Can Silverlight 3 OPEN SOCKETS?

Question

Can Silverlight 3 OPEN SOCKETS?

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If yes. What do I need

• MSDN if there is any help on this.
• Open Source Libs/wrappers for encoding/decoding.
• Tutorials and blog articles on How to do it.

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  If no I need where did you get the info from (link to MSDN or other official SL resource)

Answer 1

Yes, it can.

1. MSDN:
   http://msdn.microsoft.com/en-us/library/cc296248(VS.95).aspx
   http://msdn.microsoft.com/en-us/library/cc645032(VS.95).aspx

2. One of the light libs you might find useful:
   http://socketslight.codeplex.com

3. A couple of how-to-s:
   http://weblogs.asp.net/dwahlin/archive/2008/04/13/pushing-data-to-a-silverlight-client-with-sockets-part-ii.aspx
   http://www.silverlightshow.net/items/SocketsLight-Silverlight-Sockets-Framework.aspx

Answer 2

Yes, you can, but only within a certain range of ports (4502-4534) and only if you can also host an appropriate cross-domain policy file on port 943 on the same server. You've already got the MSDN link - here's an example application (for SL2, but should be similar in 3):

[Pushing Data to a Silverlight Client with Sockets Part 1][1]

Search Dan's blog for "socket" and you can find part 2 and how to create the policy server - SO won't let me post more than 1 link :(

Answer 3

Here's the MSDN article on working with sockets:

Working with Sockets