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Async sockets in .NET

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Well, these are definitely unique. I have a few questions, I am used to Unix-style select() and WSAAsyncSelect methods of socket I/O. 1. I don''t understand the significance of the state object. Is this so you can differentiate between multiple items in the callbacks? 2. It seems like its overlapped I/O more than anything else. If I''m used to simply waiting for a FD_READ message and acting on it, do I have to call Socket.BeginReceive at the end of my Receive callback to get the same effect? 3. What socket model does the framework use on Win98 if 98 doesn''t support I/O completion ports? 4. Aren''t I/O completion ports a bit heavyweight for some applications? Thanks.

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