shutdown

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The shutdown function disables sends or receives on a socket.

The shutdown function causes all or part of a full-duplex connection on the socket associated with the descriptor socket to be shut down. The shutdown function disables subsequent send and/or receive operations on a socket, depending on the value of the how argument.

Syntax

int shutdown(

int socket,

int how

);

Parameters

socket

The descriptor that identifies a connected socket.

how

A flag that describes what types of operation will no longer be allowed. The following table lists the values supported:

Type	Meaning
SHUT_RD	Disables further receive operations.
SHUT_WR	Disables further send operations.
SHUT_RDWR	Disables further send and receive operations.

Return value

Upon successful completion, shutdown returns 0; otherwise, -1 is returned and errno set to indicate the error.