeExceptionDetailInFaults="False" /&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; &lt;system.webServer&gt; &lt;directoryBrowse enabled="true" /&gt; &lt;/system.webServer&gt; &lt;/configuration&gt; </code></pre> <p>And here is the Silverlight client's <code>ServiceReferences.ClientConfig</code> file:</p> <pre><code>&lt;configuration&gt; &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;customBinding&gt; &lt;binding name="NetTcpBinding_IVideoConferenceService"&gt; &lt;binaryMessageEncoding /&gt; &lt;tcpTransport maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" /&gt; &lt;/binding&gt; &lt;/customBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint address="net.tcp://localhost/Conference/VideoConferenceService.svc" binding="customBinding" bindingConfiguration="NetTcpBinding_IVideoConferenceService" contract="ServiceReference1.IVideoConferenceService" name="NetTcpBinding_IVideoConferenceService" /&gt; &lt;/client&gt; &lt;/system.serviceModel&gt; &lt;/configuration&gt; </code></pre> <p>Has anybody got any suggestions? This annoying error has taken days of my time thus far. Any help would be greatly appreciated.</p> <p><strong>EDIT</strong></p> <p>When I check the files being retrieved in my web sessions using fiddler, it shows that my browser is retrieving the client access policy file, so I think the error lies somewhere else and WCF is just throwing this error at me? I've also set IE9 to clear its cache everytime its close. Take a look below.</p> <p><img src="https://i.stack.imgur.com/GYKMU.png" alt="enter image description here"></p>
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    1. USMohammad Sepahvand
    1. USMohammad Sepahvand
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    1. COI would check that your clientaccesspolicy is being requested and has not been cached, I've observed that these policy files can be cached aggressively. I would clear your cache and watch your requests (using network monitor in IE9 dev tools, Firebug, Fiddler, etc) to see the clientaccesspolicy being fetched by your browser.
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      1. POTCP error code 10013 Cross Domain Policy Error with netTcpBinding Service and Silverlight Client
      1. USRus
    2. COthanks, will try that now and see what happens.
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      1. POTCP error code 10013 Cross Domain Policy Error with netTcpBinding Service and Silverlight Client
      1. USMohammad Sepahvand
    3. CO@ Rus, I did that but it didn't seem to resolve the issue. I also set my browser to always clean its cache. I updated my answer, be grateful if you could take a look.
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      1. POTCP error code 10013 Cross Domain Policy Error with netTcpBinding Service and Silverlight Client
      1. USMohammad Sepahvand
 

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