There is a classic server on Node.JS that generates requests for LDAP through LDAPjs, the problem is that if you make many requests in a row, say 30-40, then Node.JS hangs, that is, in the console it is clear that it starts processing requests with a delay in a few minutes, it will execute 3-5 requests and hangs, first you sinned on LDAPjs, but then I noticed that the static is not given either, that is, the whole server is down, there were no such problems before LDAPjs, there is also a search for JSON and it works stably on a sufficiently large number of requests, it is clearly a matter of Node.JS itself, the only thing that comes and mind is the fact that LDAPjs exceeds some threshold for using resources in Node.JS ps itself: after a series of experiments, it turned out that if the function is run in a for loop, it will work out 100 requests, but as soon as I make a request web muzzle everything falls, test code cleaned here
/*jslint node: true, plusplus: true, vars: true*/ 'use strict'; var fs = require("fs"); var http = require("http"); var path = require("path"); var url = require('url'); var util = require('util'); var ldap = require('ldapjs'); var pbdb_index = fs.readFileSync('./index.html'); var jquery = fs.readFileSync('./jquery.js'); var server_port = '80'; http.createServer(function (req, res) { if (req.method !== undefined && (req.method).toString() === "POST") { var body = ''; req.on('data', function (data) { body += data; }); req.on('end', function () { var body_arr = decodeURIComponent(body); body_arr = body_arr.replace(/[+]/gi, " ").split('='); res.writeHead(200, {'Content-Type': 'text/html; charset=utf8'}); if (req.url === "/ldap" && body_arr[1].length > 2) { search_in_LDAP(body_arr[0], body_arr[1], function (err, ret_array) { ret_array = ret_array.toString(); res.end(ret_array); } ); } }); } if (req.method !== undefined && (req.method).toString() === "GET") { if (url.parse(req.url).pathname === '/jquery.js') { res.writeHead(200, {'Content-Type': 'text/javasript'}); res.end(jquery); } else { res.writeHead(200, {'Content-Type': 'text/html; charset=utf8'}); res.end(pbdb_index); } } }).listen(server_port); function search_in_LDAP(attribute_id1, search_str, callback) { var client = ldap.createClient({ url: 'ldap://10.0.0.1:389/DC=domainname,DC=ru' }); var ldap_user = 'login'; var ldap_pass = 'password'; var ret_array = []; var attribute_id = "sn"; var opts = { filter: "(&(" + attribute_id + "=" + search_str + "*))", scope: "sub" }; client.bind(ldap_user, ldap_pass, function (err, res) { if (err) { console.log("ERROR: bind error" + err); return 1; } client.search('OU=OU_Name,DC=domainname,DC=ru', opts, function (err, search) { search.on('searchEntry', function (entry) { var user = entry.object; var tem_json_obj = {}; tem_json_obj.sn = entry.object.sn || ""; tem_json_obj.cn = entry.object.cn || ""; tem_json_obj.mail = entry.object.mail || ""; tem_json_obj.department = entry.object.department || ""; tem_json_obj.description = entry.object.description || ""; tem_json_obj.physicalDeliveryOfficeName = entry.object.physicalDeliveryOfficeName || ""; tem_json_obj.title = entry.object.title || ""; tem_json_obj.telephoneNumber = entry.object.telephoneNumber || ""; tem_json_obj.distinguishedName = entry.object.distinguishedName || ""; ret_array.push(tem_json_obj); }); search.on('end', function (err) { client.unbind(function (err, data) { callback(err, ret_array); }); }); }); }); } function strip_string_gi(in_str, regexp_str) { var regexp_key = "gi"; var out_str = []; if (typeof in_str === 'string') { var reg_exp = new RegExp(regexp_str, regexp_key); out_str = in_str.match(reg_exp); if (out_str !== null && out_str.length > 0) { out_str = out_str.join(''); return out_str; } } console.log("strip_string function ERROR:\n" + in_str + "\n" + regexp_str); return null; } 
