连接建立后服务器套接字程序未执行

与客户端成功连接后，我在服务器端的 java 程序没有执行。客户端在此处发起连接，并根据程序要求根据服务器发送一些数据。但是服务器在从 inputStreamBuffer 读取后不执行代码行。这是代码：

对于服务器 ::

//Pgm implements server portion for subnet game 
import java.util.*;
import java.net.*;
import java.io.*;
public class ServerTCP{
    public static void main(String[] args)
    {
        Scanner sc1 = new Scanner(System.in);
        int port = sc1.nextInt();//Enter port number to bind with
        try{
        ServerSocket w_s = new ServerSocket(port);
            while(true){
                    System.out.println("Starting Server");
                    Socket sok = w_s.accept();//welcome Socket
                    System.out.println("Request Came");
                    BufferedReader sc = new BufferedReader(new   InputStreamReader(sok.getInputStream()));
                    DataOutputStream out = new DataOutputStream(sok.getOutputStream());
                    String str = sc.readLine();//not executing after this line
                    System.out.println("Data received"+str);
                    String[] val = str.split("E");
                    String ip1 = val[0];
                    System.out.println(ip1);
                    String ip2 = val[1];
                    System.out.println("1");
                    String sub = val[2];                    
                    String[] ip1_parts = ip1.split(".");
                    String[] ip2_parts = ip2.split(".");
                    String[] sub_parts = sub.split(".");
                    String result="true";
                    for(int i=0;i<4;i++){
                    if(((Integer.parseInt(ip1_parts[i])) & (Integer.parseInt(sub_parts[i]))) != (Integer.parseInt(ip2_parts[i]) & Integer.parseInt(sub_parts[i]))){
                        result="false";
                        break;
                    }
                        }
                 out.writeBytes(result);
                 }
            }
             catch(Exception e){
                System.out.println(e);
                }
        }
}       

客户：

//Program implements client machine for TCP connection
import java.util.Scanner;
import java.io.*;
import java.net.*;
public class ClientTCP{
public static void main(String[] args)
{
    String ip;
    int host;
    Scanner sc = new Scanner(System.in);
    System.out.println("Enter ip address of host/server:");
    ip=sc.next();
    System.out.println("Enter Server port number:");
    host=sc.nextInt();
    try{
        System.out.println("Enter both ip addresses one by one followed by subnet mask to transmit");
        String ip1=sc.next();
        String ip2=sc.next();
        String sub=sc.next();
        String send = ip1+"E"+ip2+"E"+sub;          
        Socket sok = new Socket(ip,host);
        System.out.println("Connection Established");
        DataOutputStream out = new DataOutputStream(sok.getOutputStream());

        BufferedReader rev = new BufferedReader(new InputStreamReader(sok.getInputStream()));

        System.out.println("Sending String:"+send);
        out.writeBytes(send);
        System.out.println("Data Sent");
        String res = rev.readLine();
        if(res.equals("true")){
            System.out.println("Server says: Ip addresses belongs to same network");
            }else{
            System.out.println("Ip addresses belongs to different network");
            }
        out.close();
        rev.close();
        sok.close();
        }
    catch(Exception e){
        System.out.println(e);
        }
    }

}

该程序实现了子网游戏，它依次向客户端询问两个 IP 地址和一个子网掩码，并将这些数据发送到服务器，服务器在回复中检查两个 IP 地址是否属于同一网络（子网）或不同。请检查这个。提前致谢：）