Android socket on server stopped

Question

I'm writing an TCP client in Android that sends data to a Java server. I'm now adding validation for when the server's not available and I got stuck on what to do when the server is killed suddenly (I'm actually exitting the server with JFrame.EXIT_ON_CLOSE since is a test server).

The issue is that when I close the server, the the client doesn't throws any exception whenever I write to the OutputStream nor when I read from the InputStream .

// This is inside a try block, catching IOException, and finally block closes all streams
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
while (mRun) {
    String response = in.readLine();
    Message message = Message.obtain();

    if (response != null && message != null) {
        message.obj = response;
        mHandler.sendMessage(message);
    }
}

Also, when I close the server, the system keeps logging about 10-20 of the following logs per second, or maybe more:

dalvikvm﹕ GC_FOR_ALLOC freed 499K, 6% free 9377K/9920K, paused 13ms, total 13ms

ALSO I have another thread that attempts to write to the Sockets 's OutputStream by using PrintWriter :

if(out != null && !out.checkError()) {
        Log.d(TAG, "Writing to output stream...");
        //...

And it seems to keep executing, which means checkError() is returning false

I'm new to Socket programming, so an explanation of why should I do what you tell me to do would be nice, thanks in advance.

Answer 1

I solved it by changing the following line

while (mRun) {

to

while (response = in.readLine() && socket.isConnected()) {