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Found 6 results for Duplex.
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  • Pub/sub Sample Using HTTP Polling Duplex WCF Channel in Microsoft Silverlight 3

    0 comments  /  posted by  Silverlight Show  on  Jul 27, 2009 (8 months ago)
    Check out this great blog post written by Tomasz Janczuk on how to accomplish a pub/solution using WCF and Silverlight. Full source and VS solution are available.

    This sample demonstrates how a Micrososoft Silverlight 3 application can consume asynchronous data notifications from the server using the polling duplex protocol of Windows Communication Foundation (WCF). I am also discussing selected aspects of the implementation, in particular related to performance.

  • Silverlight 3 Polling Duplex Chat and Realtime Stock Updates

    0 comments  /  posted by  Silverlight Show  on  Jul 01, 2009 (9 months ago)
    In this article Peter Bromberg shows how Duplex polling can use the "push" model to send subscribed realtime stock price updates to connected clients.

    I was asked to prototype something with the Duplex Polling feature of Silverlight 3 for some new Silverlight applications we're working on for So, like any good developer, the first thing I did was set out not to have to reinvent the wheel. I found several good examples of duplex on the web, but the one that best suited my needs was the "Duplex End to End Sample". This is a well-written simple chat service that also sends out a fake random stock price update using the "Push to all clients" model.

  • Silverlight Tip: Problems with polling duplex inactivitytimeout

    0 comments  /  posted by  Silverlight Show  on  Apr 20, 2009 (more than a year ago)
    Tags: Duplex , WCF
    Alexey Zakharov has posted a little Silverlight tip in which he is trying to solve a problem that occurs with polling duplex inactivitytimeout.

    Many people ask question why polling duplex session shutdown after 10 minutes in spite of polling duplex InactivityTimeout value is more than hour.

    In private email Christopher Scrosati (Silverlight WS Team) told me that I've also should configure ReciveTimout.

  • How to Increase Amount of Silverlight Duplex Clients

    0 comments  /  posted by  Silverlight Show  on  Apr 16, 2009 (more than a year ago)
    Tags: Silverlight , Duplex , WCF , C#

    Alexey Zakharov has a short post in which he shows you one way to increase amount of Silverlight duplex clients.

    Amount of silverlight polling duplex clients is defined by MaxConcurrentSessions throttling property. Default value is 10. To increase it you should programmatically add ServiceThrottlingBehavior.

  • A client for duplex services in Silverlight

    0 comments  /  posted by  Silverlight Show  on  Mar 11, 2009 (more than a year ago)
    Tags: WCF , Duplex

    Nigel Sampson is explaining about the use of duplex services in Silverlight.

    I'm currently working on a project that requires the use of duplex services to report progress on a long running event (I'll go more into the actual event in a later post). The reference material I started with was "How to: Build a Duplex Service" and "How to: Access a Duplex Service with the Channel Model", building the service itself its a relatively simple affair with a slight learning experience as I hadn't really used the Message class from WCF before.

  • 5 comments  /  posted by  Thomas Holloway  on  Jul 06, 2008 (more than a year ago)

    Note: This article is submitted by Thomas Holloway for Silverlight Contest: Write and Win.Thanks a lot, Thomas! Hello All, Please drop a comment if you like it.

    Alright, so now that we know what a simple messenger looks like with WCF callbacks, what does it take to put one together in Silverlight? For starters, Silverlight does not have the same capabilities as the full WCF framework. WCF callbacks in Silverlight must be done through HTTP Polling and therefore we don’t really have a truly bi-directional environment. Instead, we must manually setup the message asynchronous message architecture with a few special classes in a new System.ServiceModel.PollingDuplex library.

    Download the Solution