Android UDP communication

Android UDP communication is very simple, call the following method can realize the client and server UDP communication,

Just transfer the data to the server into a byte array format and pass it in.

/** client sends UDP data to server * /public static void Sendudpdata (final byte[] bytestosend) {new Thread () {@Override public void run () { try{//IP is the server address inetaddress serveraddress = Inetaddress.getbyname (IP); Port is the server port number int serverport =PORT;                Datagramsocket socket = new Datagramsocket ();                                Socket.setsotimeout (8000); Sendpacket sent packets Datagrampacket Sendpacket = new Datagrampacket (bytestosend,bytestosend.length,serveraddr                Ess,serverport); Receivepacket returned packet datagrampacket receivepacket = new Datagrampacket (New Byte[bytestosend.length],bytest                Osend.length);                int tries = 0;                Boolean receivedresponse = false;                    do{socket.send (Sendpacket);                        try{socket.receive (Receivepacket);                        if (!receivepacket.getaddress () equals (serveraddress)) {throw new IOException ("Packet received from unknown source");                    } Receivedresponse = true;                        }catch (Interruptedioexception e) {tries +=1; LOG.I ("TAG", "Received:" + "time Out, "+ (5-tries));                }}while ((!receivedresponse) && (Tries > 5)); if (receivedresponse) {//here can get the data returned by the server string Receivedata=new string (receivepacket.                    GetData ());                LOG.I ("TAG", "Return Data:" +receivedata);                }else{log.i ("TAG", "NO response--giving up");            } socket.close ();            }catch (Exception e) {e.printstacktrace (); }}}.start ();}

Android UDP communication