Simulate and implement selective repeat sliding window protocol in Computer Network -KML Tutorial

 Aim:- Simulate and implement selective repeat sliding window protocol.

Program:-

1. #include<stdio.h>
2. int main()
3. {
4.     int w,i,f,frames[50];
5.     printf("Enter window size: ");
6.     scanf("%d",&w);
7.     printf("\nEnter number of frames to transmit: ");
8.     scanf("%d",&f);
9.     printf("\nEnter %d frames: ",f);
10.     for(i=1;i<=f;i++)
11.         scanf("%d",&frames[i]);
12.     printf("\nWith sliding window protocol the frames will be sent in the following manner (assuming no corruption of frames)\n\n");
13.     printf("After sending %d frames at each stage sender waits for acknowledgment sent by the receiver\n\n",w);
14.     for(i=1;i<=f;i++)
15.     {
16.         if(i%w==0)
17.         {
18.             printf("%d\n",frames[i]);
19.             printf("Acknowledgment of above frames sent is received by sender\n\n");
20.         }
21.         else
22.             printf("%d ",frames[i]);
23.     }
24.     if(f%w!=0)
25.         printf("\nAcknowledgment of above frames sent is received by sender\n");
26.     return 0;
27. }

Outpute:-

Enter window size: 2

Enter number of frames to transmit: 3

Enter 3 frames: 1
2
3

With sliding window protocol the frames will be sent in the following manner (assuming no corruption of frames)

After sending 2 frames at each stage sender waits for acknowledgment sent by the receiver

1 2
Acknowledgment of above frames sent is received by sender

3
Acknowledgment of above frames sent is received by sender