Java tutorial
//package com.java2s; public class Main { public static String createByeByeMessage() { /* NOTIFY * HTTP/1.1 HOST: 239.255.255.250:1900 NTS: ssdp:byebye USN: uuid:0b1f697a-a0fa-5181-010f-8edcc5a1a3e8::upnp:rootdevice NT: upnp:rootdevice CONTENT-LENGTH: 0 */ StringBuffer sb = new StringBuffer(); sb.append("NOTIFY * HTTP/1.1").append("\n"); sb.append("HOST: 239.255.255.250:1900").append("\n"); sb.append("NTS: ssdp:byebye").append("\n"); sb.append("USN: uuid:0b1f697a-a0fa-5181-010f-8edcc5a1a3e8::upnp:rootdevice").append("\n"); sb.append("NT: upnp:rootdevice").append("\n"); sb.append("CONTENT-LENGTH: 0").append("\n"); return sb.toString(); } }