java - Desktop server and android client local connection -

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i try connect windows desktop java server android client. i'm working cross-platform. desktop server , desktop client working fine same code, desktop server , android client has interesting problem. manifest permissions setted.

desktop java server code

serversocket serversocket = new serversocket(tcp_port); socket link = null; while(true) {      link = serversocket.accept();      printwriter output = new printwriter(link.getoutputstream(),true); // flush true      bufferedreader input = new bufferedreader(new inputstreamreader(link.getinputstream()));      // step 1 password auth      string message = input.readline(); // wait password      if(message.equals(password)) {            output.println("correct");             message = null;            message = input.readline(); // wait udp port request            if(message.equals("udp")) {                 output.println(udp_port+""); etc . .

android client code

socket link = null;  link = new socket(hostip,tcp_port); printwriter output = new printwriter(link.getoutputstream(),true); // auto flush true bufferedreader input = new bufferedreader(new inputstreamreader(link.getinputstream())); while(true) {      // step1 send password wait response      output.println(password);      string message = input.readline(); // password response      if(message.equals("correct")) {           output.println("udp"); // request udp           message = null;           message = input.readline();           udpport = integer.parseint(message);  etc . .

my problem same code works fine on java desktop client , java desktop server when try connect java desktop server android client password auth part works fine

output.println(udp_port+""); send data 2 times when looked server side sends empty string firstly , sends value wrong ?

       message = null;        message = input.readline(); // wait udp port request        if(message.equals("udp")) {

it reads empty string , jump if statement if use

       message = null;        message = input.readline(); // read empty string        message = input.readline(); // read data        if(message.equals("udp")) {             statement works

this expected behavior if try read data before has been received - more occur when receiving remote system, possibility must allow for.

your application must wait until full message has been collected, in case looping on readline() call until non-null message.


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