int main(int _argc, char *_argv[]) {
/*
Frame f(69, 'A');
cout << f.isValid() << endl;
cout << f.getFrameNumber() << endl;
cout << f.getData() << endl;
*/
/*
Byte* packet = f.serialize();
Frame a;
a.unserialize(packet);
cout << a.isValid() << endl;
cout << a.getFrameNumber() << endl;
cout << a.getData() << endl;
*/
Ack a(4, 69);
cout << a.isValid() << endl;
cout << a.getFrameNumber() << endl;
cout << a.getAck() << endl;
Byte * b = a.serialize();
Ack c;
c.unserialize(b);
cout << c.isValid() << endl;
cout << c.getFrameNumber() << endl;
cout << c.getAck() << endl;
return 0;
}
void* childProcessACK(void *threadid) {
// child process
// receive ACK/NAK from receiver
struct sockaddr_in srcAddr;
socklen_t srcLen;
printf("masuk thread\n");
char* serializedAck;
while (isSocketOpen) {
printf("proses\n");
if (recvfrom(sockfd, serializedAck, 4, 0, (struct sockaddr *) &srcAddr, &srcLen) != sizeof(Ack))
error("ERROR: recvfrom() receive buffer with size more than expected.\n");
Ack *ack = new Ack(serializedAck);
int i=0;
while (i<WINSIZE) {
if (window.getFrameBuffer().getElement((window.getFrameBuffer().getHead()+i)%WINSIZE).getNo() == ack->getFrameNo())
break;
else
i++;
}
if (ack->getAck()==ACK) {
printf("Received ACK for Frame No: %d\n",ack->getFrameNo());
window.setAckTrue((window.getFrameBuffer().getHead()+i)%WINSIZE);
received++;
} else if (ack->getAck()==NAK) {
printf("Received NAK for Frame No: %d\n",ack->getFrameNo());
if (sendto(sockfd, window.getFrameBuffer().getElement(i).getSerialized(), window.getFrameBuffer().getElement(i).getSize(), 0, (const struct sockaddr *) &receiverAddr, sizeof(receiverAddr)) != window.getFrameBuffer().getElement(i).getSize())
error("ERROR: sendto() sent buffer with size more than expected.\n");
printf("Sending frame no. %d: %s\n", window.getFrameBuffer().getElement(i).getNo(), window.getFrameBuffer().getElement(i).getData());
window.setTimeOut(i);
}
}
pthread_exit(NULL);
}