SHUTDOWN(2)SHUTDOWN(2)NAMEshutdown - shuts down a socket for reading, writing, or both
SYNOPSIS
#include <sys/socket.h>
int shutdown(int sd, int how);
DESCRIPTIONshutdown() shuts down the socket sd for reading, writing, or both read‐
ing and writing by setting how to SHUT_RD, SHUT_WR, or SHUT_RDWR.
RETURN VALUES
On success, this function returns 0. On error, -1 is returned and errno
is set.
ERRORS
[EINVAL] how must be SHUT_RD, SHUT_WR, or SHUT_RDWR.
[ENOTCONN] sd must be a connected socket.
[ENOSYS] attempted to shutdown the read side of a TCP socket, or
the type of socket is not supported.
SEE ALSOsocket(2), socketpair(2)SHUTDOWN(2)