NAME

       nng_ctx_id - return numeric context identifier

SYNOPSIS

           #include <nng/nng.h>

           int nng_ctx_id(nng_ctx c);

DESCRIPTION

       The nng_ctx_id() function returns a positive identifier for the context c, if it is valid.
       Otherwise it returns -1.

           Note
           A context is considered valid if it was ever opened with nng_ctx_open() function.
           Contexts that are allocated on the stack or statically should be initialized with the
           macro NNG_CTX_INITIALIZER to ensure that they cannot be confused with a valid context
           before they are opened.

RETURN VALUES

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

ERRORS

       None.

SEE ALSO

       nng_ctx(5), nng(7)

                                            2024-10-11                              NNG_CTX_ID(3)