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Async Sockets Messages   Related Types This message was discovered on microsoft.public.dotnet.general. Responses highlighted in red are from those people who are likely to be able to contribute good, authoratitive information to this discussion. They include Microsoft employees, MVP's and others who IMHO contribute well to these kinds of discussions. Post a new message to this list... Ben (VIP) I've written a fair amount of sockets code using the Winsock2 API, but I am having some trouble converting to the .Net Sockets API, specifically asynchronous sockets. What I have is a form that is both a client and a server. When the form starts I create a listening socket and call Socket.BeginAccept(). When a client connects my accept function is called, and it is on a separate thread. After I accept the client connection I connect to another server (no async there). Now both sockets call Socket.BeginReceive() and wait for data. When data from one arrives, I log it, then pass it to the other. This seems to work well, however things break down when the client disconnects. First when a client disconnects I have no way to know about it (in winsock I could get the FD_CLOSE event). So currently I can do nothing in my form, so I added a "Reset" button which seems to cause real unpleasantness. After a client has disconnected and I click "Reset" in the form, how do I stop all the async receives? Currently I am calling EndReceive with the IAsyncResult I got from the BeginReceive. But when a new client attempts to connect I get a "Fatal Execution Engine Exception" from code that should be fine. Plus I seem to accumulate more threads than I can explain. Can anyone recommend a good C# async server example? Or MSDN article? Thanks! Ben Reply to this message...        Supra www.vbip.com Ben wrote: [Original message clipped] Reply to this message...     System.IAsyncResult System.Net.Sockets.Socket Ad MBR BootFX Best-of-breed application framework for .NET projects, developed by Matthew Baxter-Reynolds and MBR IT

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