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I want to communicate between two applications or winforms in C# using clients and server its like i want a server continiously listening to incoming messages from a client or clients and when the msg is received i want to reply back to the client that sent the information for processing can any one help with code example

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Sounds like a good case for WCF using netTcpBinding in an intranet environment! :-)

Check out these intros to WCF:

There's an especially good series of screencasts with Aaron Skonnard (also available from the WCF Getting Started section) which explains step by step and in easy portions how to get up and running with your first adventures in WCF! :-)

Also, WCF does offer specific support for peer-to-peer networking, e.g. discovery and establishing communications between sibling nodes - see some articles on that topic here:

Compared to a "hand-crafted" solution based on sockets, WCF gives you a lot of ready-made plumbing code which you don't have to worry about - security, reliability, message encryption, transaction support, and much more. Why do that all yourself, if you can just use it ready-made?


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C# TCP-IP client server example:


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