NAME

       nng_sockaddr - socket address

SYNOPSIS

           #include <nng/nng.h>

           typedef union nng_sockaddr {
               uint16_t              s_family;
               nng_sockaddr_ipc      s_ipc;
               nng_sockaddr_inproc   s_inproc;
               nng_sockaddr_in       s_in;
               nng_sockaddr_in6      s_in6;
               nng_sockaddr_zt       s_zt;
               nng_sockaddr_abstract s_abstract;
           } nng_sockaddr;

           enum sockaddr_family {
               NNG_AF_UNSPEC   = 0,
               NNG_AF_INPROC   = 1,
               NNG_AF_IPC      = 2,
               NNG_AF_INET     = 3,
               NNG_AF_INET6    = 4,
               NNG_AF_ZT       = 5,
               NNG_AF_ABSTRACT = 6
           };

DESCRIPTION

       An nng_sockaddr is a structure used for representing the addresses used by underlying transports, such as
       TCP/IP addresses, IPC paths, and so forth.

           The name sockaddr is based on its similarity with POSIX struct sockaddr, but in NNG, these addresses
           are more closely affiliated with instances of nng_pipe than of nng_socket. The naming confusion is
           unfortunate.

       This structure is actually a union, with different members for different types of addresses.

       Every member structure has as its first element a uint16_t field containing the address family. This
       overlaps the s_family member of the union, and indicates which specific member should be used.

       The values of s_family are as follows:

       NNG_AF_UNSPEC
           Invalid address, no other valid fields.

       NNG_AF_INPROC
           Address for intraprocess communication (nng_inproc(7)). The s_inproc member is valid.

       NNG_AF_IPC
           Address for interprocess communication (nng_ipc(7)). The s_path member is valid.

       NNG_AF_INET
           Address for TCP/IP (v4) communication. The s_in member is valid.

       NNG_AF_INET6
           Address for TCP/IP (v6) communication. The s_in6 member is valid.

       NNG_AF_ZT
           Address for ZeroTier transport (nng_zerotier(7)). The s_zt member is valid.

       NNG_AF_ABSTRACT
           Address for an abstract UNIX domain socket. The s_abstract member is valid.

       Please see the manual pages for each individual type for more information.

SEE ALSO

       nng_sockaddr_abstract(5), nng_sockaddr_in(5), nng_sockaddr_in6(5), nng_sockaddr_inproc(5),
       nng_sockaddr_ipc(5), nng_sockaddr_zt(5), nng(7)

                                                   2025-02-02                                    NNG_SOCKADDR(5)