diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java deleted file mode 100644 index a5ef04e793db41b04a9ffcaa0ea6419eb4594292..0000000000000000000000000000000000000000 --- a/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java +++ /dev/null @@ -1,95 +0,0 @@ -package MV3500Cohort2021JulySeptember.homework2; - -import java.io.*; -import java.net.*; - -/** - * Before, we always used telnet (netcat) 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 the loop iterates. - * - * @author mcgredo - * @author brutzman - */ -public class HittnerNickTcpExample3Client { - - /** IPv6 String constant for localhost address, similarly IPv4 127.0.0.1 - * @see <a href="https://en.wikipedia.org/wiki/localhost">https://en.wikipedia.org/wiki/localhost</a> - * @see <a href="https://en.wikipedia.org/wiki/IPv6_address">https://en.wikipedia.org/wiki/IPv6_address</a> - */ - 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 user can cancel execution - */ - 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(HittnerNickTcpExample3Client.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, 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("=================================================="); - - System.out.print ("Client loop " + clientLoopCount + ": "); - System.out.println("Good morning, Nick"); - System.out.println("The message the server sent was: '" + serverMessage + "'"); - // socket gets closed, either automatically/silently by this code (or possibly by the server) - - Thread.sleep(500l); // slow things down, for example 500l (long) = 500 msec (1/2 second) - - } // end while(true) // infinite loops are dangerous, be sure to kill this process! - } - catch (IOException e) - { - System.err.println("Problem with " + HittnerNickTcpExample3Client.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(HittnerNickTcpExample3Client.class.getName() + " exit"); - } - } -}