fixed transmitter receiver

Author: harryawk

src/receiver.cpp

@@ -215,7 +215,7 @@ static int rcvframe(QTYPE *q){
 sendto(sockfd, &sendxonxoff, 1, 0, (struct sockaddr*)&cli_addr, clilen);
 }
 }
-else if (M.fi > -100){ //masih ada yang dibenerin
+else if (M.fi > -100 && M.fi < 0){ //masih ada yang dibenerin
 sendNAK(M.fi * -1 - 1);
 }
 else{
@@ -334,8 +334,7 @@ void *childProcess(void *threadid){
 sendNAK(rxq->front);
 }
 }
-
-sleep(1);
+usleep(400000);
 }
 pthread_exit(NULL);
 }

src/transmitter.cpp

@@ -103,7 +103,7 @@ int main(int argc, char *argv[]){
 usleep(200000);
 }
 else{ // !xoff or NAKnum != -1
-if(NAKnum == -1) NAKnum = (lastacked + 1) % NAKnum;
+if(NAKnum == -1) NAKnum = (lastacked + 1) % RXQSIZE;
 mesg.msgno = NAKnum;
 mesg.data = cc[NAKnum % RXQSIZE];
 string s = convMESGBtostr(mesg);
@@ -113,9 +113,9 @@ int main(int argc, char *argv[]){
 c_sendto[i] = s[i];
 }
 
-printf("Mengirim NAK ke-%d: \'%s\' \n", NAKnum, cc[NAKnum]);
+printf("Mengirim frame dengan no NAK %d: \'%s\' \n", NAKnum, cc[NAKnum]);
 sendto(sockfd, c_sendto, sizeof(c_sendto), 0, (struct sockaddr*)&serv_addr, serv_len);
-usleep(200000);
+usleep(2000000);
 NAKnum = -1;
 }
 }