Skip to content
Snippets Groups Projects
Commit 8d34fadc authored by Brutzman, Don's avatar Brutzman, Don
Browse files

delete moved student examples

parent 3c21a197
No related branches found
No related tags found
No related merge requests found
Hide whitespace changes
Inline Side-by-side
examples/src/MV3500Cohort2021JulySeptember/homework1/FrankTCPExample3Client.java deleted 100644 → 0
+ 0
− 96
View file @ 3c21a197
package MV3500Cohort2021JulySeptember.homework1;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.Socket;
/*
* 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.
*/
/**
*
* @author justi
*/
public class FrankTCPExample3Client {
/**
*/
public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
/**
* Program invocation, execution starts here
*
* @param args command-line arguments
* @throws java.lang.InterruptedException
*/
public static void main(String[] args) throws InterruptedException {
// Local variables/fields
Socket socket = null;
InputStream is;
Reader isr;
BufferedReader br;
String serverMessage;
int clientLoopCount = 0;
try {
while (true) {
clientLoopCount++; // increment at beginning of loop for reliability
System.out.println(FrankTCPExample3Client.class.getName() + " 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 a Socket
// object; the server uses a ServerSocket to wait for
// connections.
socket = new Socket(LOCALHOST, 2318); // 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("==================================================");
System.out.print("Client loop " + clientLoopCount + ": ");
System.out.println("now we're talking!");
System.out.println("The message the server sent was: '" + serverMessage + "'");
// socket gets closed, either automatically/silently by this code (or possibly by the server)
if (serverMessage.equals("this is good bye message from the server")) { //if client recieved termanation message stop client
break;
}
Thread.sleep(1000); // turned it down to 1 second
} // end while(true) // infinite loops are dangerous, be sure to kill this process!
} catch (IOException e) {
System.err.println("Problem with " + FrankTCPExample3Client.class.getName() + " 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 // occurs after any other activity when shutting down
{
try {
if (socket != null) {
socket.close();
}
} catch (IOException e) {
}
// program exit: tell somebody about that happening. Likely cause: server drops connection.
System.out.println();
System.out.println("FrankTCPExample3Client.class.getName() + exit");
}
}
}
examples/src/MV3500Cohort2021JulySeptember/homework1/FrankTCPExample3Server.JPG deleted 100644 → 0
+ 0
− 0
View file @ 3c21a197
examples/src/MV3500Cohort2021JulySeptember/homework1/FrankTCPExample3Server.JPG

56.9 KiB

examples/src/MV3500Cohort2021JulySeptember/homework1/FrankTCPExample3Server.java deleted 100644 → 0
+ 0
− 107
View file @ 3c21a197
package MV3500Cohort2021JulySeptember.homework1;
import java.io.*;
import java.net.*;
/**
* Very slightly more complex than example1, further modifying example2. 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 (nc) localhost 2318
*
* If you're sophisticated you can contact the instructor's computer while
* running this program.
*
* telnet (nc) [ipNumberOfServerLaptop] 2317
*
* and have the instructor display the socket pairs received.
*
* @author mcgredo
* @author brutzman
*/
public class FrankTCPExample3Server {
/**
* Program invocation, execution starts here If already compiled, can run
* using console in directory ../../build/classes/ by invoking \ java
* -classpath . TcpExamples.TcpExample3Server
*
* @param args command-line arguments
*/
public static void main(String[] args) throws InterruptedException {
try {
// ServerSocket waits for a connection from a client.
// Notice that it is outside the loop; ServerSocket
// needs to be made only once.
System.out.println(FrankTCPExample3Server.class.getName() + " has started..."); // it helps debugging to put this on console first
ServerSocket serverSocket = new ServerSocket(2318); // changed from 2317 to 2318
OutputStream os;
PrintStream ps;
InetAddress localAddress, remoteAddress;
int localPort, remotePort;
int serverLoopCount = 0;
// Server is up and waiting (i.e. "blocked" or paused)
// Loop, infinitely, waiting for client connections.
// Stop the program somewhere else.
while (true) {
// block until connected to a client
try ( Socket clientConnectionSocket = serverSocket.accept()) {
serverLoopCount++; // increment at beginning of loop for reliability
// Now hook everything up (i.e. set up the streams), Java style:
os = clientConnectionSocket.getOutputStream();
ps = new PrintStream(os);
if (serverLoopCount <= 20) { // checking if the loop count <= 20
ps.println("This is response " + serverLoopCount + " produced by the server."); // this gets sent back to client!
} else {
ps.println("this is good bye message from the server"); // termination after 20 messages
break; // Stop server
}
// Print some information locally about the Socket connection.
// This includes the port and IP numbers on both sides (the socket pair).
localAddress = clientConnectionSocket.getLocalAddress();
remoteAddress = clientConnectionSocket.getInetAddress();
localPort = clientConnectionSocket.getLocalPort();
remotePort = clientConnectionSocket.getPort();
System.out.print("Server loop " + serverLoopCount + ": ");
// 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(FrankTCPExample3Server.class.getName() + " socket pair showing host name, address, port:");
System.out.println(" (( "
+ localAddress.getHostName() + "=" + localAddress.getHostAddress() + ", " + localPort + " ), ( "
+ remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
if (localAddress.getHostName().equals(localAddress.getHostAddress())
|| remoteAddress.getHostName().equals(remoteAddress.getHostAddress())) {
System.out.println(" note HostName matches address if host has no DNS name");
}
// Not/*i*/ce 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 " + FrankTCPExample3Server.class.getName() + " 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!");
}
}
}
}
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment