SHUTDOWN(P) POSIX Programmer's Manual SHUTDOWN(P)
shutdown - shut down socket send and receive operations
int shutdown(int socket, int how);
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:
Disables further receive operations.
Disables further send operations.
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.
Upon successful completion, shutdown() shall return 0; otherwise, -1 shall be returned and
errno set to indicate the error.
The shutdown() function shall fail if:
EBADF The socket argument is not a valid file descriptor.
EINVAL The how argument is invalid.
The socket is not connected.
The socket argument does not refer to a socket.
The shutdown() function may fail if:
Insufficient resources were available in the system to perform the operation.
The following sections are informative.
getsockopt() , read() , recv() , recvfrom() , recvmsg() , select() , send() , sendto() ,
setsockopt() , socket() , write() , the Base Definitions volume of IEEE Std 1003.1-2001,
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)