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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Baqend JavaScript SDK 2.14.1 - Source: lib/connector/Connector.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" data-toggle="collapse" 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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/Connector.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>/* eslint-disable no-restricted-globals */ 'use strict'; const PersistentError = require('../error/PersistentError'); /** * @alias connector.Connector */ class Connector { /** * @param {string} host or location * @param {number=} port * @param {boolean=} secure &lt;code>true&lt;/code> for an secure connection * @param {string=} basePath The basepath of the api * @return {connector.Connector} */ static create(host, port, secure, basePath) { let h = host; let p = port; let s = secure; let b = basePath; if (typeof location !== 'undefined') { if (!h) { h = location.hostname; p = Number(location.port); } if (s === undefined) { s = location.protocol === 'https:'; } } // ensure right type s = !!s; if (b === undefined) { b = Connector.DEFAULT_BASE_PATH; } if (h.indexOf('/') !== -1) { const matches = /^(https?):\/\/([^/:]+|\[[^\]]+\])(:(\d*))?(\/\w+)?\/?$/.exec(h); if (matches) { s = matches[1] === 'https'; h = matches[2].replace(/(\[|])/g, ''); p = matches[4]; b = matches[5] || ''; } else { throw new Error('The connection uri host ' + h + ' seems not to be valid'); } } else if (h !== 'localhost' &amp;&amp; /^[a-z0-9-]*$/.test(h)) { // handle app names as hostname h += Connector.HTTP_DOMAIN; } if (!p) { p = s ? 443 : 80; } const url = Connector.toUri(h, p, s, b); let connection = this.connections[url]; if (!connection) { // check last registered connector first to simplify registering connectors for (let i = this.connectors.length - 1; i >= 0; i -= 1) { const ConnectorConstructor = this.connectors[i]; if (ConnectorConstructor.isUsable &amp;&amp; ConnectorConstructor.isUsable(h, p, s, b)) { connection = new ConnectorConstructor(h, p, s, b); break; } } if (!connection) { throw new Error('No connector is usable for the requested connection.'); } this.connections[url] = connection; } return connection; } static toUri(host, port, secure, basePath) { let uri = (secure ? 'https://' : 'http://') + (host.indexOf(':') !== -1 ? '[' + host + ']' : host); uri += ((secure &amp;&amp; port !== 443) || (!secure &amp;&amp; port !== 80)) ? ':' + port : ''; uri += basePath; return uri; } /** * @param {string} host * @param {number} port * @param {boolean} secure * @param {string} basePath */ constructor(host, port, secure, basePath) { /** * @type {string} * @readonly */ this.host = host; /** * @type {number} * @readonly */ this.port = port; /** * @type {boolean} * @readonly */ this.secure = secure; /** * @type {string} * @readonly */ this.basePath = basePath; /** * the origin do not contains the basepath * @type {string} * @readonly */ this.origin = Connector.toUri(host, port, secure, ''); } /** * @param {connector.Message} message * @return {Promise&lt;connector.Message>} */ send(message) { let response = { status: 0 }; return new Promise((resolve) => { this.prepareRequest(message); this.doSend(message, message.request, resolve); }).then((res) => { response = res; }) .then(() => this.prepareResponse(message, response)) .then(() => { message.doReceive(response); return response; }) .catch((e) => { response.entity = null; throw PersistentError.of(e); }); } /** * Handle the actual message send * @param {connector.Message} message * @param {Object} request * @param {Function} receive * @return {*} * @abstract * @name doSend * @memberOf connector.Connector.prototype */ /** * @param {connector.Message} message * @return {void} */ prepareRequest(message) { const mimeType = message.mimeType(); if (!mimeType) { const type = message.request.type; if (type === 'json') { message.mimeType('application/json;charset=utf-8'); } else if (type === 'text') { message.mimeType('text/plain;charset=utf-8'); } } this.toFormat(message); let accept; switch (message.responseType()) { case 'json': accept = 'application/json'; break; case 'text': accept = 'text/*'; break; default: accept = 'application/json,text/*;q=0.5,*/*;q=0.1'; } if (!message.accept()) { message.accept(accept); } if (this.gzip) { const ifNoneMatch = message.ifNoneMatch(); if (ifNoneMatch &amp;&amp; ifNoneMatch !== '""' &amp;&amp; ifNoneMatch !== '*') { message.ifNoneMatch(ifNoneMatch.slice(0, -1) + '--gzip"'); } } if (message.request.path === '/connect') { message.request.path = message.tokenStorage.signPath(this.basePath + message.request.path) .substring(this.basePath.length); if (message.cacheControl()) { message.request.path += (message.tokenStorage.token ? '&amp;' : '?') + 'BCB'; } } else if (message.tokenStorage) { const token = message.tokenStorage.token; if (token) { message.header('authorization', 'BAT ' + token); } } } /** * Convert the message entity to the sendable representation * @param {connector.Message} message The message to send * @return {void} * @protected * @abstract */ toFormat(message) {} // eslint-disable-line no-unused-vars /** * @param {connector.Message} message * @param {Object} response The received response headers and data * @return {Promise&lt;*>} */ prepareResponse(message, response) { // IE9 returns status code 1223 instead of 204 response.status = response.status === 1223 ? 204 : response.status; let type; const headers = response.headers || {}; // some proxies send content back on 204 responses const entity = response.status === 204 ? null : response.entity; if (entity) { type = message.responseType(); if (!type || response.status >= 400) { const contentType = headers['content-type'] || headers['Content-Type']; if (contentType &amp;&amp; contentType.indexOf('application/json') > -1) { type = 'json'; } } } if (headers.etag) { headers.etag = headers.etag.replace('--gzip', ''); } if (message.tokenStorage) { const token = headers['baqend-authorization-token'] || headers['Baqend-Authorization-Token']; if (token) { message.tokenStorage.update(token); } } return new Promise((resolve) => { resolve(entity &amp;&amp; this.fromFormat(response, entity, type)); }).then((resultEntity) => { response.entity = resultEntity; if (message.request.path.indexOf('/connect') !== -1 &amp;&amp; resultEntity) { this.gzip = !!resultEntity.gzip; } }, (e) => { throw new Error('Response was not valid ' + type + ': ' + e.message); }); } /** * Convert received data to the requested response entity type * @param {Object} response The response object * @param {*} entity The received data * @param {string} type The requested response format * @return {*} * @protected * @abstract */ fromFormat(response, entity, type) {} // eslint-disable-line no-unused-vars } Object.assign(Connector, /** @lends connector.Connector */ { DEFAULT_BASE_PATH: '/v1', HTTP_DOMAIN: '.app.baqend.com', /** * An array of all exposed response headers * @type string[] */ RESPONSE_HEADERS: [ 'baqend-authorization-token', 'content-type', 'baqend-size', 'baqend-acl', 'etag', 'last-modified', 'baqend-created-at', 'baqend-custom-headers', ], /** * Array of all available connector implementations * @type connector.Connector[] */ connectors: [], /** * Array of all created connections * @type Object&lt;string,connector.Connector> */ connections: {}, /** * The connector will detect if gzip is supports. * Returns true if supported otherwise false. * @return {boolean} gzip */ gzip: false, }); module.exports = Connector; </code></pre> </article> </section> <!-- <footer> <strong>Baqend JavaScript SDK 2.14.1</strong><br> &copy 2019 Baqend GmbH<br> Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun, 06 Jan 2019 05:00:21 GMT </footer> --> </div> </div> </div> </div> </div> <div id="footer" style="position:relative; z-index:1;"> <div class="container"> <div class="row"> <div class="col-xs-6 col-sm-3 sitemap"> <h4>Product</h4> <a href="https://www.baqend.com/platform.html">Platform</a> <a href="https://www.baqend.com/speedkit.html">Speed Kit</a> <a href="https://www.baqend.com/features.html">Features</a> <a href="https://www.baqend.com/pricing.html">Platform Pricing</a> <a href="https://www.baqend.com/pricing_speedkit.html">Speed Kit Pricing</a> <a href="https://www.baqend.com/agencies.html">Agencies</a> <a href="https://www.baqend.com/enterprise.html">Enterprise</a> <a href="https://www.baqend.com/features.html#download">Community Edition</a> <a href="https://www.baqend.com/support.html">Support</a> </div> <div class="col-xs-6 col-sm-3 sitemap"> <h4>Company</h4> <a href="https://www.baqend.com/about.html">About us</a> <a href="https://medium.baqend.com">Baqend Blog</a> <a href="https://www.baqend.com/hiring.html">Jobs</a> <a href="https://www.baqend.com/press.html">Press</a> <a href="https://thesis.app.baqend.com/">Bachelor/Master theses</a> <a href="https://www.weblabs.hamburg/">WebLabs.Hamburg</a> </div> <div class="col-xs-6 col-sm-3 sitemap"> <h4>Developer</h4> <a href="https://dashboard.baqend.com/login">Login</a> <a href="https://dashboard.baqend.com/register">Sign Up</a> <a href="https://www.baqend.com/guide">Developer Docs</a> <a href="https://www.baqend.com/guide/roadmap/">Roadmap</a> <a href="https://www.baqend.com/guide/starter-kits">Starter Kits</a> <a href="https://www.baqend.com/js-sdk/latest/baqend.html">JS SDK</a> <a href="https://stackoverflow.com/questions/tagged/baqend/">Stackoverflow</a> </div> <div class="col-xs-6 col-sm-3 contact"> <h4>Contact</h4> <p class="contact-information"> <span> Baqend GmbH<br /> Stresemannstr. 23<br /> 22769 Hamburg<br /> Germany </span> </p> <p class="contact-information"> Email: <a style="display: inline-block" href="mailto:support@baqend.com">support@baqend.com</a> </p> <p class="contact-information"> Tel: <a style="display: inline-block" href="tel:+494060940539">+49 40 60940539</a> </p> </div> </div> <div class="row"> <div class="col-md-12 text-center social"> <a href="https://twitter.com/baqendcom"><i class="fa fa-twitter fa-fw"></i></a> <a href="https://github.com/Baqend"><i class="fa fa-github fa-fw"></i></a> <a href="https://medium.baqend.com/"><i class="fa fa-medium fa-fw"></i></a> <a href="https://www.facebook.com/baqend"><i class="fa fa-facebook fa-fw"></i></a> <a href="https://www.youtube.com/channel/UCsImg6Ts8UEp6-7LE9CP2-Q"><i class="fa fa-youtube fa-fw"></i></a> </div> </div> </div> <footer> <div class="container"> <div class="legal text-center"> <div> <strong>Baqend JavaScript SDK 2.14.1</strong><br> &copy 2019 Baqend GmbH<br> Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun, 06 Jan 2019 05:00:21 GMT </div> <a href="mailto:info@baqend.com">Contact</a> - <a href="https://dashboard.baqend.com/privacy">Privacy Policy</a> - <a href="https://dashboard.baqend.com/terms">Terms of Service</a> - <a href="https://dashboard.baqend.com/imprint">Imprint</a> </div> </div> </footer> </div> <script> prettyPrint(); 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