Does the socket port need to be closed under Linux?

The socket port under Linux needs to be closed. In order to ensure the timely release of system resources and avoid problems, when your program no longer needs a specific socket port, you can call the "close()" function To close, closing the socket port will release related system resources and ensure that the port can be reused by other applications.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

Under Linux, when using socket programming, open socket ports should be explicitly closed where appropriate. This is to ensure that system resources are released in a timely manner and to avoid problems.

When your program no longer needs a specific socket port, you can close it by calling the close() function. Closing a socket port frees associated system resources and ensures that the port can be reused by other applications.

The following are some situations when you should consider closing a socket port:

• The program exits normally: When your program has completed all required network communication tasks, it should Close all open socket ports before the program exits.

• Connection processing completed: If your program is a server responsible for processing connection requests from clients, then after the communication with a specific client ends, the server corresponding to the client should be closed. Socket port.

• Resource limitations: The operating system has limits on the number of sockets and ports that can be opened by each process. These limits may be reached if your program needs to handle a large number of connections simultaneously or listen on multiple ports. In this case, promptly closing socket ports that are no longer needed can avoid resource exhaustion.

In short, in order to release system resources and avoid potential problems, it is recommended to close the socket port under Linux at the appropriate time.

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