pollingduplexhttpbinding

WCF Silverlight client getting 404 not found response for poll message

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问题 Eventually WCF duplex Silverlight 4 client start getting 404 Not Found errors for poll messages, immediately after poll was send from WCF service to Silverlight client, sometimes this happens for second poll sometimes connectivity works hours or even days, but mostly fails on first minutes. ! And what is interesting the issue is like known Silverlight 4 bug when using MaxMessagesPerPoll duplex mode and solution is described here and here but I'm using SingleMessagePerPoll mode. ANyway I tried

Silverlight PollingDuplex InnerChannel faulted with multipleMessagesPerPoll (serverPollTimeout)

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Im running silverlight client version 4.0.50917.0 and SDK version 4.0.50826.1 I've created a simple silverlight client against a wcf pollingduplex binding: Web.config: <system.serviceModel> <extensions> <bindingExtensions> <add name="pollingDuplexHttpBinding" type="System.ServiceModel.Configuration.PollingDuplexHttpBindingCollectionElement,System.ServiceModel.PollingDuplex, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> </bindingExtensions> </extensions> <behaviors> <serviceBehaviors> <behavior name="sv"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug

HTTP-Push (Comet/Reverse Ajax)using Silverlight to Javascript bridge?

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Is it a good idea to use PollingDuplexHttpBinding with Silverlight in conjunction with the function RegisterScriptableObject to achieve Comet-style javascript functionality? ( see tutorial ) I have never seen this approach discussed in the forums, or recommended as a free solution. Instead only heard about paid options such as WebSync and PokeIn . Does Silverlight implement the the Bayeux protocol ? Should it? You'll have some serious scalability problems, and it's a royal pain to implement. See: http://devgripes.wordpress.com/2009/11/14/pollingduplexhttpbinding-absolute-rubbish/ If you want a

HTTP-Push (Comet/Reverse Ajax)using Silverlight to Javascript bridge?

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问题 Is it a good idea to use PollingDuplexHttpBinding with Silverlight in conjunction with the function RegisterScriptableObject to achieve Comet-style javascript functionality? (see tutorial) I have never seen this approach discussed in the forums, or recommended as a free solution. Instead only heard about paid options such as WebSync and PokeIn. Does Silverlight implement the the Bayeux protocol? Should it? 回答1: You'll have some serious scalability problems, and it's a royal pain to implement.