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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Baqend JavaScript SDK 2.14.1 - Source: lib/connector/NodeConnector.js</title> <script src="scripts/prettify/prettify.js"> </script> <script src="scripts/prettify/lang-css.js"> </script> <!--[if lt IE 9]> <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico"> <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> <link type="text/css" rel="stylesheet" href="styles/bootstrap-baqend.min.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> <link type="text/css" rel="stylesheet" href="styles/font-awesome-4.7.0.css"> </head> <body> <nav class="navbar navbar-default navbar-fixed-top" role="navigation"> <div class="navbar-inner container"> <!-- Collapsed navigation --> <div class="navbar-header"> <!-- Expander button --> <button type="button" class="navbar-toggle" 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href="partialupdate.PartialUpdateBuilder.html" class="nav-name">PartialUpdateBuilder</a></li> <li class=""><a href="partialupdate.UpdateOperation.html" class="nav-name">UpdateOperation</a></li> </ul> </li> <li class=""> <a href="query.html" class="nav-name">query</a> <ul class="nav"> <li class=""><a href="query.Builder.html" class="nav-name">Builder</a></li> <li class=""><a href="query.Filter.html" class="nav-name">Filter</a></li> <li class=""><a href="query.Node.html" class="nav-name">Node</a></li> <li class=""><a href="query.Operator.html" class="nav-name">Operator</a></li> <li class=""><a href="query.Query.html" class="nav-name">Query</a></li> <li class=""><a href="query.Stream.html" class="nav-name">Stream</a></li> <li class=""><a href="query.Condition.html" class="nav-name">Condition</a></li> </ul> </li> <li class=""> <a href="util.html" class="nav-name">util</a> <ul class="nav"> <li class=""><a href="util.Code.html" class="nav-name">Code</a></li> <li class=""><a href="util.Lockable.html" class="nav-name">Lockable</a></li> <li class=""><a href="util.Logger.html" class="nav-name">Logger</a></li> <li class=""><a href="util.Metadata.html" class="nav-name">Metadata</a></li> <li class=""><a href="util.Modules.html" class="nav-name">Modules</a></li> <li class=""><a href="util.Permission.html" class="nav-name">Permission</a></li> <li class=""><a href="util.PushMessage.html" class="nav-name">PushMessage</a></li> <li class=""><a href="util.TokenStorage.html" class="nav-name">TokenStorage</a></li> <li class=""><a href="util.ValidationResult.html" class="nav-name">ValidationResult</a></li> <li class=""><a href="util.Validator.html" class="nav-name">Validator</a></li> <li class=""><a href="util.TokenStorageFactory.html" class="nav-name">TokenStorageFactory</a></li> </ul> </li> </ul> </div> <div class="col-md-12" id="main"> <div class="content"> <h1 class="page-title">Source: lib/connector/NodeConnector.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>'use strict'; const Connector = require('./Connector'); const PersistentError = require('../error/PersistentError'); let http; let https; /** * @alias connector.NodeConnector * @extends connector.Connector */ class NodeConnector extends Connector { static isUsable() { if (!http) { try { // the require call will fail, if we can't require the http module, // therefore this connector implementation can't be used /* eslint-disable global-require */ https = require('https'); http = require('http'); /* eslint-enable global-require */ } catch (e) { // ignore } } // prevent using when it is shimmed return http &amp;&amp; http.Server; } constructor(host, port, secure, basePath) { super(host, port, secure, basePath); this.cookie = null; this.http = secure ? https : http; } /** * @inheritDoc */ doSend(message, request, receive) { request.host = this.host; request.port = this.port; request.path = this.basePath + request.path; const entity = request.entity; const type = request.type; let responseType = message.responseType(); if (this.cookie &amp;&amp; message.withCredentials) { request.headers.cookie = this.cookie; } const req = this.http.request(request, (res) => { const cookie = res.headers['set-cookie']; if (cookie) { // cookie may be an array, convert it to a string this.cookie = this.parseCookie(cookie + ''); } const status = res.statusCode; if (status >= 400) { responseType = 'json'; } if (responseType === 'stream') { receive({ status, headers: res.headers, entity: res, }); return; } const binary = responseType &amp;&amp; responseType !== 'text' &amp;&amp; responseType !== 'json'; const chunks = []; if (!binary) { res.setEncoding('utf-8'); } res.on('data', (chunk) => { chunks.push(chunk); }); res.on('end', () => { receive({ status, headers: res.headers, entity: binary ? Buffer.concat(chunks) : chunks.join(''), }); }); }); req.on('error', (e) => { receive({ status: 0, error: e, }); }); if (type === 'stream') { entity.pipe(req); } else if (type === 'buffer') { req.end(entity); } else if (type) { req.end(entity, 'utf8'); } else { req.end(); } } /** * Parse the cookie header * @param {string} header * @return {(string|null)} */ parseCookie(header) { const parts = header.split(';'); for (let i = 0, len = parts.length; i &lt; len; i += 1) { const part = parts[i]; if (part.indexOf('Expires=') === 0) { const date = Date.parse(part.substring(8)); if (date &lt; Date.now()) { return null; } } } return parts[0]; } /** * @inheritDoc */ toFormat(message) { let type = message.request.type; if (type) { let entity = message.request.entity; let mimeType = message.mimeType(); switch (type) { case 'stream': if (!message.contentLength()) { throw new PersistentError('You must specify a content length while making a stream based upload.'); } break; case 'buffer': break; case 'arraybuffer': type = 'buffer'; entity = Buffer.from(entity); break; case 'data-url': { const match = entity.match(/^data:(.+?)(;base64)?,(.*)$/); const isBase64 = match[2]; entity = match[3]; type = 'buffer'; mimeType = mimeType || match[1]; if (isBase64) { entity = Buffer.from(entity, 'base64'); } else { entity = Buffer.from(decodeURIComponent(entity), 'utf8'); } break; } case 'base64': type = 'buffer'; entity = Buffer.from(entity, 'base64'); break; case 'json': if (typeof entity !== 'string') { entity = JSON.stringify(entity); } break; case 'text': break; default: throw new Error('The request type ' + type + ' is not supported'); } message.entity(entity, type).mimeType(mimeType); } } /** * @inheritDoc */ fromFormat(response, entity, type) { switch (type) { case 'json': return JSON.parse(entity); case 'data-url': case 'base64': { const base64 = entity.toString('base64'); if (type === 'base64') { return base64; } return 'data:' + response.headers['content-type'] + ';base64,' + base64; } case 'arraybuffer': return entity.buffer.slice(entity.byteOffset, entity.byteOffset + entity.byteLength); 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