java - SocketTimeoutException: 読み取りタイムアウト

Question

これは単純なクライアント/サーバー ベースの ping/pong プログラムです。残念ながら、IT が機能せず、次のエラー メッセージが表示されます。

java.net.SocketTimeoutException: Read timed out
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(Unknown Source)
    at java.net.SocketInputStream.read(Unknown Source)
    at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
    at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
    at sun.nio.cs.StreamDecoder.read(Unknown Source)
    at java.io.InputStreamReader.read(Unknown Source)

CLIENT TASK 30 行で停止します。実際には、クライアントはサーバーが送信したものを読み取りません。ここにコード：

サーバ

package serverClient;

import java.net.*;
import java.io.*;
import java.util.concurrent.*;

public class Server {

    public static void main(String[]args){


        ExecutorService esp= Executors.newFixedThreadPool(50);
        try(ServerSocket ss= new ServerSocket(1027)){
            while(true){
                try{

                    Socket s=ss.accept();
                    Callable<Void> task=new ServerTask(s);
                    esp.submit(task);

                }
                catch(BindException be){}
                catch(ConnectException ce){}
                catch(NoRouteToHostException nrthe){}
                catch(IOException ioe){ioe.printStackTrace();}
            }
        }
        catch(Exception e){e.printStackTrace();}

    }
}

サーバータスク

package serverClient;

import java.util.concurrent.*;
import java.net.*;
import java.io.*;

public class ServerTask implements Callable <Void> {

    Socket s;

    ServerTask(Socket s){
        this.s=s;
    }

    public Void call(){
        BufferedWriter writer=null;
        BufferedReader reader=null;

        try{

            reader=new BufferedReader(new InputStreamReader(s.getInputStream()));
            writer=new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

            int i=0;
            StringBuilder sb=new StringBuilder();
            while((i=reader.read())!=-1){
                sb.append((char)i);
            }
            System.out.println("The client sends: "+sb);


            writer.write("pong");
            writer.flush();

        }   
        catch(IOException ioe){ioe.printStackTrace();}
        finally{

                try {
                    writer.close();
                } 
                catch (IOException ioe) {ioe.printStackTrace();}

            if(reader!=null){
                try{
                    reader.close();
                }
                catch(IOException ioe){ioe.printStackTrace();}
            }
            try{
                s.close();
            }
            catch(IOException ioe){ioe.printStackTrace();}

        }
        return null;
    }
}

クライアント

package serverClient;

import java.io.IOException;
import java.net.*;
import java.util.concurrent.*;

public class Client {

    public static void main(String[] args) {

        ExecutorService es= Executors.newSingleThreadExecutor();

        try {

            Socket s= new Socket(InetAddress.getLocalHost(),1027);
            try {
                s.setSoTimeout(50000);
            } 
            catch(SocketException se){se.printStackTrace();}

            Callable<Void> task=new ClientTask(s);
            es.submit(task);

        } 
        catch (UnknownHostException uhe) {uhe.printStackTrace();} 
        catch (IOException ioe) {ioe.printStackTrace();}

    }

}

クライアントタスク

package serverClient;

import java.util.concurrent.*;
import java.net.*;
import java.io.*;

public class ClientTask implements Callable <Void>{

    Socket s;

    ClientTask(Socket s){
        this.s=s;
    }

    public Void call(){

        BufferedWriter writer=null;
        BufferedReader reader=null;

        try{

            writer=new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
            reader=new BufferedReader(new InputStreamReader(s.getInputStream()));

            writer.write("ping");
            writer.flush();

            int i=0;
            StringBuilder sb=new StringBuilder();
            while((i=reader.read())!=-1){
                System.out.println("I'm reading.");
                sb.append((char)i);
            }
            System.out.println("The server sends: "+sb);


        }
        catch(IOException ioe){ ioe.printStackTrace();}

        finally{

                try {
                    writer.close();
                } 
                catch (IOException ioe) {ioe.printStackTrace();}

            if(reader!=null){
                try{
                    reader.close();
                }
                catch(IOException ioe){ioe.printStackTrace();}
            }
            try{
                s.close();
            }
            catch(IOException ioe){ioe.printStackTrace();}

        }
        return null;
    }

}