Function guess_address

connectd/netaddress.c:226–267

}

bool guess_address(struct wireaddr *addr)
{
    bool ret;

    /* We point to Google nameservers, works unless you're inside Google :) */
    switch (addr->type) {
    case ADDR_TYPE_IPV4: {
        struct sockaddr_in sin;
        memset(&sin, 0, sizeof(sin));
        sin.sin_port = htons(53);
        /* 8.8.8.8 */
        sin.sin_addr.s_addr = 0x08080808;
        sin.sin_family = AF_INET;
        ret = get_local_sockname(AF_INET, &sin, sizeof(sin));
        addr->addrlen = sizeof(sin.sin_addr);
        memcpy(addr->addr, &sin.sin_addr, addr->addrlen);
        return ret;
    }
    case ADDR_TYPE_IPV6: {
        struct sockaddr_in6 sin6;
        memset(&sin6, 0, sizeof(sin6));
        /* 2001:4860:4860::8888 */
        static const unsigned char pchGoogle[16]
            = {0x20,0x01,0x48,0x60,0x48,0x60,0,0,0,0,0,0,8,8,8,8};
        memset(&sin6, 0, sizeof(sin6));
        sin6.sin6_port = htons(53);
        sin6.sin6_family = AF_INET6;
        memcpy(sin6.sin6_addr.s6_addr, pchGoogle, sizeof(pchGoogle));
        ret = get_local_sockname(AF_INET6, &sin6, sizeof(sin6));
        addr->addrlen = sizeof(sin6.sin6_addr);
        memcpy(addr->addr, &sin6.sin6_addr, addr->addrlen);
        return ret;
    }
    case ADDR_TYPE_TOR_V2_REMOVED:
    case ADDR_TYPE_TOR_V3:
    case ADDR_TYPE_DNS:
    case ADDR_TYPE_WEBSOCKET:
        status_broken("Cannot guess address type %u", addr->type);
        break;
    }
    abort();
}

bool address_routable(const struct wireaddr *wireaddr, bool allow_localhost)
{