NAME

shutdown - shut down part of a full-duplex connection

SYNOPSIS

#include <sys/socket.h>

int shutdown( int s , int how );

DESCRIPTION

The shutdown() call shuts down all or part of a full-duplex connection on the socket associated with s. If how is 0, then further receives will be disallowed. If how is 1, then further sends will be disallowed. If how is 2, then further sends and receives will be disallowed.

RETURN VALUES

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

ERRORS

This function is a member of Unison's IOLIB family of functions. IOLIB is implemented as a message passing and generalized interface layer. Each Unison I/O server is responsible for its own error reporting.

For an exact list of error codes returned by a particular server, refer to that server's documentation in the Unison Programmer's Guide for each specific platform.

Servers may implement these errors codes in response to this function.

The call succeeds unless:

EBADF

s is not a valid file descriptor.

ENOMEM

There was insufficient user memory available for the operation to complete.

ENOTCONN

The specified socket is not connected.

ENOTSOCK

s is not a socket.

SEE ALSO

connect(), socket(), send(), select(), recv(), read(), write(), getsockopt()

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