plucky (3) nng_listener_id.3.gz
NAME
nng_listener_id - return numeric listener identifier
SYNOPSIS
#include <nng/nng.h> int nng_listener_id(nng_listener l);
DESCRIPTION
The nng_listener_id() function returns a positive identifier for the listener l, if it is valid. Otherwise it returns -1. Note A listener is considered valid if it was ever created with the nng_listener_create() or nng_listen() functions. listeners that are allocated on the stack or statically should be initialized with the macro NNG_LISTENER_INITIALIZER to ensure that they cannot be confused with a valid listener before they are created properly.
RETURN VALUES
This function returns the positive value for the listener identifier, or -1 if the listener is invalid.
ERRORS
None.
SEE ALSO
nng_listener(5), nng(7) 2024-12-27 NNG_LISTENER_ID(3)