NAME

       nng_sockaddr_in6 - IPv6 socket address

SYNOPSIS

           #include <nng/nng.h>

           enum sockaddr_family {
               NNG_AF_INET6 = 4,
           };

           typedef struct {
               uint16_t sa_family;
               uint16_t sa_port;
               uint8_t  sa_addr[16];
               uint32_t sa_scope;
           } nng_sockaddr_in6;

DESCRIPTION

       An nng_sockaddr_in6 is the flavor of nng_sockaddr used to represent TCP (and sometimes UDP) addresses,
       including the Internet Protocol (IP) address and port number.

       This structure is used with IPv6 addresses. A different structure, nng_sockaddr_in, is used for IPv4
       addresses.

       The following structure members are present:

       sa_family
           This field will always have the value NNG_AF_INET6.

       sa_port
           This field holds the TCP or UDP port number, in network byte-order. A zero value here is used when no
           specific port number is indicated.

       sa_addr
           This field holds the IP address in network-byte order.

       sa_scope
           This is the scope, and is typically used with link local addresses to identify a specific interface.
           The details of this are specific to the operating system. This value is presented identically to the
           underlying system’s, including any byte order considerations.

           Tip

           The sa_port and sa_addr fields are in network-byte order to facilitate their use with system APIs
           such as inet_ntop(). Most platforms use some form of BSD-derived network API, which uses network-byte
           order in the various structures (such as sockaddr_in6).

           Important

           This field appears similar to BSD sockaddr_in6, but it is not the same, and they may not be used
           interchangeably.

SEE ALSO

       nng_sockaddr(5), nng_sockaddr_in(5), nng_tcp(7), nng(7)

                                                   2025-04-20                                NNG_SOCKADDR_IN6(5)