Question

我已经为服务器消息发送应用程序创建了一个虚拟客户端。这里客户端是一个Android设备，服务器是简单的Java服务器，它在控制台上打印它收到的消息。我用套接字来实现这个。当我运行应用程序时，在客户端是Android设备时，从客户端发送消息和服务器在控制台上打印该消息之间会有2-3秒的延迟。但是，当客户端是另一台PC时，没有明显的延迟。如何消除这种延迟及其来源是什么？有人请帮忙！

我的服务器代码是：

import java.net.*;

import java.io.*;

class Server    
{

void connectNread()
{ 
    System.out.println("Server Started!! ... ");
    try
    {
        ServerSocket ss = new ServerSocket(5000);
        Socket s = ss.accept();
        System.out.println(s.getInetAddress().getHostName() + "   Connected!!!");
        InputStreamReader stream = new InputStreamReader(s.getInputStream());
        BufferedReader reader =  new BufferedReader(stream);
        String message = null;
        message  = reader.readLine();
        long  output = System.currentTimeMillis();
        System.out.println(output+" : " +  message);
        stream.close();
        s.close();
        ss.close();
    }

    catch(Exception e)
    {
        System.out.println(e);
    }
}

public static void main(String s[])
{
    new Server().connectNread();
}


}

Android客户端的代码是：

public class MainActivity extends ActionBarActivity {

Button connectButton;
@Override
protected void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    connectButton = (Button)findViewById(R.id.connect);
}
private class connectToNetwork extends AsyncTask<Integer,Integer,Integer>
{
    protected Integer doInBackground(Integer... i)
    {
        try
        {
            Socket s = new Socket("192.168.1.22",5000);
            PrintWriter writer = new PrintWriter(s.getOutputStream());
            writer.println("Its Printed!!");
            writer.flush();
            writer.close();
            s.close();
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
        return 1;
    }
    protected void onProgressUpdate(Integer progress) 
    {
        ///setProgressPercent(progress[0]);
    }

    protected void onPostExecute(Integer  result) 
    {
        //showDialog("Downloaded " + result + " bytes");
    }

}

public void connect(View v) 
{
    String TAG = null;
    new connectToNetwork().execute(1,1,1);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

请建议我在哪里做错。所有设备都在同一个wifi网络上。

客户端到服务器消息传输期间的延迟

0 个答案: