added Assignment 5 q 1

Author: jake1412

Socket-Programming/.idea/workspace.xml

@@ -0,0 +1,80 @@
+// Java program to illustrate Client side
+// Implementation using DatagramSocket
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.util.Scanner;
+
+public class udpBaseClient_2
+{
+    public static void main(String args[]) throws IOException
+    {
+        // Setting maximum data length
+        int MAX = 100;
+        Scanner sc = new Scanner(System.in);
+
+        // Step 1:Create the socket object for
+        // carrying the data.
+        DatagramSocket ds = new DatagramSocket();
+
+        InetAddress ip = InetAddress.getLocalHost();
+        byte buf[] = null;
+
+        int i, l, sum = 0, nob;
+        System.out.print("Enter data length : ");
+        l = sc.nextInt();
+
+        // Array to hold the data being entered
+        int data[] = new int[MAX];
+
+        // Array to hold the complement of each data
+        int c_data[] = new int[MAX];
+
+        System.out.println("Enter data to send : ");
+
+        for (i = 0; i < l; i++)
+        {
+            data[i] = sc.nextInt();
+
+            // Complementing the entered data
+            // Here we find the number of bits required to represent
+            // the data, like say 8 requires 1000, i.e 4 bits
+            nob = (int)(Math.floor(Math.log(data[i]) / Math.log(2))) + 1;
+
+            // Here we do a XOR of the data with the number 2^n -1,
+            // where n is the nob calculated in previous step
+            c_data[i] = ((1 << nob) - 1) ^ data[i];
+
+            // Adding the complemented data and storing in sum
+            sum += c_data[i];
+        }
+        // The sum(i.e checksum) is also sent along with the data
+        data[i] = sum;
+        l += 1;
+
+        System.out.println("Checksum Calculated is : " + sum);
+        System.out.println("Data being sent along with Checksum...");
+
+        // Sends the data length to receiver
+        // convert the input into the byte array.
+        String temp = Integer.toString(l);
+        buf = temp.getBytes();
+
+        // Step 2 : Create the datagramPacket for sending
+        // the data.
+        DatagramPacket DpSend = new DatagramPacket(buf, buf.length, ip, 1234);
+
+        // Step 3 : invoke the send call to actually send
+        // the data.
+        ds.send(DpSend);
+
+        // Sends the data one by one to receiver
+        for (int j = 0; j < l; j++){
+            temp = Integer.toString(data[j]);
+            buf = temp.getBytes();
+            DpSend = new DatagramPacket(buf, buf.length, ip, 1234);
+            ds.send(DpSend);
+        }
+    }
+}