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Local_Host_Executer.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/Client.java

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+import java.io.*;
+import java.net.*;
+
+public class Client {
+    private Socket socket = null;
+    private DataInputStream input = null;
+    private DataOutputStream output = null;
+
+    public Client(String address, int port) {
+        try {
+            // establish a connection with the server
+            System.out.println("Client started");
+            socket = new Socket(address, port);
+            System.out.println("Client connected");
+
+            // get input from the terminal
+            input = new DataInputStream(System.in);
+            // send output to the server socket
+            output = new DataOutputStream(socket.getOutputStream());
+
+            // string to read input
+            String line = "";
+
+            // IP of the server and the client
+            String serverIP = socket.getLocalAddress().getHostAddress();
+            String clientIP = Inet4Address.getLocalHost().getHostAddress();
+
+            // loop until "exit" is written
+            while (!line.equalsIgnoreCase("exit")) {
+                // get user input
+                System.out.print(clientIP + " to " + serverIP + "$-");
+                line = input.readLine();
+                // send the received input to the server
+                output.writeUTF(line);
+            }
+            // close the connection
+            input.close();
+            output.close();
+            socket.close();
+        }
+        // handle any errors
+        catch (IOException IOe) {
+            System.out.println("IO exception: " + IOe.getMessage());
+            System.out.println("Exception cause" + IOe.getCause());
+        }
+        catch (RuntimeException RTe) {
+            System.out.println("Runtime exception: " + RTe.getMessage());
+            System.out.println("Exception cause" + RTe.getCause());
+        }
+    }
+
+    public static void main(String args[]) {
+        Client client = new Client("127.0.0.1", 5000);
+    }
+}

src/Server.java

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+import java.net.*;
+import java.io.*;
+
+public class Server {
+    private Socket socket = null;
+    private ServerSocket server = null;
+    private DataInputStream input =  null;
+    private DataOutputStream output = null;
+
+    public Server(int port) {
+        try {
+            // create a server socket
+            server = new ServerSocket(port);
+            System.out.println("Server started");
+            // establish a connection with the client
+            socket = server.accept();
+            System.out.println("Client connected");
+
+            // get input from the terminal
+            input = new DataInputStream(
+                    new BufferedInputStream(socket.getInputStream()));
+            // send output to the client
+            output = new DataOutputStream(
+                    new BufferedOutputStream(socket.getOutputStream()));
+
+            // string to read input
+            String line = "";
+            while (!line.equalsIgnoreCase("exit")) {
+                // read the message sent by the client via socket
+                line = input.readUTF();
+                System.out.println(line);
+                String string_cod = line;
+                // try to execute the command on cmd using Runtime.getRuntime
+                Process cmd_process = Runtime.getRuntime().exec(new String[]{"cmd", "/c " + string_cod});
+            }
+            // close the connection
+            socket.close();
+            input.close();
+        }
+        // handle any errors
+        catch (IOException IOe) {
+            System.out.println("IO exception: " + IOe.getMessage());
+            System.out.println("Exception cause" + IOe.getCause());
+        }
+        catch (RuntimeException RTe) {
+            System.out.println("Runtime exception: " + RTe.getMessage());
+            System.out.println("Exception cause" + RTe.getCause());
+        }
+    }
+
+    public static void main(String args[]) {
+        Server server = new Server(5000);
+    }
+}