我有一个简单的ipc程序。服务器生成一个随机数,并从stdin读取一些客户端。每个客户端都会向服务器发送随机数,直到他们猜到服务器的编号。当超过n/2个客户端猜测数量时,服务器停止。我的问题是服务器在第一个客户端猜到数字后停止。一台客户机停止后,Unix ipc服务器停止
服务器代码:
int i=0; // the number of clients who guessed the number
srand(getpid());
numarul = rand() % 20;
printf("Numarul generat este %d \n",numarul);
for(;;){
if(msgrcv(coadaId,&mesg,sizeof(Mesaj),1,0)<0) // read the mesage from queue
printf("Eroare la receptionarea mesajului.");
else{
printf("Am primit numarul %d \n", mesg.nr);
if(mesg.nr == numarul){
i++; // is the number is guessed
printf("S-a ghicit numarul de la %d clienti \n",i);
mesg.val=1;} // msg.val = 1 if number is guessed
mesg.tip=2; // change the message type
msgsnd(coadaId,&mesg,sizeof(Mesaj),0); // send the msg.val . if 1 client stops
mesg.val=0;
if(i>n/2)break; // the loop ends when i is bigger than half number of clients
}
}
客户端代码:
mesg1.val=0;
srand(getpid());
while(mesg1.val!=1){
mesg1.nr = rand() % 20; // generates number
mesg1.tip=1; // type = 1
if(msgsnd(coadaId,&mesg1,sizeof(Mesaj),0)<0) // sends message to queue
printf("Eroare la trimiterea mesajului:");
msgrcv(coadaId,&mesg1,sizeof(Mesaj),2,0); // reads message from the server
if(mesg1.val==1)exit(0); // if the number is guessed quit
}
感谢
在服务器代码中,“n”是否曾经根据客户端数量递增? –
不,使用scanf在服务器代码中读取n,并保持不变 – vladCovaliov