Here's a simple Go-Back-N ARQ implementation using C socket programming to simulate communication between a client (sender) and a server (receiver). Overview: Go-Back-N ARQ allows the sender to send multiple packets (window size) without waiting for individual ACKs. If a packet is lost or an ACK is not received, all packets starting from the lost packet are retransmitted. The server randomly simulates ACK loss or successful reception. Program Structure: Server : Simulates ACK reception with a chance of ACK loss, acknowledging packets up to the first lost packet. Client : Sends packets in a sliding window fashion, retransmitting the entire window if an ACK is lost. Server - Receiver #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <arpa/inet.h> #include <time.h> #define PORT 8080 #define BUFFER_SIZE 1024 #define LOSS_PROBABILITY 30 // 30% chance of ACK loss int main() { int server_fd, new_soc...
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