shutdown(3) [linux man page]

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 Defi-
       nitions 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 Technol-
       ogy -- 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 original Standard can  be  obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							       SHUTDOWN(P)

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

NAME

       getsockname - get the socket name

SYNOPSIS

       #include <sys/socket.h>

       int getsockname(int socket, struct sockaddr *restrict address,
	      socklen_t *restrict address_len);

DESCRIPTION

       The  getsockname()  function  shall  retrieve  the locally-bound name of the specified socket, store this address in the sockaddr structure
       pointed to by the address argument, and store the length of this address in the object pointed to by the address_len argument.

       If the actual length of the address is greater than the length of the supplied sockaddr structure, the stored address shall be truncated.

       If the socket has not been bound to a local name, the value stored in the object pointed to by address is unspecified.

RETURN VALUE

       Upon successful completion, 0 shall be returned, the address argument shall point to the address of the socket, and the	address_len  argu-
       ment shall point to the length of the address.  Otherwise, -1 shall be returned and errno set to indicate the error.

ERRORS

       The getsockname() function shall fail if:

       EBADF  The socket argument is not a valid file descriptor.

       ENOTSOCK
	      The socket argument does not refer to a socket.

       EOPNOTSUPP
	      The operation is not supported for this socket's protocol.

       The getsockname() function may fail if:

       EINVAL The socket has been shut down.

       ENOBUFS
	      Insufficient resources were available in the system to complete the function.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       accept() , bind() , getpeername() , socket() , 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 Technol-
       ogy -- 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 original Standard can  be  obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							    GETSOCKNAME(P)