Created
January 20, 2016 15:25
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| package stackoverflow; | |
| import java.io.ObjectInputStream; | |
| import java.io.ObjectOutputStream; | |
| import java.net.*; | |
| import java.util.Scanner; | |
| public class Sockets { | |
| public static void main(String... args) throws Exception { | |
| ServerSocket server = new ServerSocket(); | |
| server.bind(new InetSocketAddress("localhost", 0)); | |
| Thread serverThread = new Thread(() -> { | |
| while (!Thread.currentThread().isInterrupted()) { | |
| try { | |
| Socket socket = server.accept(); | |
| ObjectInputStream in = new ObjectInputStream(socket.getInputStream()); | |
| String msg = (String) in.readObject(); | |
| System.out.println("Server here: read message > " + msg); | |
| String ack = "ok"; | |
| ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream()); | |
| out.writeObject(ack); | |
| System.out.println("Server here: written acknowledge > " + ack); | |
| socket.close(); | |
| } catch (Exception e) { | |
| System.err.println("Error while processing request"); | |
| e.printStackTrace(); | |
| } | |
| } | |
| }); | |
| serverThread.setName("server-accepting-thread"); | |
| serverThread.setDaemon(true); | |
| serverThread.start(); | |
| Scanner shell = new Scanner(System.in); | |
| while (true) { | |
| System.out.println("Write your message and press 'Enter'. Type 'quit' to terminate the program"); | |
| try { | |
| String request = shell.nextLine(); | |
| if (request.equals("quit")) { | |
| break; | |
| } | |
| Socket socket = new Socket("localhost", server.getLocalPort()); | |
| ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream()); | |
| System.out.println("Client here: sending request > " + request); | |
| out.writeObject(request); | |
| ObjectInputStream in = new ObjectInputStream(socket.getInputStream()); | |
| String response = (String) in.readObject(); | |
| System.out.println("Client here: server responded > " + response); | |
| socket.close(); | |
| } catch (Exception e) { | |
| System.err.println("Error while sending request"); | |
| e.printStackTrace(); | |
| } | |
| } | |
| } | |
| } |
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