SHUTDOWN

shutdown ? shut down part of a full-duplex connection

#include <sys/socket.h>

int shutdown(int s, int how);

The shutdown call causes all or part of a full-duplex connection on the socket associated with s to be shut down. If how is 0, further receives will be disallowed. If how is 1, further sends will be disallowed. If how is 2, further sends and receives will be disallowed.

On success, zero is returned. On error, ?1 is returned, and errno is set appropriately.

s is not a valid descriptor.

ENOTSOCK

s is a file, not a socket.

ENOTCONN

The specified socket is not connected.

4.4BSD (the shutdown function call first appeared in 4.2BSD).

The numerical how flags should be replaced by the Single Unix-mandated SHUT_RD, SHUT_WR, and SHUT_RDWR flags.

connect(2), socket(2)