Is there a way to close a Unix socket for reading or writing?

Question

Is there a way to close only the “one end” of a TCP socket to clearly indicate that one side of the connection is made by recording the connection? (Just like you do with a pipe in every Unix pipe tutorial ever.) Or do I need to use some kind of in-band solution, like a sentinel value or something like that?

Answer 1

You can disable the socket for reading or writing using the second parameter for the method:

shutdown(sock, SHUT_RD)
shutdown(sock, SHUT_WR)

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