Port Mapping using Cling library in Android

Adding Cling Support to your Android Project

build.gradle

repositories {
  maven { url 'http://4thline.org/m2' }
}

dependencies {

// Cling
compile 'org.fourthline.cling:cling-support:2.1.0'

//Other dependencies required by Cling
compile 'org.eclipse.jetty:jetty-server:8.1.18.v20150929'
compile 'org.eclipse.jetty:jetty-servlet:8.1.18.v20150929'
compile 'org.eclipse.jetty:jetty-client:8.1.18.v20150929'
compile 'org.slf4j:slf4j-jdk14:1.7.14'

}

Mapping a NAT port

String myIp = getIpAddress();
int port = 55555;

//creates a port mapping configuration with the external/internal port, an internal host IP, the protocol and an optional description
PortMapping[] desiredMapping = new PortMapping[2];
desiredMapping[0] = new PortMapping(port,myIp, PortMapping.Protocol.TCP);
desiredMapping[1] = new PortMapping(port,myIp, PortMapping.Protocol.UDP);

//starting the UPnP service
UpnpService upnpService = new UpnpServiceImpl(new AndroidUpnpServiceConfiguration());
RegistryListener registryListener = new PortMappingListener(desiredMapping);
upnpService.getRegistry().addListener(registryListener);
upnpService.getControlPoint().search();



//method for getting local ip
private String getIpAddress() {
    String ip = "";
    try {
        Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
                .getNetworkInterfaces();
        while (enumNetworkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = enumNetworkInterfaces
                    .nextElement();
            Enumeration<InetAddress> enumInetAddress = networkInterface
                    .getInetAddresses();
            while (enumInetAddress.hasMoreElements()) {
                InetAddress inetAddress = enumInetAddress.nextElement();

                if (inetAddress.isSiteLocalAddress()) {
                    ip +=inetAddress.getHostAddress();
                }
            }
        }
    } catch (SocketException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        ip += "Something Wrong! " + e.toString() + "\n";
    }
    return ip;
   }