SYNOPSIS

#include <nng/nng.h>

int nng_close(nng_socket s);

DESCRIPTION

The nng_close() function closes the supplied socket, s. Messages that have been submitted for sending may be flushed or delivered, depending upon the transport and the setting of the NNG_OPT_LINGER option.

Further attempts to use the socket after this call returns will result in NNG_ECLOSED. Threads waiting for operations on the socket when this call is executed may also return with an NNG_ECLOSED result.

RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

ERRORS

NNG_ECLOSED

The socket s is already closed or was never opened.

SEE ALSO