java - Can't read the receivePacket -



java - Can't read the receivePacket -

why don't receive packet eclipse server ?

i start server.java in eclipse java application , client android application server print out text client client doesn't response.

server.java

public static void main(string... args) throws exception { datagramsocket serversocket = new datagramsocket(4444); byte[] receivedata = new byte[1024]; byte[] senddata = new byte[1024]; while(true) { //empfang datagrampacket receivepacket = new datagrampacket(receivedata, receivedata.length); serversocket.receive(receivepacket); string sentence = new string( receivepacket.getdata()); system.out.println("received: " + sentence); //senden inetaddress ipaddress = receivepacket.getaddress(); int port = receivepacket.getport(); string sendsentence = "packet received"; senddata = sendsentence.getbytes(); datagrampacket sendpacket = new datagrampacket(senddata, senddata.length, ipaddress, port); serversocket.send(sendpacket); } }

and client part

register_str = "hello, world!"; // convert string inputstream inputstream = new bytearrayinputstream(register_str.getbytes()); // read bufferedreader bufferedreader br = new bufferedreader(new inputstreamreader(is)); try{ datagramsocket clientsocket = new datagramsocket(); inetaddress ipaddress = inetaddress.getbyname("10.0.2.2"); byte[] senddata = new byte[1024]; byte[] receivedata = new byte[1024]; string sentence = br.readline(); senddata = sentence.getbytes(); datagrampacket sendpacket = new datagrampacket(senddata, senddata.length, ipaddress, 4444); clientsocket.send(sendpacket); datagrampacket receivepacket = new datagrampacket(receivedata, receivedata.length); clientsocket.receive(receivepacket); string receivedsentence = new string(receivepacket.getdata()); system.out.println("from server:" + receivedsentence); clientsocket.close(); }catch(exception x){ }

what doing wrong?

java eclipse response server

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