diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Client.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/AllenTcpExample3Client.java
similarity index 83%
rename from assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Client.java
rename to assignments/src/MV3500Cohort2021JulySeptember/homework2/AllenTcpExample3Client.java
index 3ffc35822e0bc7acd21a856e8afb7d9e938bb992..2184a1be395895c4fc9da11d10e3129698c901b7 100644
--- a/assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Client.java
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/AllenTcpExample3Client.java
@@ -11,11 +11,9 @@ import java.net.*;
* 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
- * @author reynolds
+ * @author snapp
*/
-public class ReynoldsTcpExample3Client {
+public class AllenTcpExample3Client {
/** 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>
@@ -42,7 +40,7 @@ public class ReynoldsTcpExample3Client {
while (true)
{
clientLoopCount++; // increment at beginning of loop for reliability
- System.out.println(ReynoldsTcpExample3Client.class.getName() + " looking for an empire to join...");
+ System.out.println(AllenTcpExample3Client.class.getName() + " creating socket...");
// We request an IP to connect to ("localhost") and
// port number at that IP (2317). This establishes
@@ -61,10 +59,10 @@ public class ReynoldsTcpExample3Client {
// from the server instead of one only.
serverMessage = br.readLine();
System.out.println("==================================================");
-
- System.out.print ("Client # " + clientLoopCount + ": ");
- System.out.println("I've sided with the empire!");
- System.out.println("The the serverlord has spoken... it said: '" + serverMessage + "' \n" );
+ System.out.println("Sorry, my dog ate my homework.");
+ System.out.println("The AllenServer responds with: " + serverMessage + "'");
+ System.out.println("Yeah, it took him a few bytes! This this my " + clientLoopCount +" time trying to contact you.");
+
// 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
@@ -73,7 +71,7 @@ public class ReynoldsTcpExample3Client {
}
catch (IOException e)
{
- System.err.println("Problem with " + ReynoldsTcpExample3Client.class.getName() + " networking:"); // describe what is happening
+ System.err.println("Problem with " + AllenTcpExample3Client.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
@@ -90,7 +88,7 @@ public class ReynoldsTcpExample3Client {
// program exit: tell somebody about that happening. Likely cause: server drops connection.
System.out.println();
- System.out.println(ReynoldsTcpExample3Client.class.getName() + " exit");
+ System.out.println(AllenTcpExample3Client.class.getName() + " exit");
}
}
}
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankClient.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankClient.java
new file mode 100644
index 0000000000000000000000000000000000000000..7a47fc9139e04f668c57b2448f8f907fc511b538
--- /dev/null
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankClient.java
@@ -0,0 +1,99 @@
+package MV3500Cohort2021JulySeptember.homework2;
+
+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 FrankClient {
+
+ /**
+ */
+ 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 cancels 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( "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( clientLoopCount + ": ");
+ System.out.println("Hola!");
+ System.out.println("The message the server sent was: '" + serverMessage + "'");
+ int count = 0;
+ System.out.println("test");
+ count++;
+// socket gets closed, either automatically/silently by this code (or possibly by the server)
+ if (serverMessage.equals("this is good bye message from Franks 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 " + FrankClient.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("Good Bye!!!");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankServer.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankServer.java
new file mode 100644
index 0000000000000000000000000000000000000000..aafe9a4a2ee3a0126f26a4f906abf699ea2a5864
--- /dev/null
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankServer.java
@@ -0,0 +1,90 @@
+package MV3500Cohort2021JulySeptember.homework2;
+
+import java.io.*;
+import java.net.*;
+
+
+public class FrankServer {
+
+ /**
+ * 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
+ * @throws java.lang.InterruptedException user cancels execution
+ */
+ 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(FrankServer.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 <= 10) { // checking if the loop count <= 10
+ ps.println("How are you doing?"); // this gets sent back to client!
+ } else {
+ ps.println("this is good bye message from Franks 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(FrankServer.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 " + FrankServer.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!");
+ }
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankTcpExample3Client.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankTcpExample3Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..59842415433cd6df81d943477b2c6af87b316d61
--- /dev/null
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/FrankTcpExample3Client.java
@@ -0,0 +1,96 @@
+package MV3500Cohort2021JulySeptember.homework2;
+
+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 user cancels 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( "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( clientLoopCount + ": ");
+ System.out.println("Hola!");
+ 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 Franks 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("Good Bye!!!");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerDTcpExample3Client(2).java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerDTcpExample3Client(2).java
new file mode 100644
index 0000000000000000000000000000000000000000..8362c3a4632b267e47a6448faadd19c375c619a2
--- /dev/null
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerDTcpExample3Client(2).java
@@ -0,0 +1,87 @@
+package MV3500Cohort2021JulySeptember.homework2.HittnerD;
+import java.io.*;
+import java.net.*;
+
+/**
+ *
+ * @author Dom Hittner
+ */
+public class HittnerDTcpExample3Client {
+
+ /** 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(HittnerDTcpExample3Client.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("I am hungry");
+ 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 " + HittnerDTcpExample3Client.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(HittnerDTcpExample3Client.class.getName() + " exit");
+ }
+ }
+}
\ No newline at end of file
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..a5ef04e793db41b04a9ffcaa0ea6419eb4594292
--- /dev/null
+++ b/assignments/src/MV3500Cohort2021JulySeptember/homework2/HittnerNickTcpExample3Client.java
@@ -0,0 +1,95 @@
+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");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Server.java b/assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Server.java
deleted file mode 100644
index f56e658ebdb33b6c5d00f5ad7b3e96a16511ad10..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2021JulySeptember/homework2/ReynoldsTcpExample3Server.java
+++ /dev/null
@@ -1,104 +0,0 @@
-package MV3500Cohort2021JulySeptember.homework2;
-
-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 2317
- *
- * 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
- * @author reynolds
- */
-public class ReynoldsTcpExample3Server {
-
- /**
- * 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) {
- 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(ReynoldsTcpExample3Server.class.getName() + " has started hosting, looking for a new client to pad my empire..."); // it helps debugging to put this on console first
-
- ServerSocket serverSocket = new ServerSocket(2317);
- 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);
- ps.println("Thank you client " + serverLoopCount + ", you have added to my growing empire!"); // this gets sent back to client!
-
- // 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(ReynoldsTcpExample3Server.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");
-
- // 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 " + ReynoldsTcpExample3Server.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!");
- }
- }
- }
-}