PHP socket 发到指定的地址,该如何解决

$conn = socket_connect ($socket, '192.168.1.100', 13565);  $buffer = "ok";$command = socket_sendto($socket,$buffer,strlen($buffer),0,'192.168.1.100','192.168.1.100');

$addr = "192.168.1.121";$port = 1338;$remoteIP = "";$remotePort = "";$socket = socket_create(AF_INET,SOCK_STREAM,SOL_TCP);if($socket < 0) {        echo "Socket create:".$socket_strerror($socket)."\n";        exit;}if ( ($ret = socket_bind($socket, $addr, $port)) < 0 ) {    echo "socket bind:".socket_strerror()."\n";    exit;}if ( ($ret = socket_listen($socket, 5)) < 0 ) {    echo "socket listen:".socket_strerror()."\n";    exit;}socket_set_nonblock($socket);echo "Wainting for a connection:\n";$clients = array($socket);while(true) {    $read = $clients;    if(socket_select($read, $writes=NULL, $execs=NULL, 3) < 1){        //echo ".";        continue;    }    if(in_array($socket,$read)) {        $clients[] = $newsock = socket_accept($socket);        socket_set_nonblock($newsock);        socket_getpeername($newsock,&$remoteIP,&$remotePort);                $key = array_search($socket,$read);        unset($read[$key]);        $msg = "Server: $addr\r\n".                "Notice:Welcome the user from ".$remoteIP.":".$remotePort.".\r\n";        echo $remoteIP.":".$remotePort." conected in.\r\n";        socket_write($newsock,$msg);    }    foreach($read as $read_sock) {        $data = @socket_read($read_sock,1024,PHP_BINARY_READ);        if($data == false) {            $key = array_search($read_sock,$clients);            print_r($clients[$key]);            unset($clients[$key]);            socket_close($read_sock);            echo "Client disconnected.\n";            continue;        }                $command = strtoupper ($data);                switch ($command)        {            case "LIST":                $writer = print_r($clients,1);                break;            case "HELLO":                $writer = "Hello Everybody!";                break;            case "QUIT":                $writer = "Bye-Bye";                break;            case "SLEEP":                sleep(30);                $writer = "sleeped 10 seconds!";                break;            case "HELP":                $writer = "HELLO\tQUIT\tHELP";                break;            default:                $writer = "Error Command!\r\nType help for help message!";        }        socket_write($read_sock, $writer);        //exit;    }}socket_close($socket);

// Client   // 设置错误处理  error_reporting (E_ALL);  // 设置处理时间  set_time_limit (0);    $ip = "192.168.1.121";       // IP 地址  $port = 1338;            // 端口号    $socket = socket_create (AF_INET, SOCK_STREAM, SOL_TCP);   // 创建一个SOCKET  if ($socket)      echo "socket_create() successed!\n";  else      echo "socket_create() failed:".socket_strerror ($socket)."\n";    $conn = socket_connect ($socket, $ip, $port);       // 建立SOCKET的连接  if ($conn)      echo "Success to connection![".$ip.":".$port."]\n";  else      echo "socket_connect() failed:".socket_strerror ($conn)."\n";    echo socket_read ($socket, 1024);       $stdin = fopen ('php://stdin', 'r');  while (true)  {      $command = trim (fgets ($stdin, 1024));      socket_write ($socket, $command, strlen ($command));      $msg = trim (socket_read ($socket, 1024));      echo $msg."\n";      if ($msg == "Bye-Bye")          break;  }  fclose ($stdin);  socket_close ($socket);