<?xml version="1.0" encoding="utf-8"?>
<s:Envelope s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<u:ForceTermination xmlns:u="urn:schemas-upnp-org:service:WANIPConnection:1" />
</s:Body>
</s:Envelope>

import java.net.*;
import java.io.*;
 
public class PostSOAP {
 
  public static void main(String[] args) {
 
    sendSOAP();
    System.exit(0);
 
  }
 
  public static void sendSOAP(){
	  try {
	      String xmldata = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"+
	      "<s:Envelope s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">"+
	      "<s:Body>"+
	      "<u:ForceTermination xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\" />"+
	      "</s:Body>"+
	      "</s:Envelope>";
 
 
	      //Create socket
	      String hostname = "fritz.box";
	      int port = 49000;
	      InetAddress  addr = InetAddress.getByName(hostname);
	      Socket sock = new Socket(addr, port);
 
	      //Send header
	      BufferedWriter  wr = new BufferedWriter(new OutputStreamWriter(sock.getOutputStream(),"UTF-8"));
	      wr.write("POST /upnp/control/WANIPConn1 HTTP/1.1");
	      wr.write("Host: fritz.box:49000" + "\r\n");
	      wr.write("SOAPACTION: \"urn:schemas-upnp-org:service:WANIPConnection:1#ForceTermination\""+"\r\n");
	      wr.write("Content-Type: text/xml; charset=\"utf-8\""+"\r\n");
	      wr.write("Content-Length: " + xmldata.length() + "\r\n");
	      wr.write("\r\n");
 
	      //Send data
	      wr.write(xmldata);
	      wr.flush();
 
	    } catch (Exception e) {
	      e.printStackTrace();
	    }
  }
}