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[Source] .NET/C# checks if a TCP port is available

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Posted on 1/27/2024 12:03:20 PM | | | |
Requirements: The program needs to listen to a TCP port that can accept connections from different clients.


When you create a TCP/IP server connection on a Windows-based platform, you can specify the port number. It seems unlikely that both applications executing at the same time will try to open the same port number, in fact it happens quite often. It is recommended to determine if a port is already in use before attempting to initiate a server connection that listens to that port.

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