UPnP Blog - send discovery packet

gistfile1.groovy

InetSocketAddress socketAddress 
    = new InetSocketAddress(InetAddress.getByName("239.255.255.250"), 1900)
MulticastSocket socket = new MulticastSocket(null)
try {
    socket.bind(new InetSocketAddress("192.168.1.150", 1901))
    StringBuilder packet = new StringBuilder()
    packet.append( "M-SEARCH * HTTP/1.1\r\n" )
    packet.append( "HOST: 239.255.255.250:1900\r\n" )
    packet.append( "MAN: \"ssdp:discover\"\r\n" )
    packet.append( "MX: ").append( "5" ).append( "\r\n" )
    packet.append( "ST: " ).append( "ssdp:all" ).append( "\r\n" ).append( "\r\n" )
    //packet.append( "ST: " ).append( "urn:Belkin:device:controllee:1" ).append( "\r\n" ).append( "\r\n" )
    byte[] data = packet.toString().bytes
    socket.send(new DatagramPacket(data, data.length, socketAddress))
} catch (IOException e) {
    throw e
} finally {
    socket.disconnect()
    socket.close()
}