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NetBSD 6.1.5 - man page for shutdown (netbsd section 2)

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

NAME
     shutdown -- shut down part of a full-duplex connection

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/socket.h>

     int
     shutdown(int s, int how);

DESCRIPTION
     The shutdown() call causes all or part of a full-duplex connection on the socket associated
     with s to be shut down.  The how argument specifies which part of the connection will be
     shut down.  Permissible values are:

	   SHUT_RD	further receives will be disallowed.

	   SHUT_WR	further sends will be disallowed.

	   SHUT_RDWR	further sends and receives will be disallowed.

RETURN VALUES
     A 0 is returned if the call succeeds, -1 if it fails.

ERRORS
     The call succeeds unless:

     [EBADF]		s is not a valid descriptor.

     [EINVAL]		The how argument is invalid.

     [ENOTCONN] 	The specified socket is not connected.

     [ENOTSOCK] 	s is a file, not a socket.

SEE ALSO
     connect(2), socket(2)

HISTORY
     The shutdown() function call appeared in 4.2BSD.  The how arguments used to be simply 0, 1,
     and 2, but now have named values as specified by X/Open Portability Guide Issue 4
     (``XPG4'').

BSD					 August 18, 2002				      BSD
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