shutdown2
Shut down part of a full-duplex connection
Usage
#include <sys/socket.h>
int
shutdown(int socket, int how);
Overview
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.
Releases
155 releases since Mac OS X 10.0; the text changed 3 times.