Program for Selective reapeat -Assignment No-05(Group A)
//................CLIENT SIDE (SELECTIVE REPEAT).............//
import java.lang.System;
import java.net.*;
import java.io.*;
import java.text.*;
import java.util.Random;
import java.util.*;
public class cli {
static Socket connection;
public static void main(String a[]) throws SocketException {
try {
int v[] = new int[10];
int n = 0;
Random rands = new Random();
int rand = 0;
InetAddress addr = InetAddress.getByName("Localhost");
System.out.println(addr);
connection = new Socket(addr, 8011);
DataOutputStream out = new DataOutputStream(
connection.getOutputStream());
DataInputStream in = new DataInputStream(
connection.getInputStream());
int p = in.read();
System.out.println("No of frame is:" + p);
for (int i = 0; i < p; i++) {
v[i] = in.read();
System.out.println(v[i]);
//g[i] = v[i];
}
rand = rands.nextInt(p);//FRAME NO. IS RANDOMLY
GENERATED
v[rand] = -1;
for (int i = 0; i < p; i++)
{
System.out.println("Received frame is: " +
v[i]);
}
for (int i = 0; i < p; i++)
if (v[i] == -1) {
System.out.println("Request to retransmit
from packet no "
+ (i+1) + " again!!");
n = i;
out.write(n);
out.flush();
}
System.out.println();
v[n] = in.read();
System.out.println("Received frame is: " + v[n]);
System.out.println("quiting");
} catch (Exception e) {
System.out.println(e);
}
}
}
/* OUTPUT
[root@localhost sinhgad]# java cli
Localhost/127.0.0.1
No of frame is:8
30
40
50
60
70
80
90
100
Received frame is: 30
Received frame is: 40
Received frame is: 50
Received frame is: -1
Received frame is: 70
Received frame is: 80
Received frame is: 90
Received frame is: 100
Request to retransmit from packet no 4 again!!
Received frame is: 60
quiting
*/
Server Side:
//.....................SERVER SIDE (SELECTIVE REPEAT)..........//
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
public class ser
{
static ServerSocket Serversocket;
static DataInputStream dis;
static DataOutputStream dos;
public static void main(String[] args) throws SocketException
{
try
{
int a[] = { 30, 40, 50, 60, 70, 80, 90, 100 };
Serversocket = new ServerSocket(8011);
System.out.println("waiting for connection");
Socket client = Serversocket.accept();
dis = new DataInputStream(client.getInputStream());
dos = new DataOutputStream(client.getOutputStream());
System.out.println("The number of packets sent is:" +
a.length);
int y = a.length;
dos.write(y);
dos.flush();
for (int i = 0; i < a.length; i++)
{
dos.write(a[i]);
dos.flush();
}
int k = dis.read();
dos.write(a[k]);
dos.flush();
}
catch (IOException e)
{
System.out.println(e);
}
finally
{
try
{
dis.close();
dos.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
/* OUTPUT
[sinhgad@localhost ~]$ su
Password:
[root@localhost sinhgad]# javac ser.java
[root@localhost sinhgad]# java ser
waiting for connection
The number of packets sent is:8
[root@localhost sinhgad]#
*/
Program:
import java.util.Scanner;
public class subnetmask {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
String ip = new String();
int mask=0,defaultmask=0;
System.out.println("enter ip address");
ip = scan.nextLine();
System.out.println("enter mask");
mask = scan.nextInt();
String[] splitip = ip.split("\\.");
System.out.println(splitip[0]+" "+splitip[1]+" "+splitip[2]+" "+splitip[3]+" ");
int first = Integer.parseInt(splitip[0]);
if(first>=0&&first<=127){
System.out.println("CLASS A");
defaultmask = 8;
}
else if(first>127&&first<=191){
System.out.println("CLASS B");
defaultmask=16;
}
else if(first>191&&first<=223){
System.out.println("CLASS C");
defaultmask=24;
}
else if(first>223){
System.out.println("CLASS D");
defaultmask=32;
}
String binip = new String();
String defmask = new String();
for(int i=0;i<4;i++){
binip = binip +
appendZeroes(Integer.toBinaryString(Integer.parseInt(splitip[i])));
}
System.out.println("IP in binary : "+binip);
System.out.println("Default Mask : "+defaultmask);
for(int i=0;i<32;i++){
if(i<mask){
defmask = defmask + "1";
}
else{
defmask = defmask + "0";
}
}
System.out.println(defmask);
String netid = new String();
for(int i=0;i<32;i++){
netid = netid +
(Integer.parseInt(""+binip.charAt(i))&Integer.parseInt(""+defmask.charAt(i)));
}
int p=-1;
System.out.println(netid);
String[] net = new String[4];
String[] def = new String[4];
for(int i=0;i<32;i++){
if(i%8==0){
p++;
net[p] = "";
def[p]="";
net[p] = net[p] + netid.charAt(i);
def[p] = def[p] + defmask.charAt(i);
}
else{
net[p] = net[p] + netid.charAt(i);
def[p] = def[p] + defmask.charAt(i);
}
}
System.out.println("Given IP : "+ip);
System.out.print("subnet mask :");
for(int i=0;i<4;i++){
System.out.print(Integer.parseInt(def[i],2));
if(i!=3)
System.out.print(".");
}
System.out.println();
System.out.print("NetId : ");
for(int i=0;i<4;i++){
System.out.print(Integer.parseInt(net[i],2));
if(i!=3)
System.out.print(".");
}
}
private static String appendZeroes(String binaryString) {
// TODO Auto-generated method stub
/*if(binaryString.length()<8){
for(int i=0;i<8-binaryString.length();i++){
binaryString = "0" + binaryString;
}
}*/
String temp = new String("00000000");
return temp.substring(binaryString.length())+ binaryString;
}
}
Output:
java -cp /tmp/Y7iGysNwAS subnetmask
enter ip address192.168.1.101
enter mask
255
192 168 1 101
CLASS C
IP in binary : 11000000101010000000000101100101
Default Mask :
241111111111111111111111111111111111000000101010000000000101100101
Given IP : 192.168.1.101
subnet mask :255.255.255.255
NetId : 192.168.1.101
#include <iostream>
#include<fstream>
#include <iomanip>
#include<string>
using namespace std;
int main() {
cout << "***** PACKET ANALYZER *****" << endl; // prints !!!Hello World!!!
string value, sr_no,time,source,destination,info,protocol,len;
int count=-1,i=0;
int choice;
do
{
ifstream file("data.csv");
//Reinitialize Counters
count=-1;
i=0;
cout<<"\nEnter which protocol packets you want to see"<<endl;
cout<<"1.IP\n2.UDP\n3.TCP\n4.Ethernet\n0Exit!!!\nChoice:"<<endl;
cin>>choice;
string protocolChoice; //sting to hold user packet choice
switch(choice){
case 1: protocolChoice="ICMPv6";
break;
case 2: protocolChoice="UDP";
break;
case 3: protocolChoice="TCP";
break;
case 4: protocolChoice="ARP";
break;
default: protocolChoice="ARP";
break;
}
while(file.good()) //LOOP UNTIL FILE HAS CONTENT
{
getline(file,sr_no,','); //GET STRING TILL ,
getline(file,time,',');
getline(file,source,',');
getline(file,destination,',');
getline(file,protocol,',');
getline(file,len,',');
getline(file,info,'\n');
protocol=string(protocol,1,protocol.length()-2);
if(protocol=="Protocol"||protocol==protocolChoice)
{
cout <<setw(4)<<left<<i++;
cout <<setw(12)<<left<< string( time, 1, time.length()-2 );
cout << setw(30)<<left<<string( source, 1, source.length()-2 );
cout << setw(30)<<left<<string( destination, 1, destination.length()-2
);
cout <<setw(8)<<left<<protocol;
cout <<setw(8)<<left<< string( len, 1, len.length()-2 );
cout << string( info, 1, info.length()-2 )<<"\n";
count++;
}
}
file.close();
cout<<"\nTotal Packet Count: "<<count;
}while(choice!=0);
return 0;
}
/* output:
* ***** PACKET ANALYZER *****
Enter which protocol packets you want to see
1.IP
2.UDP
3.TCP
4.Ethernet
0Exit!!!
Choice:
1
0 Time Source Destination ProtocolLength Info
1 0.000000000 fe80::f68e:38ff:fe87:a57e ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from f4:8e:38:87:a5:7e
2 0.151808000 fe80::175:6553:3c34:d4f0 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from c8:1f:66:06:4a:84
3 0.245234000 fe80::208:a1ff:fe43:c3c2 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 00:08:a1:43:c3:c2
4 0.301527000 fe80::4046:d001:d60a:e934 ff02::1:ff00:1 ICMPv6 86
Neighbor Solicitation for fe80::1 from 00:25:64:92:4d:81
5 0.310878000 fe80::80a7:7d55:7ecf:5582 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 34:17:eb:9e:8e:45
6 0.382715000 fe80::104b:adee:75e6:c425 ff02::1:ff2f:e430 ICMPv6 86
Neighbor Solicitation for fe80::a490:6a6c:d52f:e430 from 00:19:d1:45:e9:4b
7 0.486747000 fe80::8e2:220e:db99:187f ff02::2 ICMPv6 70 Router
Solicitation from c8:e0:eb:9e:44:9e
8 0.619047000 fe80::adb7:4c35:7a64:621e ff02::1:ff18:d425 ICMPv6 86
Neighbor Solicitation for fe80::899f:4a1b:518:d425 from b8:ac:6f:68:65:68
9 0.621767000 fe80::25e2:1c6e:545d:d5ca ff02::1:ff00:1 ICMPv6 86
Neighbor Solicitation for fe80::1 from f0:4d:a2:fd:b3:b3
10 0.879948000 fe80::6600:6aff:fe37:40d9 ff02::1:ff02:22f ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:22f from 64:00:6a:37:40:d9
11 0.943252000 fe80::4a4d:7eff:fec6:fe57 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 48:4d:7e:c6:fe:57
12 0.973236000 fe80::ad92:4946:c11e:bff0 ff02::1:ff00:1 ICMPv6 86
Neighbor Solicitation for fe80::1 from f4:8e:38:9d:86:5c
13 1.001717000 fe80::f68e:38ff:fe87:a57e ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from f4:8e:38:87:a5:7e
14 1.158015000 fe80::175:6553:3c34:d4f0 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from c8:1f:66:06:4a:84
15 1.164756000 fe80::90c7:9c8e:4162:743a ff02::16 ICMPv6 110
Multicast Listener Report Message v2
16 1.247232000 fe80::208:a1ff:fe43:c3c2 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 00:08:a1:43:c3:c2
17 1.299874000 fe80::4046:d001:d60a:e934 ff02::1:ff00:1 ICMPv6 86
Neighbor Solicitation for fe80::1 from 00:25:64:92:4d:81
18 1.334884000 fe80::80a7:7d55:7ecf:5582 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 34:17:eb:9e:8e:45
19 1.381157000 fe80::104b:adee:75e6:c425 ff02::1:ff2f:e430 ICMPv6 86
Neighbor Solicitation for fe80::a490:6a6c:d52f:e430 from 00:19:d1:45:e9:4b
20 1.410771000 fe80::adb7:4c35:7a64:621e ff02::1:ff11:4e6f ICMPv6 86
Neighbor Solicitation for fe80::5058:2741:6f11:4e6f from b8:ac:6f:68:65:68
21 1.422139000 fe80::ec3b:be3b:a1cf:b8dc ff02::1:ff64:621e ICMPv6 86
Neighbor Solicitation for fe80::adb7:4c35:7a64:621e from 28:d2:44:f6:d0:71
22 1.464011000 fe80::c2c9:76ff:fe50:72f9 ff02::2 ICMPv6 70 Router
Solicitation from c0:c9:76:50:72:f9
23 1.472534000 fe80::adb7:4c35:7a64:621e ff02::1:ff1c:b39b ICMPv6 86
Neighbor Solicitation for fe80::d107:c499:311c:b39b from b8:ac:6f:68:65:68
24 1.502391000 fe80::4a4d:7eff:feca:8004 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 48:4d:7e:ca:80:04
25 1.614264000 fe80::4a4d:7eff:fec6:ff33 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 48:4d:7e:c6:ff:33
26 1.639345000 fe80::221:9bff:fe6e:4b01 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from 00:21:9b:6e:4b:01
27 1.880789000 fe80::6600:6aff:fe37:40d9 ff02::1:ff02:22f ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:22f from 64:00:6a:37:40:d9
28 1.998620000 fe80::adb7:4c35:7a64:621e ff02::1:ffa7:7fb2 ICMPv6 86
Neighbor Solicitation for fe80::a1fb:332b:83a7:7fb2 from b8:ac:6f:68:65:68
29 2.003773000 fe80::f68e:38ff:fe87:a57e ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from f4:8e:38:87:a5:7e
30 2.028027000 fe80::e298:61ff:fe35:9a26 ff02::1:ff64:621e ICMPv6 86
Neighbor Solicitation for fe80::adb7:4c35:7a64:621e from e0:98:61:35:9a:26
31 2.040149000 fe80::f68e:38ff:fe87:a56a ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from f4:8e:38:87:a5:6a
32 2.107577000 fe80::b283:feff:fe4d:f1c9 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from b0:83:fe:4d:f1:c9
33 2.162415000 fe80::90c7:9c8e:4162:743a ff02::16 ICMPv6 110
Multicast Listener Report Message v2
34 2.181982000 fe80::175:6553:3c34:d4f0 ff02::1:ff02:21a ICMPv6 86
Neighbor Solicitation for fe80::726d:ecff:fe02:21a from c8:1f:66:06:4a:84
Total Packet Count: 34
Enter which protocol packets you want to see
1.IP
2.UDP
3.TCP
4.Ethernet
0Exit!!!
Choice:
2
0 Time Source Destination ProtocolLength Info
Total Packet Count: 0
Enter which protocol packets you want to see
1.IP
2.UDP
3.TCP
4.Ethernet
0Exit!!!
Choice:
3
0 Time Source Destination ProtocolLength Info
1 0.243260000 216.58.197.68 10.10.14.151 TCP 66 https > 51709
[FIN, ACK] Seq=1 Ack=1 Win=175 Len=0 TSval=2559300079 TSecr=23747257
2 0.438095000 108.168.177.14 10.10.13.238 TCP 103 [TCP
segment of a reassembled PDU]
3 0.746828000 192.168.16.254 10.10.10.28 TCP 60 57777 > etftp
[RST] Seq=1 Win=5840 Len=0
4 0.855756000 64.233.188.188 10.10.15.48 TCP 97 hpvroom >
39687 [PSH, ACK] Seq=1 Ack=1 Win=175 Len=31 TSval=2933171628 TSecr=49981356
5 1.839024000 118.214.135.85 10.10.12.0 TCP 60 https > 50976
[FIN, ACK] Seq=32 Ack=1 Win=980 Len=0
6 1.839028000 118.214.135.85 10.10.12.0 TCP 60 https > 50977
[FIN, ACK] Seq=32 Ack=1 Win=980 Len=0
7 1.886438000 192.168.3.254 192.168.3.211 TCP 62 ndl-aas >
fnet-remote-ui [SYN, ACK] Seq=0 Ack=1 Win=29200 Len=0 MSS=1460 SACK_PERM=1
8 1.888346000 192.168.3.254 192.168.3.211 TCP 60 ndl-aas >
fnet-remote-ui [ACK] Seq=1 Ack=211 Win=30016 Len=0
Total Packet Count: 8
*/
*/
import java.io.*;
import java.net.*;
public class ClientCode
{
Socket socket;
BufferedReader sock_in,kdb_in;
PrintWriter sock_out;
String str;
public ClientCode()
{
try{
Socket socket=new Socket("127.0.0.1",8080);
kdb_in=new BufferedReader(new InputStreamReader(System.in));
sock_in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
sock_out=new PrintWriter(socket.getOutputStream());
while(true)
{
System.out.println("Enter the msg");
str=kdb_in.readLine();
sock_out.println(str);
sock_out.flush();
System.out.println("Msg from Server");
str=sock_in.readLine();
System.out.println(str);
if(str.equals("bye"))
break;
}
//socket.close();
}catch (Exception e) { }
}
public static void main(String arg[])
{
new ClientCode();
}
}
/* OUTPUT
Enter the msg
hiiii
Msg from Server
hii,welcome to svit
Enter the msg
what r u doing?
Msg from Server
nothing
Enter the msg
ok bye
Msg from Server
bye
/import java.net.*;
import java.util.*;
public class IPDemo
{
public static void main(String[] args){
String host;
Scanner ch = new Scanner(System.in);
System.out.print("1.Enter Host Name \n2.Enter IP address \nChoice=");
int choice = ch.nextInt();
if(choice==1)
{
Scanner input = new Scanner(System.in);
System.out.print("\n Enter host name: ");
host = input.nextLine();
try {
InetAddress address = InetAddress.getByName(host);
System.out.println("IP address: " + address.getHostAddress());
System.out.println("Host name : " + address.getHostName());
System.out.println("Host name and IP address: " + address.toString());
}
catch (UnknownHostException ex) {
System.out.println("Could not find " + host);
}
}
else
{
Scanner input = new Scanner(System.in);
System.out.print("\n Enter IP address: ");
host = input.nextLine();
try {
InetAddress address = InetAddress.getByName(host);
System.out.println("Host name : " + address.getHostName());
System.out.println("IP address: " + address.getHostAddress());
System.out.println("Host name and IP address: " + address.toString());
}
catch (UnknownHostException ex) {
System.out.println("Could not find " + host);
}
}
}
}
/*OUTPUT
1.Enter Host Name
2.Enter IP address
Choice=1
Enter host name: www.google.com
IP address: 172.217.160.196
Host name: www.google.com
Host name and IP address: www.google.com/172.217.160.196
iotlab@iotlab-Veriton-M200-B360: ~$ java IPDemo
1.Enter Host Name
2.Enter IP address
Choice=2
Enter IP address: 8.8.8.8
Host name: dns.google
IP address: 8.8.8.8
Host name and IP address: dns.google/8.8.8.8
*/
