diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Fetterolf/wiresharkproof.csv b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Fetterolf/wiresharkproof.csv
new file mode 100644
index 0000000000000000000000000000000000000000..f6e1dae61f5c6d7ac7e5b66aa02ae8a4ca12a66b
--- /dev/null
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Fetterolf/wiresharkproof.csv
@@ -0,0 +1,86 @@
+No.,Time,Source,Destination,Protocol,Length,Info
+1,0,172.20.154.253,239.255.255.250,IGMPv2,46,Membership Report group 239.255.255.250
+2,4.494902,172.20.154.253,224.0.0.252,IGMPv2,46,Membership Report group 224.0.0.252
+3,8.494797,172.20.154.253,224.0.0.251,IGMPv2,46,Membership Report group 224.0.0.251
+4,13.99937,172.20.154.253,224.0.0.251,IGMPv2,46,Membership Report group 224.0.0.251
+5,15.994927,172.20.154.253,224.0.0.252,IGMPv2,46,Membership Report group 224.0.0.252
+6,25.531061,::1,::1,TCP,86,51554 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+7,25.531136,::1,::1,TCP,86,"2317 > 51554 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+8,25.531175,::1,::1,TCP,74,51554 > 2317 [ACK] Seq=1 Ack=1 Win=2618880 Len=0
+9,25.532262,::1,::1,TCP,87,"2317 > 51554 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=13"
+10,25.532282,::1,::1,TCP,74,51554 > 2317 [ACK] Seq=1 Ack=14 Win=2618880 Len=0
+11,25.532322,::1,::1,TCP,76,"2317 > 51554 [PSH, ACK] Seq=14 Ack=1 Win=2618880 Len=2"
+12,25.532331,::1,::1,TCP,74,51554 > 2317 [ACK] Seq=1 Ack=16 Win=2618880 Len=0
+13,25.533723,::1,::1,TCP,86,51555 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+14,25.533789,::1,::1,TCP,74,"2317 > 51554 [FIN, ACK] Seq=16 Ack=1 Win=2618880 Len=0"
+15,25.533794,::1,::1,TCP,86,"2317 > 51555 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+16,25.533856,::1,::1,TCP,74,51554 > 2317 [ACK] Seq=1 Ack=17 Win=2618880 Len=0
+17,25.533863,::1,::1,TCP,74,51555 > 2317 [ACK] Seq=1 Ack=1 Win=327168 Len=0
+18,25.53414,::1,::1,TCP,88,"2317 > 51555 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=14"
+19,25.534158,::1,::1,TCP,74,51555 > 2317 [ACK] Seq=1 Ack=15 Win=327168 Len=0
+20,25.534184,::1,::1,TCP,76,"2317 > 51555 [PSH, ACK] Seq=15 Ack=1 Win=2618880 Len=2"
+21,25.534194,::1,::1,TCP,74,51555 > 2317 [ACK] Seq=1 Ack=17 Win=327168 Len=0
+22,25.534318,::1,::1,TCP,74,"2317 > 51555 [FIN, ACK] Seq=17 Ack=1 Win=2618880 Len=0"
+23,25.534336,::1,::1,TCP,74,51555 > 2317 [ACK] Seq=1 Ack=18 Win=327168 Len=0
+24,25.534912,::1,::1,TCP,86,51556 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+25,25.534994,::1,::1,TCP,86,"2317 > 51556 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+26,25.535033,::1,::1,TCP,74,51556 > 2317 [ACK] Seq=1 Ack=1 Win=2618880 Len=0
+27,25.535278,::1,::1,TCP,93,"2317 > 51556 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=19"
+28,25.535304,::1,::1,TCP,74,51556 > 2317 [ACK] Seq=1 Ack=20 Win=2618880 Len=0
+29,25.535344,::1,::1,TCP,76,"2317 > 51556 [PSH, ACK] Seq=20 Ack=1 Win=2618880 Len=2"
+30,25.535357,::1,::1,TCP,74,51556 > 2317 [ACK] Seq=1 Ack=22 Win=2618880 Len=0
+31,25.535502,::1,::1,TCP,74,"2317 > 51556 [FIN, ACK] Seq=22 Ack=1 Win=2618880 Len=0"
+32,25.535517,::1,::1,TCP,74,51556 > 2317 [ACK] Seq=1 Ack=23 Win=2618880 Len=0
+33,25.536018,::1,::1,TCP,86,51557 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+34,25.53607,::1,::1,TCP,86,"2317 > 51557 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+35,25.536106,::1,::1,TCP,74,51557 > 2317 [ACK] Seq=1 Ack=1 Win=327168 Len=0
+36,25.536311,::1,::1,TCP,81,"2317 > 51557 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=7"
+37,25.536333,::1,::1,TCP,74,51557 > 2317 [ACK] Seq=1 Ack=8 Win=327168 Len=0
+38,25.536374,::1,::1,TCP,76,"2317 > 51557 [PSH, ACK] Seq=8 Ack=1 Win=2618880 Len=2"
+39,25.536389,::1,::1,TCP,74,51557 > 2317 [ACK] Seq=1 Ack=10 Win=327168 Len=0
+40,25.536546,::1,::1,TCP,74,"2317 > 51557 [FIN, ACK] Seq=10 Ack=1 Win=2618880 Len=0"
+41,25.536563,::1,::1,TCP,74,51557 > 2317 [ACK] Seq=1 Ack=11 Win=327168 Len=0
+42,25.540671,::1,::1,TCP,74,"51557 > 2317 [RST, ACK] Seq=1 Ack=11 Win=0 Len=0"
+43,25.540928,::1,::1,TCP,74,"51554 > 2317 [RST, ACK] Seq=1 Ack=17 Win=0 Len=0"
+44,25.54098,::1,::1,TCP,74,"51555 > 2317 [RST, ACK] Seq=1 Ack=18 Win=0 Len=0"
+45,25.541016,::1,::1,TCP,74,"51556 > 2317 [RST, ACK] Seq=1 Ack=23 Win=0 Len=0"
+56,38.295834,::1,::1,TCP,86,51563 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+57,38.295874,::1,::1,TCP,86,"2317 > 51563 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+58,38.29594,::1,::1,TCP,74,51563 > 2317 [ACK] Seq=1 Ack=1 Win=2618880 Len=0
+59,38.296716,::1,::1,TCP,87,"2317 > 51563 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=13"
+60,38.296732,::1,::1,TCP,74,51563 > 2317 [ACK] Seq=1 Ack=14 Win=2618880 Len=0
+61,38.296788,::1,::1,TCP,76,"2317 > 51563 [PSH, ACK] Seq=14 Ack=1 Win=2618880 Len=2"
+62,38.296799,::1,::1,TCP,74,51563 > 2317 [ACK] Seq=1 Ack=16 Win=2618880 Len=0
+63,38.297568,::1,::1,TCP,86,51564 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+64,38.297623,::1,::1,TCP,86,"2317 > 51564 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+65,38.297667,::1,::1,TCP,74,"2317 > 51563 [FIN, ACK] Seq=16 Ack=1 Win=2618880 Len=0"
+66,38.297672,::1,::1,TCP,74,51564 > 2317 [ACK] Seq=1 Ack=1 Win=2618880 Len=0
+67,38.297712,::1,::1,TCP,74,51563 > 2317 [ACK] Seq=1 Ack=17 Win=2618880 Len=0
+68,38.297926,::1,::1,TCP,88,"2317 > 51564 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=14"
+69,38.297942,::1,::1,TCP,74,51564 > 2317 [ACK] Seq=1 Ack=15 Win=2618880 Len=0
+70,38.297967,::1,::1,TCP,76,"2317 > 51564 [PSH, ACK] Seq=15 Ack=1 Win=2618880 Len=2"
+71,38.297976,::1,::1,TCP,74,51564 > 2317 [ACK] Seq=1 Ack=17 Win=2618880 Len=0
+72,38.298085,::1,::1,TCP,74,"2317 > 51564 [FIN, ACK] Seq=17 Ack=1 Win=2618880 Len=0"
+73,38.2981,::1,::1,TCP,74,51564 > 2317 [ACK] Seq=1 Ack=18 Win=2618880 Len=0
+74,38.298642,::1,::1,TCP,86,51565 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+75,38.298697,::1,::1,TCP,86,"2317 > 51565 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+76,38.298719,::1,::1,TCP,74,51565 > 2317 [ACK] Seq=1 Ack=1 Win=327168 Len=0
+77,38.29896,::1,::1,TCP,93,"2317 > 51565 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=19"
+78,38.298978,::1,::1,TCP,74,51565 > 2317 [ACK] Seq=1 Ack=20 Win=327168 Len=0
+79,38.299006,::1,::1,TCP,76,"2317 > 51565 [PSH, ACK] Seq=20 Ack=1 Win=2618880 Len=2"
+80,38.299015,::1,::1,TCP,74,51565 > 2317 [ACK] Seq=1 Ack=22 Win=327168 Len=0
+81,38.299293,::1,::1,TCP,74,"2317 > 51565 [FIN, ACK] Seq=22 Ack=1 Win=2618880 Len=0"
+82,38.299313,::1,::1,TCP,74,51565 > 2317 [ACK] Seq=1 Ack=23 Win=327168 Len=0
+83,38.299545,::1,::1,TCP,86,51566 > 2317 [SYN] Seq=0 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1
+84,38.299594,::1,::1,TCP,86,"2317 > 51566 [SYN, ACK] Seq=0 Ack=1 Win=65535 Len=0 MSS=65475 WS=256 SACK_PERM=1"
+85,38.299633,::1,::1,TCP,74,51566 > 2317 [ACK] Seq=1 Ack=1 Win=2618880 Len=0
+86,38.299887,::1,::1,TCP,81,"2317 > 51566 [PSH, ACK] Seq=1 Ack=1 Win=2618880 Len=7"
+87,38.29991,::1,::1,TCP,74,51566 > 2317 [ACK] Seq=1 Ack=8 Win=2618880 Len=0
+88,38.299946,::1,::1,TCP,76,"2317 > 51566 [PSH, ACK] Seq=8 Ack=1 Win=2618880 Len=2"
+89,38.29996,::1,::1,TCP,74,51566 > 2317 [ACK] Seq=1 Ack=10 Win=2618880 Len=0
+90,38.300102,::1,::1,TCP,74,"2317 > 51566 [FIN, ACK] Seq=10 Ack=1 Win=2618880 Len=0"
+91,38.300119,::1,::1,TCP,74,51566 > 2317 [ACK] Seq=1 Ack=11 Win=2618880 Len=0
+92,38.30487,::1,::1,TCP,74,"51563 > 2317 [RST, ACK] Seq=1 Ack=17 Win=0 Len=0"
+93,38.304926,::1,::1,TCP,74,"51564 > 2317 [RST, ACK] Seq=1 Ack=18 Win=0 Len=0"
+94,38.304957,::1,::1,TCP,74,"51565 > 2317 [RST, ACK] Seq=1 Ack=23 Win=0 Len=0"
+95,38.304989,::1,::1,TCP,74,"51566 > 2317 [RST, ACK] Seq=1 Ack=11 Win=0 Len=0"
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannClient.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannClient.java
similarity index 94%
rename from assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannClient.java
rename to assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannClient.java
index f7d2c16c852479bd2b00ff703da586b19492f519..dad6563446742c8e1d3ca3f38c174c910eaa246f 100644
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannClient.java
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannClient.java
@@ -3,8 +3,9 @@
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
-package MV3500Cohort2019JulySeptember.homework2;
+package MV3500Cohort2019JulySeptember.homework2.McCann;
+import MV3500Cohort2019JulySeptember.homework2.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannHW2UML.pptx b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannHW2UML.pptx
new file mode 100644
index 0000000000000000000000000000000000000000..e54cf98d31a0847a548e01c28aa4cbc390c2148e
Binary files /dev/null and b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannHW2UML.pptx differ
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann Output.PNG b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannOutput.PNG
similarity index 100%
rename from assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann Output.PNG
rename to assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannOutput.PNG
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannServer.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannServer.java
similarity index 91%
rename from assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannServer.java
rename to assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannServer.java
index a2e06119396cb305302b527b8efae31e88007eac..208095fa2edf1790d004ba90acd62e1917ed75b3 100644
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCannServer.java
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannServer.java
@@ -3,8 +3,9 @@
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
-package MV3500Cohort2019JulySeptember.homework2;
+package MV3500Cohort2019JulySeptember.homework2.McCann;
+import MV3500Cohort2019JulySeptember.homework2.*;
import java.io.*;
import java.net.*;
import java.util.Scanner;
@@ -35,13 +36,14 @@ public class McCannServer {
while (true) {
// block until connected to a client
- try (Socket clientConnection = serverSocket.accept()) {
+ try (Socket clientConnection = serverSocket.accept()) {
// Now hook everything up (i.e. set up the streams), Java style:
os = clientConnection.getOutputStream();
ps = new PrintStream(os);
Scanner keyboard = new Scanner(System.in);
ps.println("What is your name?"); // this gets sent back to client!
+ //tried to add an input but couldn't get it to work
//String message = keyboard.nextLine();
// ps.println(message);
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann_ServerOutput.PNG b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannServerOutput.PNG
similarity index 100%
rename from assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann_ServerOutput.PNG
rename to assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannServerOutput.PNG
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann_WireShark_output.PNG b/assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannWireSharkOutput.PNG
similarity index 100%
rename from assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann_WireShark_output.PNG
rename to assignments/src/MV3500Cohort2019JulySeptember/homework2/McCann/McCannWireSharkOutput.PNG
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.java
index 21af2d3830d6cd04bd1e255477f5034d414fae3a..4d39e6900fc4e61727c8a701ba777cecea5bd2a1 100644
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.java
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.java
@@ -4,19 +4,15 @@ 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.
+ * This is a client program that establishes a socket connection to a dispatch
+ * server, then it sends a simple math equation to be solved.
*
- * 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 Schutt
*/
public class SchuttClient {
// 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) {
@@ -28,17 +24,24 @@ public class SchuttClient {
OutputStream os;
PrintStream ps;
String serverMessage;
+ String[] equations = new String[4];
+
+ equations[0] = "1 + 1";
+ equations[1] = "2 + 2";
+ equations[2] = "2 * 2";
+ equations[3] = "3 * 3";
+ int index = 1;
try {
- while (true) {
- System.out.println("SchuttClient creating socket...");
+ for(String eq : equations) {
+ System.out.println("SchuttClient creating socket #" + index + "...");
// 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?
+ socket = new Socket("localhost", 2317); // locohost?
// Now hook everything up (i.e. set up the streams), Java style:
// ** Added an output stream to the client so it can send a message to the server
@@ -55,9 +58,13 @@ public class SchuttClient {
System.out.println("==================================================");
System.out.println("Now we're talking!");
System.out.println("The message the server sent was: '" + serverMessage + "'");
- ps.println("Who's there?"); // Sends a message to the server
// socket gets closed, either automatically/silently by this code (or possibly by the server)
+ ps.println(eq);
+ serverMessage = br.readLine();
+ System.out.println(serverMessage);
+ System.out.println("===================================================");
+ index++;
} // end while(true)
} catch (IOException e) {
System.err.println("Problem with SchuttServerClient networking:"); // describe what is happening
@@ -70,7 +77,7 @@ public class SchuttClient {
} finally {
// program exit: tell somebody about that
- System.out.println("\nclient exit");
+
}
}
}
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.png b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.png
deleted file mode 100644
index dfe10a33e9c5396116732731ab6da92b702599e4..0000000000000000000000000000000000000000
Binary files a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttClient.png and /dev/null differ
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServer.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServer.java
deleted file mode 100644
index e33440c56424fc1dc9acc5ec46431de09ae8cfb7..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServer.java
+++ /dev/null
@@ -1,99 +0,0 @@
-package MV3500Cohort2019JulySeptember.homework2.Schutt;
-
-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
- */
-public class SchuttServer {
-
- 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("SchuttServer has started..."); // it helps debugging to put this on console first
-
- ServerSocket serverSocket = new ServerSocket(2317);
- OutputStream os;
- PrintStream ps;
- InputStream is;
- InputStreamReader isr;
- BufferedReader br;
- String clientResponse;
- 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.
- while (true) {
-
- // block until connected to a client
- try (Socket clientConnection = serverSocket.accept()) {
-
- // Now hook everything up (i.e. set up the streams), Java style:
- // Added an input stream to gather the message sent from the client
- os = clientConnection.getOutputStream();
- is = clientConnection.getInputStream();
- isr = new InputStreamReader(is);
- br = new BufferedReader(isr);
- ps = new PrintStream(os);
-
- ps.println("Knock Knock!"); // this gets sent back to client!
-
- // Assigns the client message to a string
- clientResponse = br.readLine();
- // 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("SchuttServer socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( "
- + remoteAddress.toString() + ", " + remotePort + " ))");
- // Prints the message sent from the client
- System.out.println("++++++++++++++++++++++++++++++++++++");
- System.out.println("Client Response: " + clientResponse);
- System.out.println("====================================");
-
- // 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 SchuttServer 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/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServer.png b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServer.png
deleted file mode 100644
index 62aebd4d816b55a514a037bff36c384b65f5f833..0000000000000000000000000000000000000000
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diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServerDispatcher.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServerDispatcher.java
new file mode 100644
index 0000000000000000000000000000000000000000..1808be2820dacdde1592fd481bc9a07d1581ee3a
--- /dev/null
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttServerDispatcher.java
@@ -0,0 +1,56 @@
+package MV3500Cohort2019JulySeptember.homework2.Schutt;
+
+import java.io.IOException;
+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 Schutt
+ */
+public class SchuttServerDispatcher {
+
+ public static void main(String[] args) // execution starts here
+ {
+ try{
+ ServerSocket serverSocket = new ServerSocket(2317);
+ int connectionCount = 0;
+
+ System.out.println("SchuttServerDispatcher ready to accept socket connections...");
+
+ while(true){
+ Socket clientConnection = serverSocket.accept();
+ connectionCount++;
+ System.out.println("========================================================");
+ System.out.println("SchuttServerDispatcher.handlerThread invocation for connection #" + connectionCount + "...");
+ SchuttThreadHandler handlerThread = new SchuttThreadHandler(clientConnection);
+ handlerThread.start();
+ System.out.println("SchuttServerDispatcher.handlerThread is launched, awaiting next connection...");
+ }
+
+ } catch (IOException e){
+ System.out.println("Problem with SchuttServerDispatcher networking:");
+ System.out.println("Error: " + e);
+ if(e instanceof java.net.BindException){
+ System.out.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+
+ System.out.println("=============================================================");
+ }
+
+}
+
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttThreadHandler.java b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttThreadHandler.java
new file mode 100644
index 0000000000000000000000000000000000000000..651402c406da2c747f2054fd76f7d5fa8d7c5766
--- /dev/null
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttThreadHandler.java
@@ -0,0 +1,86 @@
+package MV3500Cohort2019JulySeptember.homework2.Schutt;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * A program that handles all logic associated with one socket connection by
+ * running in a thread of its own. This is the server portion as well, so we
+ * artificially invent what happens if the server can't respond to a connection
+ * for several seconds. Warning: do not run this class! It is created
+ * automatically by TcpExample4DispatchServer.
+ *
+ * @author Schutt
+ */
+public class SchuttThreadHandler extends Thread {
+
+ /**
+ * The socket connection to a client
+ */
+ Socket socket;
+ int num1;
+ int num2;
+ int output;
+
+ /**
+ * The thread constructor creates the socket from a ServerSocket, and passes
+ * one to the thread responsible for handling the connection.
+ *
+ * @param socket The socket connection handled by this thread
+ */
+ public SchuttThreadHandler(Socket socket) {
+ this.socket = socket;
+ }
+
+ /**
+ * Handles one connection. We add an artificial slowness to handling the
+ * connection with a sleep(). This means the client won't see a server
+ * connection response for ten seconds (default).
+ */
+ // @overriding run() method in Java Thread class is deliberate
+ @Override
+ public void run() {
+ try {
+ System.out.println("SchuttThreadHandler starting to handle a thread...");
+ // get the connection output stream, then wait a period of time.
+ OutputStream os = socket.getOutputStream();
+ PrintStream ps = new PrintStream(os);
+ InputStream is = socket.getInputStream();
+ InputStreamReader isr = new InputStreamReader(is);
+ BufferedReader br = new BufferedReader(isr);
+
+ ps.println("Please send your equation!");
+
+ String clientInput = br.readLine();
+ System.out.println("The Client's equation is: " + clientInput);
+ if(clientInput.contains("+")){
+
+ num1 = (int)clientInput.charAt(0);
+ num2 = (int)clientInput.charAt(4);
+ System.out.println(num1 + " " + num2);
+
+ output = num1 + num2;
+ }
+
+ if(clientInput.contains("*")){
+ num1 = (int)clientInput.charAt(0);
+ num2 = (int)clientInput.charAt(4);
+
+ output = num1 * num2;
+ }
+ System.out.println("The Client's answer is: " + output);
+ ps.println("The answer to your equation is: " + output);
+ ps.flush();
+ socket.close();
+
+ } catch (IOException e) // either a networking or a threading problem
+ {
+ System.out.println("Problem with TcpExample4HandlerThread networking:"); // describe what is happening
+ System.out.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.out.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttWireSharkClient.png b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttWireSharkClient.png
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diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttWireSharkServer.png b/assignments/src/MV3500Cohort2019JulySeptember/homework2/Schutt/SchuttWireSharkServer.png
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