diff --git a/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayClient.java b/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayClient.java new file mode 100644 index 0000000000000000000000000000000000000000..b37f97efdc66d9dd09a1aaef5df6eaad842f7b6a --- /dev/null +++ b/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayClient.java @@ -0,0 +1,82 @@ +package MV3500Cohort2020JulySeptember.homework2.Garibay; + +import java.io.BufferedReader; +import java.io.BufferedWriter; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.OutputStreamWriter; +import java.net.Socket; + +/** + * + * @author chris + */ +public class GaribayClient { + // IPv6 String constant for localhost address, similarly IPv4 127.0.0.1 + public final static String LOCALHOST = "0:0:0:0:0:0:0:1"; + + public static void main(String[] args) { + + // Local vars/fields + Socket socket; + InputStream is; + InputStreamReader isr; + BufferedReader br; + String serverMessage; + + try { + while (true) { + + //Added a joke to begin with + System.out.println("Where do teeth like to shop?"); + + // We request an IP to connect to ("localhost") and + // port number at that IP (2317). This establishes + // a connection to that IP in the form of a Socket + // object; the server uses a ServerSocket to wait for + // connections. + socket = new Socket(LOCALHOST, 2317); // locohost? + + // Now hook everything up (i.e. set up the streams), Java style: + is = socket.getInputStream(); + isr = new InputStreamReader(is); + br = new BufferedReader(isr); + + // Read a single line written by the server. We'd + // do things a bit differently if there were many lines to be read + // from the server instead of one only. + serverMessage = br.readLine(); + System.out.println("=================================================="); + //changed the connecting lingo + + System.out.println("The message the server sent was: '" + serverMessage + "'"); + + //If the server predicts the correct answer, the client will + //say he is correct and break from the loop. Ultimately ending + //the connection. + if (serverMessage.contentEquals("The Gap")) { + System.out.println("Correct!"); + break; + } else { + System.out.println("Nope! Try again."); + } + + // socket gets closed, either automatically/silently by this code (or possibly by the server) + } // end while(true) + } catch (IOException e) { + System.err.println("Problem with TcpExample3ServerClient networking:"); // describe what is happening + System.err.println("Error: " + e); + + // Provide more helpful information to user if exception occurs due to running twice at one time + if (e instanceof java.net.BindException) { + System.err.println("*** Be sure to stop any other running instances of programs using this port!"); + } + } finally { + + // program exit: tell somebody about that + System.out.println("\nclient exit"); + } + } +} diff --git a/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayServer.java b/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayServer.java new file mode 100644 index 0000000000000000000000000000000000000000..6fcca6926b47c6576af89c4ae7d307002c8d6123 --- /dev/null +++ b/assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayServer.java @@ -0,0 +1,103 @@ +package MV3500Cohort2020JulySeptember.homework2.Garibay; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.PrintStream; +import java.net.InetAddress; +import java.net.ServerSocket; +import java.net.Socket; + +/** + * + * @author chris + */ +public class GaribayServer { + public static void main(String[] args) { + try { + + // ServerSocket waits for a connection from a client. + // Notice that it is outside the loop; ServerSocket + // needs to be made only once. + + + ServerSocket serverSocket = new ServerSocket(2317); + OutputStream os; + PrintStream ps; + InetAddress localAddress, remoteAddress; + int localPort, remotePort; + + // Server is up and waiting (i.e. "blocked" or paused) + // Loop, infinitely, waiting for client connections. + // Stop the program somewhere else. + //initialize the messageToClient + String messageToClient = "Thomas' house"; + + //Want the server to provide several answers to the question + //To keep the while loop, I just initialized a variable as a global + //to change as the code executes. + int i = 0; + + //Added a length for the while loop dependent on the value of i. + while (i<4) { + + // block until connected to a client + try (Socket clientConnection = serverSocket.accept()) { + + // Now hook everything up (i.e. set up the streams), Java style: + os = clientConnection.getOutputStream(); + ps = new PrintStream(os); + //changed what the server says to the client in response + ps.println(messageToClient); + + // Print some information locally about the Socket connection. + // This includes the port and IP numbers on both sides (the socket pair). + localAddress = clientConnection.getLocalAddress(); + remoteAddress = clientConnection.getInetAddress(); + localPort = clientConnection.getLocalPort(); + remotePort = clientConnection.getPort(); + + // 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 )) + // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 )) + // Why is the first IP/port the same, while the second set has different ports? + System.out.println("TcpExample3Server socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( " + + remoteAddress.toString() + ", " + remotePort + " ))"); + + //Provides different answers to the client + if (i == 0) { + messageToClient = "American Eagle"; + } + if (i == 1) { + messageToClient = "At Urban Outfitters"; + } + if (i == 2) { + messageToClient = "The Gap"; + } + //Iterates i to change the answers provided. + i += 1; + + // Notice the use of flush() and try w/ resources. Without + // the try w/ resources the Socket object may stay open for + // a while after the client has stopped needing this + // connection. try w/ resources explicitly ends the connection. + ps.flush(); + // like it or not, you're outta here! + } + } + } + catch (IOException e + + + ) { + System.err.println("Problem with TcpExample3Server networking: " + e); + + // Provide more helpful information to user if exception occurs due to running twice at one time + if (e instanceof java.net.BindException) { + System.err.println("*** Be sure to stop any other running instances of programs using this port!"); + } + } +} +}