NAME

       nng_socket_id - return numeric socket identifier

SYNOPSIS

           #include <nng/nng.h>

           int nng_socket_id(nng_socket s);

DESCRIPTION

       The nng_socket_id() function returns a positive identifier for the socket s, if it is valid. Otherwise it
       returns -1.

           Note

           A socket is considered valid if it was ever opened with a protocol constructor, such as the
           nng_req0_open() function. Sockets that are allocated on the stack or statically should be initialized
           with the macro NNG_SOCKET_INITIALIZER to ensure that they cannot be confused with a valid socket
           before they are opened.

RETURN VALUES

       This function returns the positive value for the socket identifier, or -1 if the socket is invalid.

ERRORS

       None.

SEE ALSO

       nng_socket(5), nng(7)

                                                   2025-02-02                                   NNG_SOCKET_ID(3)