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Linux 2.6 - man page for shutdown (linux section 3posix)

SHUTDOWN(P)			    POSIX Programmer's Manual			      SHUTDOWN(P)

NAME
       shutdown - shut down socket send and receive operations

SYNOPSIS
       #include <sys/socket.h>

       int shutdown(int socket, int how);

DESCRIPTION
       The  shutdown() function shall cause all or part of a full-duplex connection on the socket
       associated with the file descriptor socket to be shut down.

       The shutdown() function takes the following arguments:

       socket Specifies the file descriptor of the socket.

       how    Specifies the type of shutdown. The values are as follows:

       SHUT_RD
	      Disables further receive operations.

       SHUT_WR
	      Disables further send operations.

       SHUT_RDWR
	      Disables further send and receive operations.

       The shutdown() function disables subsequent send and/or receive operations  on  a  socket,
       depending on the value of the how argument.

RETURN VALUE
       Upon successful completion, shutdown() shall return 0; otherwise, -1 shall be returned and
       errno set to indicate the error.

ERRORS
       The shutdown() function shall fail if:

       EBADF  The socket argument is not a valid file descriptor.

       EINVAL The how argument is invalid.

       ENOTCONN
	      The socket is not connected.

       ENOTSOCK
	      The socket argument does not refer to a socket.

       The shutdown() function may fail if:

       ENOBUFS
	      Insufficient resources were available in the system to perform the operation.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       getsockopt() , read() , recv() , recvfrom() , recvmsg() , select() , send() ,  sendto()	,
       setsockopt()  ,	socket() , write() , the Base Definitions volume of IEEE Std 1003.1-2001,
       <sys/socket.h>

COPYRIGHT
       Portions of this text are reprinted and	reproduced  in	electronic  form  from	IEEE  Std
       1003.1,	2003  Edition,	Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				      SHUTDOWN(P)


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