vs_uebung4/VerteilteSysteme-Examples/src/verteiltesysteme/socket/simple/TCPServer.java

/* Angelehnt an Kurose/Ross Computernetzwerke (bis 5e Java, ab 6e Python) */

package verteiltesysteme.socket.simple;

import java.io.*;
import java.net.*;

class TCPServer {
	public static void main(String argv[]) throws Exception {
		int tcpPort = 36037;
		String clientSentence;
		String capitalizedSentence;

		// Server-Socket erzeugen
		ServerSocket welcomeSocket = new ServerSocket(tcpPort);
		
		while (true) {
			Socket connectionSocket = welcomeSocket.accept();

			BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
			DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());

			clientSentence = inFromClient.readLine();
			capitalizedSentence = clientSentence.toUpperCase() + '\n';
			outToClient.writeBytes(capitalizedSentence);
		}
	}
}