osx man page for shutdown

Query: shutdown

OS: osx

Section: 2

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SHUTDOWN(2)						      BSD System Calls Manual						       SHUTDOWN(2)

NAME
shutdown -- shut down part of a full-duplex connection
SYNOPSIS
#include <sys/socket.h> int shutdown(int socket, int how);
DESCRIPTION
The shutdown() call causes all or part of a full-duplex connection on the socket associated with socket to be shut down. If how is SHUT_RD, further receives will be disallowed. If how is SHUT_WR, further sends will be disallowed. If how is SHUT_RDWR, further sends and receives will be disallowed.
RETURN VALUES
The shutdown() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi- cate the error.
ERRORS
The call succeeds unless: [EBADF] Socket is not a valid descriptor. [EINVAL] The how argument is invalid. [ENOTCONN] The specified socket is not connected. [ENOTSOCK] Socket is a file, not a socket.
SEE ALSO
connect(2), socket(2)
HISTORY
The shutdown() function call appeared in 4.2BSD. 4.2 Berkeley Distribution June 4, 1993 4.2 Berkeley Distribution