/**
* 连接到服务器
* @param SOA_Result $retObj
* @return bool
* @throws \Exception
*/
protected function connectToServer(SOA_Result $retObj)
{
$ret = false;
//循环连接
while (count($this->servers) > 0) {
$svr = $this->getServer();
//基于Swoole扩展
if ($this->haveSwoole) {
$key = $svr['host'] . ':' . $svr['port'] . '-' . $retObj->index;
$socket = new \swoole_client(SWOOLE_SOCK_TCP | SWOOLE_KEEP, SWOOLE_SOCK_SYNC, $key);
$socket->set(array('open_length_check' => true, 'package_max_length' => $this->packet_maxlen, 'package_length_type' => 'N', 'package_body_offset' => RPCServer::HEADER_SIZE, 'package_length_offset' => 0));
/**
* 尝试重连一次
*/
for ($i = 0; $i < 2; $i++) {
$ret = $socket->connect($svr['host'], $svr['port'], $this->timeout);
if ($ret === false and ($socket->errCode == 114 or $socket->errCode == 115)) {
//强制关闭，重连
$socket->close(true);
continue;
} else {
break;
}
}
$socketFd = $socket->sock;
} elseif ($this->haveSockets) {
$socket = new TCP();
$socket->try_reconnect = false;
$ret = $socket->connect($svr['host'], $svr['port'], $this->timeout);
$socketFd = intval($socket->getSocket());
} else {
$socket = new Stream();
$ret = $socket->connect($svr['host'], $svr['port'], $this->timeout);
$socketFd = intval($socket->getSocket());
}
//连接被拒绝，证明服务器已经挂了
//TODO 如果连接失败，需要上报机器存活状态
if ($ret === false and $socket->errCode == 111) {
$this->onConnectServerFailed($svr);
unset($socket);
} else {
$retObj->socket = $socket;
$retObj->server_host = $svr['host'];
$retObj->server_port = $svr['port'];
//使用SOCKET的编号作为ID
$retObj->id = $socketFd;
break;
}
}
return $ret;
}
