问如何使用libminiupnpc设置端口转发

EN

int error = 0;
struct UPNPDev *upnp_dev = upnpDiscover(
        2000    , // time to wait (milliseconds)
        nullptr , // multicast interface (or null defaults to 239.255.255.250)
        nullptr , // path to minissdpd socket (or null defaults to /var/run/minissdpd.sock)
        0       , // source port to use (or zero defaults to port 1900)
        0       , // 0==IPv4, 1==IPv6
        &error  ); // error condition

char lan_address[64];
struct UPNPUrls upnp_urls;
struct IGDdatas upnp_data;
int status = UPNP_GetValidIGD(upnp_dev, &upnp_urls, &upnp_data, lan_address, sizeof(lan_address));
// look up possible "status" values, the number "1" indicates a valid IGD was found

// get the external (WAN) IP address
char wan_address[64];
UPNP_GetExternalIPAddress(upnp_urls.controlURL, upnp_data.first.servicetype, wan_address);

// add a new TCP port mapping from WAN port 12345 to local host port 24680
error = UPNP_AddPortMapping(
            upnp_urls.controlURL,
            upnp_data.first.servicetype,
            "12345"     ,  // external (WAN) port requested
            "24680"     ,  // internal (LAN) port to which packets will be redirected
            lan_address , // internal (LAN) address to which packets will be redirected
            "FooBar server for XYZ", // text description to indicate why or who is responsible for the port mapping
            "TCP"       , // protocol must be either TCP or UDP
            nullptr     , // remote (peer) host address or nullptr for no restriction
            "86400"     ); // port map lease duration (in seconds) or zero for "as long as possible"

// list all port mappings
size_t index = 0;
while (true)
{
    char map_wan_port           [200] = "";
    char map_lan_address        [200] = "";
    char map_lan_port           [200] = "";
    char map_protocol           [200] = "";
    char map_description        [200] = "";
    char map_mapping_enabled    [200] = "";
    char map_remote_host        [200] = "";
    char map_lease_duration     [200] = ""; // original time, not remaining time :(

    error = UPNP_GetGenericPortMappingEntry(
                upnp_urls.controlURL            ,
                upnp_data.first.servicetype     ,
                std::to_string(index).c_str()   ,
                map_wan_port                    ,
                map_lan_address                 ,
                map_lan_port                    ,
                map_protocol                    ,
                map_description                 ,
                map_mapping_enabled             ,
                map_remote_host                 ,
                map_lease_duration              );

    if (error)
    {
        break; // no more port mappings available
    }

    std::cout << ....print out or do whatever you want with the map_* fields
}