$read = $write = array();
while (true) {
$events = $poll->poll($read, $write);
foreach ($read as $socket) {
$zmsg = new Zmsg($socket);
$zmsg->recv();
if ($socket === $frontend) {
$zmsg->push("W");
$zmsg->set_socket($backend)->send();
} elseif ($socket === $backend) {
$zmsg->pop();
$zmsg->push("C");
$zmsg->set_socket($frontend)->send();
}
}
}
}
$wpid = pcntl_fork();
if ($wpid == 0) {
worker_task();
exit;
}
$bpid = pcntl_fork();
if ($bpid == 0) {
broker_task();
exit;
}
sleep(1);
client_task();
posix_kill($wpid, SIGKILL);
posix_kill($bpid, SIGKILL);
function main()
{
for ($num_clients = 0; $num_clients < 3; $num_clients++) {
$pid = pcntl_fork();
if ($pid == 0) {
client_task();
exit;
}
}
$pid = pcntl_fork();
if ($pid == 0) {
server_task();
exit;
}
}