shutdown(2) System Calls Manual shutdown(2) Name shutdown - shut down full-duplex connection Syntax shutdown(s, how) int s, how; Description The call causes all or part of a full-duplex connection on the socket associated with s to be shut down. If how is 0, further receives are disallowed. If how is 1, further sends are disallowed. If how is 2, further sends and receives are disallowed. Return Values A zero (0) is returned if the call succeeds, -1 if it fails. Diagnostics The call succeeds unless: [EBADF] The s argument is not a valid descriptor. [ENOTSOCK] The s argument is a file, not a socket. [ENOTCONN] The specified socket is not connected. See Also connect(2), socket(2) shutdown(2)