nng_sub_open - create sub socket

       The nng_sub0_open() function creates a sub version 0 socket and returns it at the location pointed to by
       s.

       The nng_sub0_open_raw() function creates a sub version 0 socket in raw mode and returns it at the
       location pointed to by s.

       NNG_ENOMEM
           Insufficient memory is available.

       NNG_ENOTSUP
           The protocol is not supported.

       nng_sub_open - create sub socket

       These functions return 0 on success, and non-zero otherwise.

nng_socket(5), nng_pub(7), nng_sub(7), nng(7)

                                                   2025-04-20                                    NNG_SUB_OPEN(3)

           #include <nng/nng.h>
           #include <nng/protocol/pubsub0/sub.h>

           int nng_sub0_open(nng_socket *s);

           int nng_sub0_open_raw(nng_socket *s);