package com.example.tcp_test_3;

import androidx.appcompat.app.AppCompatActivity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class MainActivity extends AppCompatActivity
{
    Button buttonConnect;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        buttonConnect = (Button)findViewById(R.id.connect);
        buttonConnect.setOnClickListener(buttonConnectOnClickListener);
    }

    OnClickListener buttonConnectOnClickListener = new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            MyClientTask myClientTask = new MyClientTask("192.168.1.72", 8888);
            myClientTask.execute();
        }
    };

    public class MyClientTask extends AsyncTask<Void, Void, Void> {

        String response = "";
        String dstAddress;
        int dstPort;

        MyClientTask(String addr, int port){
            dstAddress = addr;
            dstPort = port;
        }

        @Override
        protected Void doInBackground(Void... arg0) {

            Socket socket = null;

            try {
                socket = new Socket(dstAddress, dstPort);
                OutputStream output = socket.getOutputStream();
                PrintWriter writer = new PrintWriter(output, true);
                writer.println("706");

            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                response = "UnknownHostException: " + e.toString();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                response = "IOException: " + e.toString();
            }finally{
                if(socket != null){
                    try {
                        socket.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
            }
            return null;
        }


    }
}