te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - How can I check DNS using nodejs? - Stack Overflow

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    javascript - How can I check DNS using nodejs? - Stack Overflow

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    I need to do recursive check DNS, like linux's mand 

    $ dig +recurse some.site

    with nodejs. This 'request' have to return object of DNS, because I need to work with them.

    I need this feature to take rightly DNS, it have to get round TTL(I'm not sure that it correctly sounds on English). Can standard dns module do this?

    I need to do recursive check DNS, like linux's mand 

    $ dig +recurse some.site

    with nodejs. This 'request' have to return object of DNS, because I need to work with them.

    I need this feature to take rightly DNS, it have to get round TTL(I'm not sure that it correctly sounds on English). Can standard dns module do this?

    • javascript
    • node.js
    • dns
    Share Improve this question edited Sep 22, 2015 at 3:26 Horo asked Sep 21, 2015 at 12:56 HoroHoro 1021 silver badge10 bronze badges 1
    • 1 Please check if nodejs/api/dns.html helps. – Shubhangi Commented Sep 21, 2015 at 13:15
    Add a ment  | 

    2 Answers 2

    Reset to default 13

    You could use the core DNS module. The first example they give does a lookup of www.google.

    var dns = require('dns');

dns.lookup('www.google.', function onLookup(err, addresses, family) {
  console.log('addresses:', addresses);
});

    Also have a look at this native-dns module

    I have done it! I used this module.

    First I define question:

    var question = dns.Question({
  name: 'somesite.',
  type: 'A',
});

    Second I do request to root server: 

    var dns = require('native-dns');
var standard_dns = require('dns'); //for dns.lookup() function    
var req = dns.Request({
      question: question,
      server: { address: '199.7.91.13', port: 53, type: 'udp' },
      timeout: 1000,
    });

    Then I do this: 

    req.on('message', function (err, answer) {
  answer.authority.forEach(function(a){ //looking each authority server
    var addresses = String(a.data),//stringify it
    standard_dns.lookup(addresses, function(e, add){ //lookup this server with standard 'dns' module
      var req = dns.Request({
         question: question,//question for somesite.
         server: {address: add}//do request on this server
      })
      req.on('message', function(e, a){
        console.log(a);//a - is what you need
       })
     req.send(); //send request
    })

  })
});

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