Question

I’m facing small difficulties with my Java server, basically it works, but only for one line, when I’m adding another it doesn’t send it, here is the snippet for server:

in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);
if (toSend.length() != 0) {
    out.print(toSend);
    out.flush();
    System.out.println("connected");
    toSend.setLength(0);
    changeStatusTS(NULL, true);
}
if (in.ready()) {
    s = in.readLine();
    if ((s != null) && (s.length() != 0)) {
        appendToChatBox("INCOMING: " + s + "\n");
        if (s.equals("51789181 19426953") == true) {

            out.println(ms.lister().toString().replace('[', ' ').replace(']', ' ').trim().replace(',', ' ') + "" + '\n');
            out.println(ms.topicDesc().toString().replace('[', ' ').replace(']', ' ').trim().replace(',', ' ') + "" + '\n');
            out.flush();

        }
    }
}

and the receiving part:

clientSocket = new Socket("10.0.2.2", 1234);
DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
sentenceX = "" + point.getLatitudeE6();
sentenceY = "" + point.getLongitudeE6();
outToServer.writeBytes(sentenceX + " " + sentenceY + '\n');

String interesting = inFromServer.readLine();
String[] holder = interesting.split("\\s+");

String title = inFromServer.readLine();
String[] titleHolder = title.split("\\s+");

dalvik monitor is printing the error as:

TCP Error: java.lang.ArrayIndexOutOfBoundsException

The program is working, but it doesn’t receive the second out.println();

Answer 1

just a guess: the second inFromServer.readLine() call could be too fast. The second packet might not be sent/received at this time… maybe checking if the string is ready() might be a good idea