diff --git a/deliverables/src/MV3500Cohort2018JulySeptember/homework1/JacksonAssignment1.java b/deliverables/src/MV3500Cohort2018JulySeptember/homework1/JacksonAssignment1.java new file mode 100644 index 0000000000000000000000000000000000000000..57a4e83e289186f71f6108b2d787292627a67d6f --- /dev/null +++ b/deliverables/src/MV3500Cohort2018JulySeptember/homework1/JacksonAssignment1.java @@ -0,0 +1,80 @@ +/* + * To change this license header, choose License Headers in Project Properties. + * To change this template file, choose Tools | Templates + * and open the template in the editor. + */ +package MV3500Cohort2018JulySeptember.homework1; + +import java.io.OutputStream; +import java.io.PrintStream; +import java.net.InetAddress; +import java.net.ServerSocket; +import java.net.Socket; + +/** + * + * @author John + */ +public class JacksonAssignment1 { + + + public static void main(String[] args) { + try { + System.out.println("Hello invoker, this server process is now running"); // reporting for duty + + int popularityCount = 0; // state + + ServerSocket serverSocket = new ServerSocket(2317); // server decides here what port to listen on. + // of interest: often client doesn't care what port it uses locally when connecting to that server port. + + // Loop, infinitely, waiting for client connections. + // Stop the program somewhere else. + while (true) { + Socket clientConnection = serverSocket.accept(); // blocks! then proceeds once a connection is "accept"ed + + /** + * changed connectionCount to popularityCount + */ + popularityCount++; + + OutputStream os = clientConnection.getOutputStream(); + PrintStream ps = new PrintStream(os); + + ps.println("This client response was written by server JacksonAssignment1"); // to remote client + System.out.println("This server response was written by server JacksonAssignment1"); // to server console + + ps.println("You were connection #" + popularityCount + ", by my count"); + + // Print some information locally about the Socket + // connection. This includes the port and IP numbers + // on both sides (the socket pair.) + InetAddress localAddress = clientConnection.getLocalAddress(); + InetAddress remoteAddress = clientConnection.getInetAddress(); + + int localPort = clientConnection.getLocalPort(); + int remotePort = clientConnection.getPort(); // remember the prior question, why are 2 ports different? + + // My socket pair connection looks like this, to localhost: + // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54876 )) note IPv6 + // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 )) + System.out.println("Socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( " + + remoteAddress.toString() + ", " + remotePort + " ))"); + + if (popularityCount == 1){ + + System.out.println("Your server has received " + popularityCount + " hit"); // report progress + } + else { + System.out.println("Your server has received " + popularityCount + " hits"); // report progress + } + ps.flush(); + clientConnection.close(); + } + } catch (Exception e) { + /** + * added to the println for fun + */ + System.out.println("Error code: " + e); + } + } +} \ No newline at end of file