NAME

       nng_dialer_setopt - set dialer option

SYNOPSIS

           #include <nng/nng.h>

           int nng_dialer_setopt(nng_dialer d, const char *opt, const void *val,
               size_t valsz);

           int nng_dialer_setopt_bool(nng_dialer d, const char *opt, bool bval);

           int nng_dialer_setopt_int(nng_dialer d, const char *opt, int ival);

           int nng_dialer_setopt_ms(nng_dialer d, const char *opt, nng_duration dur);

           int nng_dialer_setopt_ptr(nng_dialer d, const char *opt, void *ptr);

           int nng_dialer_setopt_size(nng_dialer d, const char *opt, size_t z);

           int nng_dialer_setopt_string(nng_dialer d, const char *opt, const char *str);

           int nng_dialer_setopt_uint64(nng_dialer d, const char *opt, uint64_t u64);

DESCRIPTION

           Important

           These functions are deprecated. Please see nng_dialer_set. They may not be present if the library was
           built with NNG_ELIDE_DEPRECATED.

       The nng_dialer_setopt() functions are used to configure options for the dialer d. The actual options that
       may be configured in this way vary, and many are documented in nng_options(5).

       Additionally some transport-specific options are documented with the transports themselves.

           Note

           Once a dialer has started, it is generally not possible to change its configuration.

   Forms
       In all of these forms, the option opt is configured on the dialer d.

       The details of the type, size, and semantics of the option will depend on the actual option, and will be
       documented with the option itself.

       nng_dialer_setopt()
           This function is untyped, and can be used to configure any arbitrary data. The val pointer addresses
           the data to copy, and valsz is the size of the objected located at val.

           Tip

           It may be easier to use one of the typed forms of this function.

       nng_dialer_setopt_bool()
           This function is for options which take a Boolean (bool). The bval is passed to the option.

       nng_dialer_setopt_int()
           This function is for options which take an integer (int). The ival is passed to the option.

       nng_dialer_setopt_ms()
           This function is used to configure time durations (such as timeouts) using type nng_duration. The
           duration dur is an integer number of milliseconds.

       nng_dialer_setopt_ptr()
           This function is used to pass a pointer, ptr, to structured data. The data referenced by ptr is
           generally managed by other functions. For example, TLS configuration objects created with
           (nng_tls_config_alloc()) can be passed this way.

           Note

           This form is somewhat special in that the object is generally not copied, but instead the pointer to
           the object is copied.

       nng_dialer_setopt_size()
           This function is used to configure a size, z, typically for buffer sizes, message maximum sizes, and
           similar options.

       nng_dialer_setopt_string()
           This function is used to pass configure a string, str. Strings passed this way must be legal UTF-8 or
           ASCII strings, terminated with a NUL (\0) byte. (Other constraints may apply as well, see the
           documentation for each option for details.)

       nng_dialer_setopt_uint64()
           This function is used to configure a 64-bit unsigned value, u64. This is typically used for options
           related to identifiers, network numbers, and such.

RETURN VALUES

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

ERRORS

       NNG_EBADTYPE
           Incorrect type for option.

       NNG_ECLOSED
           Parameter d does not refer to an open dialer.

       NNG_EINVAL
           The value being passed is invalid.

       NNG_ENOTSUP
           The option opt is not supported.

       NNG_EREADONLY
           The option opt is read-only.

       NNG_ESTATE
           The dialer d is already started.

SEE ALSO

       nng_dialer_create(3) nng_dialer_getopt(3) nng_strerror(3), nng_dialer(5), nng_duration(5),
       nng_options(5), nng(7)

                                                   2025-02-02                               NNG_DIALER_SETOPT(3)