NNG_SOCKADDR_IN(5)

NAME
nng_sockaddr_in - IPv4 socket address

SYNOPSIS

    #include <nng/nng.h>
    enum sockaddr_family {
        NNG_AF_INET = 3,
    };
    typedef struct {
        uint16_t sa_family;
        uint16_t sa_port;
        uint32_t sa_addr;
    } nng_sockaddr_in;

DESCRIPTION

An nng_sockaddr_in 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 IPv4 addresses. A different structure, nng_sockaddr_in6, is used for IPv6 addresses.

The following structure members are present:

sa_family
    This field will always have the value NNG_AF_INET.

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.

    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_in).

    Important

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

SEE ALSO

nng_sockaddr(5), nng_sockaddr_in6(5), nng_tcp(7), nng(7)