NAME
shutdown —
shut down part of a full-duplex
connection
SYNOPSIS
#include
<sys/socket.h>
int
shutdown(int socket,
int how);
DESCRIPTION
The
shutdown()
call causes all or part of a full-duplex connection on the socket associated
with socket to be shut down. If
how is SHUT_RD, further
receives will be disallowed. If how is
SHUT_WR, further sends will be disallowed. If
how is SHUT_RDWR, further
sends and receives will be disallowed.
RETURN VALUES
The shutdown() function returns the
value 0 if successful; otherwise the value -1 is returned and
the global variable errno is set to indicate the
error.
ERRORS
The call succeeds unless:
- [
EBADF] - Socket is not a valid descriptor.
- [
EINVAL] - The how argument is invalid.
- [
ENOTCONN] - The specified socket is not connected.
- [
ENOTSOCK] - Socket is a file, not a socket.
SEE ALSO
HISTORY
The shutdown() function call appeared in
4.2BSD.