From 3b74a4938c16d9920b2cb27ef325147e5cb4e276 Mon Sep 17 00:00:00 2001
From: John Furr <John Furr@Johns_Asus>
Date: Wed, 1 Aug 2018 15:58:50 -0700
Subject: [PATCH] Working homework2, needs documentation.
---
.../homework2/Furr/FurrTcpClient.java | 122 ++++++------
.../homework2/Furr/FurrTcpServer.java | 181 +++++++++---------
2 files changed, 151 insertions(+), 152 deletions(-)
diff --git a/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpClient.java b/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpClient.java
index 68a529c017..31ec1cc16d 100644
--- a/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpClient.java
+++ b/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpClient.java
@@ -1,4 +1,3 @@
-
package MV3500Cohort2018JulySeptember.homework2.Furr;
import java.io.*;
@@ -6,75 +5,68 @@ import java.net.*;
import java.util.Scanner;
/**
- * Before, we always used telnet to connect to the server.
- * Here we are now writing our own program to do the connection.
- *
- * As you will see, when we run this after we start the server
- * we will see the same string telnet printed, sent by the server.
- * The output at the server will show different socket pairs for
- * each time we ran it.
- *
- * @author mcgredo
- * cd /cygdrive/e/Documents/NPS/MV3500_Internetwork_Communications/NetworkedGraphicsMV3500/deliverables/build/classes/MV3500Cohort2018JulySeptember/homework2/Furr
+ * Before, we always used telnet to connect to the server. Here we are now writing our own program to do the connection.
+ *
+ * As you will see, when we run this after we start the server we will see the same string telnet printed, sent by the server. The output at the server will show different socket pairs for each time we ran it.
+ *
+ * @author mcgredo cd /cygdrive/e/Documents/NPS/MV3500_Internetwork_Communications/NetworkedGraphicsMV3500/deliverables/build/classes/MV3500Cohort2018JulySeptember/homework2/Furr
*/
public class FurrTcpClient {
public final static String LOCALHOST = "0:0:0:0:0:0:0:1"; // String constant, i.e. 127.0.0.1
-
- public static void main(String[] args)
- {
+
+ public static void main(String[] args) {
boolean openConnection = true;
- try
- {
- while(true)
- {
- System.out.println("creating socket");
-
- // 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 the Socket
- // object; the server uses a ServerSocket to wait for
- // connections.
- Socket socket = new Socket(LOCALHOST, 2317); // locohost?
-
- // Read the single line written by the server. We'd
- // do things a bit differently if many lines to be read
- // from the server, instead of one only.
- InputStream is = socket.getInputStream();
- InputStreamReader isr = new InputStreamReader(is);
- BufferedReader br = new BufferedReader(isr);
-
- String serverMessage = br.readLine();
- System.out.println("==================================================");
- System.out.println("Now we're talking!");
- System.out.println("The message the server sent was " + serverMessage+"\n");
- serverMessage = br.readLine();
- while(serverMessage != null)
- {
- serverMessage = br.readLine();
- System.out.println(serverMessage);
- }
-
- int x=0;
- while(x<5)//openConnection)
- {
- Scanner in = new Scanner(System.in);
- String s = in.nextLine();
- OutputStream os = socket.getOutputStream();
- PrintStream ps = new PrintStream(os);
- ps.println(s);
- x++;
- }
- // socket gets closed, either automatically/silently this code (or possibly by server)
- } // end while(true)
- }
- catch(IOException e)
- {
- System.out.println("Problem with client: "); // describe what is happening
- System.out.println(e);
- }
+ try {
+ while (openConnection) {
+ System.out.println("The Client is creating socket and it's awesome...");
+
+ // 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 the Socket
+ // object; the server uses a ServerSocket to wait for
+ // connections.
+ Socket socket = new Socket(LOCALHOST, 2317); // locohost?
+
+ // Read the single line written by the server. We'd
+ // do things a bit differently if many lines to be read
+ // from the server, instead of one only.
+ InputStream is = socket.getInputStream();
+ InputStreamReader isr = new InputStreamReader(is);
+ BufferedReader br = new BufferedReader(isr);
+
+ String serverMessage = br.readLine();
+ System.out.println("==================================================");
+ System.out.println("Now we're talking!");
+ System.out.println("\nThe message the server sent was " + serverMessage );
+
+ int x = 0;
+ while (x < 10)//openConnection)
+ {
+ System.out.println("\nType something to the server: ");
+ Scanner in = new Scanner(System.in);
+ String s = in.nextLine();
+ OutputStream os = socket.getOutputStream();
+ PrintStream ps = new PrintStream(os);
+ ps.println("Your client says: " + s);
+ x++;
+ serverMessage = br.readLine();
+ System.out.println(serverMessage);
+ if(serverMessage.contains("bye"))
+ {
+ openConnection = false;
+ socket.close();
+ }
+
+ }
+ // socket gets closed, either automatically/silently this code (or possibly by server)
+ } // end while(true)
+ } catch (IOException e) {
+ System.out.println("Problem with client: "); // describe what is happening
+ System.out.println(e);
+ }
// program exit: tell somebody about that
System.out.println("client exit");
- }
-
+ }
+
}
diff --git a/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpServer.java b/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpServer.java
index 39f733819f..0e3ed9bcb0 100644
--- a/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpServer.java
+++ b/deliverables/src/MV3500Cohort2018JulySeptember/homework2/Furr/FurrTcpServer.java
@@ -4,102 +4,109 @@ import java.io.*;
import java.net.*;
/**
- * Very slightly more complex than example1. A complete copy of
- * example 2. The only thing this does
- * differently is introduce a loop into the response, so you don't
- * have to restart the program after one response. Also, it prints
- * out the socket pair the server sees. Run the program via telnet
- * several times and compare the socket pairs.
- *
+ * Very slightly more complex than example1. A complete copy of example 2. The only thing this does differently is introduce a loop into the response, so you don't have to restart the program after one response. Also, it prints out the socket pair the server sees. Run the program via telnet several times and compare the socket pairs.
+ *
* telnet localhost 2317
- *
- * If you're sophisticated you can contact the instructor's computer
- * while running this program.
- *
+ *
+ * If you're sophisticated you can contact the instructor's computer while running this program.
+ *
* telnet <ipOfServersLaptop> 2317
- *
+ *
* And have him display the socket pairs he got.
+ *
* @author mcgredo
- *
- * to change to build file:
- * cd /cygdrive/e/Documents/NPS/MV3500_Internetwork_Communications/NetworkedGraphicsMV3500/deliverables/build/classes/MV3500Cohort2018JulySeptember/homework2/Furr
+ *
+ * to change to build file: cd /cygdrive/e/Documents/NPS/MV3500_Internetwork_Communications/NetworkedGraphicsMV3500/deliverables/build/classes/MV3500Cohort2018JulySeptember/homework2/Furr
*/
-public class FurrTcpServer
-{
+public class FurrTcpServer {
- public static void main(String[] args)
- {
- String[] responses = new String[10];
- responses[0] = "Hello";
- responses[1] = "Are you there?";
- responses[2] = "Glad you stopped by to say hi";
- responses[3] = "What are you planning on doing today?";
- responses[4] = "Not that this program cares, these are pre-recored";
- responses[5] = "That's right, you can say whatever you want I'll say the samething";
- responses[6] = "Makes this chat less exciting doesn't it.";
- responses[7] = "Your hair looks nice today";
- responses[8] = "The FBI said so.";
- responses[9] = "This is really teadious, I'm done talking. Good bye!";
- int index =0;
- 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);
+ public static void main(String[] args) throws IOException {
+
+ String[] responses = new String[10]; //canned responses for multiple inputs from client
+ responses[0] = "Hello";
+ responses[1] = "Are you there?";
+ responses[2] = "Glad you stopped by to say hi";
+ responses[3] = "What are you planning on doing today?";
+ responses[4] = "Not that this program cares, these are pre-recored";
+ responses[5] = "That's right, you can say whatever you want I'll say the samething";
+ responses[6] = "Makes this chat less exciting doesn't it.";
+ responses[7] = "Your hair looks nice today";
+ responses[8] = "The FBI said so.";
+ responses[9] = "This is really teadious, I'm done talking. Good bye!";
+ int index = 0;
+
+ 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);
+ System.out.println("Server Socket open and waiting");
+ boolean connectionActive; //used for a inner while loop conditional below
+
+ // Loop, infinitely, waiting for client connections.
+ // Stop the program somewhere else.
+ while(true)
+ {
+ Socket clientConnection = serverSocket.accept(); // block until connected
+ connectionActive = true; //ensure after every new connection the boolean is reset to true.
+ index =0; //reset the index for responses back to 0 each time a new connection happens.
+
+ while (connectionActive) {
+
+ OutputStream os = clientConnection.getOutputStream();
+ PrintStream ps = new PrintStream(os);
+ ps.println("This was written by the server");
- // Loop, infinitely, waiting for client connections.
- // Stop the program somewhere else.
- while(true)
- {
- Socket clientConnection = serverSocket.accept(); // block until connected
- OutputStream os = clientConnection.getOutputStream();
- PrintStream ps = new PrintStream(os);
-
InputStream serverIS = clientConnection.getInputStream();
InputStreamReader serverISR = new InputStreamReader(serverIS);
BufferedReader br = new BufferedReader(serverISR);
- ps.println("This was written by the server");
-
- System.out.println(br+"\n");
- ps.println(responses[index]);
- index ++;
-
- // 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();
-
- // 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?
+ String line;
+
+ // 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();
+
+ // 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("\nSocket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( "
+ + remoteAddress.toString() + ", " + remotePort + " ))");
+ while (index < 10) {
+ while ((line = br.readLine()) != null)//&& index<10)
+ {
+ //need check to see if
+
+ System.out.println("\n" + line);
+ ps.println("\tThe SERVER has responded with: " + responses[index]);
+ System.out.println("Server has sent: " + responses[index]);
+ index++;
+
+ // Notice the use of flush() and close(). Without
+ // the close() to Socket object may stay open for
+ // a while after the client has stopped needing this
+ // connection. Close() explicitly ends the connection.
+ }
+
+ }
+ connectionActive = false;
+ ps.flush();
+ clientConnection.close(); // like it or not, you're outta here!
+ }
+ }
+
+ } catch (IOException e) {
+ System.out.println("problem with networking" + e);
+ }
+ }
- System.out.println("Socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( " +
- remoteAddress.toString() + ", " + remotePort + " ))");
-
- // Notice the use of flush() and close(). Without
- // the close() to Socket object may stay open for
- // a while after the client has stopped needing this
- // connection. Close() explicitly ends the connection.
- ps.flush();
- clientConnection.close(); // like it or not, you're outta here!
- }
- }
- catch(IOException e)
- {
- System.out.println("problem with networking");
- }
-
- }
-
-}
\ No newline at end of file
+}
--
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