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2 changed files with 0 additions and 78 deletions

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#include <iostream>
#include <vector>
#include <queue>
using namespace std;
class SlidingWindow {
private:
int window_size;
int total_frames;
vector<int> sent_frames; // queue of sent frames
int next_frame_to_send; // index of the next frame to send
int next_frame_to_receive; // index of the next frame to receive
public:
SlidingWindow(int window_size, int total_frames) {
this->window_size = window_size;
this->total_frames = total_frames;
this->next_frame_to_send = 0;
this->next_frame_to_receive = 0;
}
// send a frame
void send_frame() {
if (sent_frames.size() < window_size && next_frame_to_send < total_frames) {
sent_frames.push_back(next_frame_to_send);
next_frame_to_send++;
cout<<"Sent frame "<<sent_frames.back()<<endl;
}
else {
cout<<"Window is full. Waiting before sending next frames."<<endl;
}
}
// receive a frame
void receive_frame(int frame_number) {
if (frame_number == next_frame_to_receive) {
next_frame_to_receive++;
cout<<"Received frame "<<frame_number<<endl;
}
else {
cout<<"Received frame "<<frame_number<<", but expected frame "<<next_frame_to_receive<<endl;
}
// remove acknowledged frames from the sent_frames queue
while (!sent_frames.empty() && sent_frames.front()<=next_frame_to_receive-1) {
sent_frames.erase(sent_frames.begin());
}
}
bool all_frames_sent() {
return next_frame_to_send == total_frames;
}
bool all_frames_received() {
return next_frame_to_receive == total_frames;
}
};
int main() {
int window_size, total_frames;
cout << "Enter the window size:\t";
cin >> window_size;
cout << "Enter the total number of frames:\t";
cin >> total_frames;
SlidingWindow window(window_size, total_frames);
while (!window.all_frames_sent() || !window.all_frames_received()) {
window.send_frame();
// simulate receiving frames
for (int i=0; i<rand()%3; i++) {
int frame_number = rand() % total_frames;
window.receive_frame(frame_number);
}
}
cout<<"All frames sent and received successfully!"<<endl;
return 0;
}

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