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447 lines
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<h2 id="project_tagline">Documentation</h2>
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<div class="contents local topic" id="table-of-contents">
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<p class="topic-title first">Table of Contents</p>
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<ul class="simple">
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<li><a class="reference internal" href="#introduction" id="id1">Introduction</a></li>
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<li><a class="reference internal" href="#what-you-will-need" id="id2">What you will need</a><ul>
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<li><a class="reference internal" href="#an-xmpp-jabber-server" id="id3">An XMPP/Jabber server</a></li>
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<li><a class="reference internal" href="#connection-manager" id="id4">Connection Manager</a><ul>
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<li><a class="reference internal" href="#overcoming-cross-domain-request-restrictions" id="id5">Overcoming cross-domain request restrictions</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#server-side-authentication" id="id6">Server-side authentication</a><ul>
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<li><a class="reference internal" href="#pre-binding-and-single-session-support" id="id7">Pre-binding and Single Session Support</a></li>
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</ul>
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</li>
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</ul>
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</li>
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<li><a class="reference internal" href="#quickstart-to-get-a-demo-up-and-running" id="id8">Quickstart (to get a demo up and running)</a></li>
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<li><a class="reference internal" href="#configuration" id="id9">Configuration</a><ul>
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<li><a class="reference internal" href="#configuration-variables" id="id10">Configuration variables</a><ul>
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<li><a class="reference internal" href="#animate" id="id11">animate</a></li>
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<li><a class="reference internal" href="#auto-list-rooms" id="id12">auto_list_rooms</a></li>
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<li><a class="reference internal" href="#auto-subscribe" id="id13">auto_subscribe</a></li>
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<li><a class="reference internal" href="#bosh-service-url" id="id14">bosh_service_url</a></li>
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<li><a class="reference internal" href="#fullname" id="id15">fullname</a></li>
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<li><a class="reference internal" href="#hide-muc-server" id="id16">hide_muc_server</a></li>
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<li><a class="reference internal" href="#prebind" id="id17">prebind</a></li>
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<li><a class="reference internal" href="#show-controlbox-by-default" id="id18">show_controlbox_by_default</a></li>
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<li><a class="reference internal" href="#xhr-user-search" id="id19">xhr_user_search</a></li>
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</ul>
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</li>
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</ul>
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</li>
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<li><a class="reference internal" href="#minification" id="id20">Minification</a><ul>
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<li><a class="reference internal" href="#minifying-javascript" id="id21">Minifying Javascript</a></li>
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<li><a class="reference internal" href="#minifying-css" id="id22">Minifying CSS</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#translations" id="id23">Translations</a></li>
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</ul>
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</div>
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<div class="section" id="introduction">
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<h1><a class="toc-backref" href="#id1">Introduction</a><a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h1>
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<p>Even though you can connect to public XMPP servers on the <a class="reference external" href="http://conversejs.org">conversejs.org</a>
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website, <em>Converse.js</em> is not really meant to be a “Software-as-a-service” (SaaS)
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webchat.</p>
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<p>Instead, its goal is to provide the means for website owners to add a tightly
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integrated instant messaging service to their own sites.</p>
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<p>As a website owner, you are expected to host <em>Converse.js</em> yourself, and to do some legwork to
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properly configure and integrate it into your site.</p>
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<p>The benefit in doing this, is that your users have a much more streamlined and integrated
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webchat experience and that you have control over the data. The latter being a
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requirement for many sites dealing with sensitive information.</p>
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<p>You’ll need to set up your own XMPP server and in order to have
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<a href="#id24"><span class="problematic" id="id25">`Session Support`_</span></a> (i.e. single-signon functionality whereby users are authenticated once and stay
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logged in to XMPP upon page reload) you will also have to add some server-side
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code.</p>
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<p>The <a class="reference internal" href="#what-you-will-need">What you will need</a> section has more information on all these
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requirements.</p>
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</div>
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<div class="section" id="what-you-will-need">
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<h1><a class="toc-backref" href="#id2">What you will need</a><a class="headerlink" href="#what-you-will-need" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="an-xmpp-jabber-server">
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<h2><a class="toc-backref" href="#id3">An XMPP/Jabber server</a><a class="headerlink" href="#an-xmpp-jabber-server" title="Permalink to this headline">¶</a></h2>
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<p><em>Converse.js</em> implements <a class="reference external" href="https://en.wikipedia.org/wiki/Xmpp">XMPP</a> as its messaging protocol, and therefore needs
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to connect to an XMPP/Jabber server (Jabber is really just a synonym for XMPP).</p>
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<p>You can connect to public XMPP servers like <tt class="docutils literal"><span class="pre">jabber.org</span></tt> but if you want to
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have <a href="#id26"><span class="problematic" id="id27">`Session Support`_</span></a> you’ll have to set up your own XMPP server.</p>
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<p>You can find a list of public XMPP servers/providers on <a class="reference external" href="http://xmpp.net">xmpp.net</a> and a list of
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servers that you can set up yourself on <a class="reference external" href="http://xmpp.org/xmpp-software/servers/">xmpp.org</a>.</p>
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</div>
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<div class="section" id="connection-manager">
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<h2><a class="toc-backref" href="#id4">Connection Manager</a><a class="headerlink" href="#connection-manager" title="Permalink to this headline">¶</a></h2>
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<p>Your website and <em>Converse.js</em> use <a class="reference external" href="https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol">HTTP</a> as protocol to communicate with
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the webserver. HTTP connections are stateless and usually shortlived.</p>
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<p><a class="reference external" href="https://en.wikipedia.org/wiki/Xmpp">XMPP</a> on the other hand, is the protocol that enables instant messaging, and
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its connections are stateful and usually longer.</p>
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<p>To enable a web application like <em>Converse.js</em> to communicate with an XMPP
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server, we need a proxy in the middle that can act as a bridge between the two
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protocols.</p>
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<p>This is the job of a connection manager. A connection manager can be either a
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standalone application or part of an XMPP server. <a class="reference external" href="http://www.ejabberd.im">ejabberd</a> for example,
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includes a connection manager (but you have to enable it).</p>
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<p>The demo on the <a class="reference external" href="http://conversejs.org">Converse.js homepage</a> uses a a connection manager located at <a class="reference external" href="https://bind.opkode.im">https://bind.opkode.im</a>.
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This connection manager is for testing purposes only, please don’t use it in
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production.</p>
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<div class="section" id="overcoming-cross-domain-request-restrictions">
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<h3><a class="toc-backref" href="#id5">Overcoming cross-domain request restrictions</a><a class="headerlink" href="#overcoming-cross-domain-request-restrictions" title="Permalink to this headline">¶</a></h3>
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<p>The domain of the <em>Converse.js</em> demo is <em>conversejs.org</em>, but the domain of the connection manager is <em>opkode.im</em>.
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HTTP requests are made by <em>Converse.js</em> to the connection manager via XmlHttpRequests (XHR).
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Until recently, it was not possible to make such requests to a different domain
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than the one currently being served (to prevent XSS attacks).</p>
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<p>Luckily there is now a standard called <a class="reference external" href="https://en.wikipedia.org/wiki/Cross-origin_resource_sharing">CORS</a> (Cross-origin resource sharing), which enables exactly that.
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Modern browsers support CORS, but there are problems with Internet Explorer <
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10.</p>
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<p>IE 8 and 9 partially support CORS via a proprietary implementation called
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XDomainRequest. There is a <a class="reference external" href="https://gist.github.com/1095825/6b4517276f26b66b01fa97b0a78c01275fdc6ff2">Strophe.js plugin</a> which you can use to enable
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support for XDomainRequest when it is present.</p>
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<p>In IE < 8, there is no support for CORS.</p>
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<p>If you need to support these browsers, you can add a front-end proxy in
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Apache/Nginx which serves the connection manager under the same domain as your
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website. This will remove the need for any cross-domain XHR support.</p>
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</div>
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</div>
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<div class="section" id="server-side-authentication">
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<h2><a class="toc-backref" href="#id6">Server-side authentication</a><a class="headerlink" href="#server-side-authentication" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="pre-binding-and-single-session-support">
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<h3><a class="toc-backref" href="#id7">Pre-binding and Single Session Support</a><a class="headerlink" href="#pre-binding-and-single-session-support" title="Permalink to this headline">¶</a></h3>
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<p>It’s possible to enable single-site login, whereby users already
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authenticated in your website will also automatically be logged in on the chat server,
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but this will require custom code on your server.</p>
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<p>Jack Moffitt has a great <a class="reference external" href="http://metajack.im/2008/10/03/getting-attached-to-strophe">blogpost</a> about this and even provides an <a class="reference external" href="https://github.com/metajack/strophejs/tree/master/examples/attach">example Django application</a> to demonstrate it.</p>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p class="last">If you want to enable single session support, make sure to pass <strong>prebind: true</strong>
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when you call <strong>converse.initialize</strong> (see ./main.js).</p>
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</div>
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<p>When you authenticate to the XMPP server on your backend, you’ll receive two
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tokens, RID (request ID) and SID (session ID).</p>
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<p>These tokens then need to be passed back to the javascript running in your
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browser, where you will need them attach to the existing session.</p>
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<p>You can embed the RID and SID tokens in your HTML markup or you can do an
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XMLHttpRequest call to you server and ask it to return them for you.</p>
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<p>Below is one example of how this could work. An Ajax call is made to the
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relative URL <strong>/prebind</strong> and it expects to receive JSON data back.</p>
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<div class="highlight-python"><pre>$.getJSON('/prebind', function (data) {
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var connection = new Strophe.Connection(converse.bosh_service_url);
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connection.attach(data.jid, data.sid, data.rid, function (status) {
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if ((status === Strophe.Status.ATTACHED) || (status === Strophe.Status.CONNECTED)) {
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converse.onConnected(connection)
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}
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});
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}
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);</pre>
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</div>
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<p><strong>Here’s what’s happening:</strong></p>
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<p>The JSON data contains the user’s JID (jabber ID), RID and SID. The URL to the
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BOSH connection manager is already set as a configuration setting on the
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<em>converse</em> object (see ./main.js), so we can reuse it from there.</p>
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<p>A new Strophe.Connection object is instantiated and then <em>attach</em> is called with
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the user’s JID, the necessary tokens and a callback function.</p>
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<p>In the callback function, you call <em>converse.onConnected</em> together with the
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connection object.</p>
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</div>
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</div>
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</div>
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<div class="section" id="quickstart-to-get-a-demo-up-and-running">
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<h1><a class="toc-backref" href="#id8">Quickstart (to get a demo up and running)</a><a class="headerlink" href="#quickstart-to-get-a-demo-up-and-running" title="Permalink to this headline">¶</a></h1>
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<p>When you download a specific release of <em>Converse.js</em>, say for example version 0.3,
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there will be two minified files inside the zip file.</p>
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<p>For version 0.3 they will be:</p>
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<ul class="simple">
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<li>converse.0.3.min.js</li>
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<li>converse.0.3.min.css</li>
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</ul>
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<p>You can include these two files in your website via the <em>script</em> and <em>link</em>
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tags:</p>
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<div class="highlight-python"><pre><link rel="stylesheet" type="text/css" media="screen" href="converse.0.3.min.css">
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<script src="converse.0.3.min.js"></script></pre>
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</div>
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<p>The <em>index.html</em> file inside the Converse.js folder serves as a nice usable
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example of this.</p>
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<p>These minified files provide the same demo-like functionality as is available
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on the <a class="reference external" href="http://conversejs.org">conversejs.org</a> website. Useful for testing or demoing, but not very
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practical.</p>
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<p>You’ll most likely want to implement some kind of single-signon solution for
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your website, where users authenticate once in your website and then stay
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logged into their XMPP session upon page reload.</p>
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<p>For more info on this, read <a href="#id28"><span class="problematic" id="id29">`Session Support`_</span></a>.</p>
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<p>You might also want to have more fine-grained control of what gets included in
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the minified Javascript file. Read <a class="reference internal" href="#configuration">Configuration</a> and <a class="reference internal" href="#minification">Minification</a> for more info on how to do
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that.</p>
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</div>
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<div class="section" id="configuration">
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<h1><a class="toc-backref" href="#id9">Configuration</a><a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h1>
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<p>The included minified JS and CSS files can be used for demoing or testing, but
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you’ll want to configure <em>Converse.js</em> to suit your needs before you deploy it
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on your website.</p>
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<p><em>Converse.js</em> is passed its configuration settings when you call its
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<em>initialize</em> method.</p>
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<p>Please refer to the <a class="reference internal" href="#configuration-variables">Configuration variables</a> section below for info on
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all the available configuration settings.</p>
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<p>After you have configured <em>Converse.js</em>, you’ll have to regenerate the minified
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JS file so that it will include the new settings. Please refer to the
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<a class="reference internal" href="#minification">Minification</a> section for more info on how to do this.</p>
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<div class="section" id="configuration-variables">
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<h2><a class="toc-backref" href="#id10">Configuration variables</a><a class="headerlink" href="#configuration-variables" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="animate">
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<h3><a class="toc-backref" href="#id11">animate</a><a class="headerlink" href="#animate" title="Permalink to this headline">¶</a></h3>
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<p>Default = True</p>
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<p>Show animations, for example when opening and closing chat boxes.</p>
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</div>
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<div class="section" id="auto-list-rooms">
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<h3><a class="toc-backref" href="#id12">auto_list_rooms</a><a class="headerlink" href="#auto-list-rooms" title="Permalink to this headline">¶</a></h3>
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<p>Default = False</p>
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<p>If true, and the XMPP server on which the current user is logged in supports
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multi-user chat, then a list of rooms on that server will be fetched.</p>
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<p>Not recommended for servers with lots of chat rooms.</p>
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<p>For each room on the server a query is made to fetch further details (e.g.
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features, number of occupants etc.), so on servers with many rooms this
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option will create lots of extra connection traffic.</p>
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</div>
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<div class="section" id="auto-subscribe">
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<h3><a class="toc-backref" href="#id13">auto_subscribe</a><a class="headerlink" href="#auto-subscribe" title="Permalink to this headline">¶</a></h3>
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<p>Default = False</p>
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<p>If true, the user will automatically subscribe back to any contact requests.</p>
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</div>
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<div class="section" id="bosh-service-url">
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<h3><a class="toc-backref" href="#id14">bosh_service_url</a><a class="headerlink" href="#bosh-service-url" title="Permalink to this headline">¶</a></h3>
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<p>Connections to an XMPP server depend on a BOSH connection manager which acts as
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a middle man between HTTP and XMPP.</p>
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<p>See <a class="reference external" href="http://metajack.im/2008/09/08/which-bosh-server-do-you-need/l">here</a> for more information.</p>
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</div>
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<div class="section" id="fullname">
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<h3><a class="toc-backref" href="#id15">fullname</a><a class="headerlink" href="#fullname" title="Permalink to this headline">¶</a></h3>
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<p>If you are using prebinding, you need to specify the fullname of the currently
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logged in user.</p>
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</div>
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<div class="section" id="hide-muc-server">
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<h3><a class="toc-backref" href="#id16">hide_muc_server</a><a class="headerlink" href="#hide-muc-server" title="Permalink to this headline">¶</a></h3>
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<p>Default = False</p>
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<p>Hide the <tt class="docutils literal"><span class="pre">server</span></tt> input field of the form inside the <tt class="docutils literal"><span class="pre">Room</span></tt> panel of the
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controlbox. Useful if you want to restrict users to a specific XMPP server of
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your choosing.</p>
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</div>
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<div class="section" id="prebind">
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<h3><a class="toc-backref" href="#id17">prebind</a><a class="headerlink" href="#prebind" title="Permalink to this headline">¶</a></h3>
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<p>Default = False</p>
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<p>Use this option when you want to attach to an existing XMPP connection that was
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already authenticated (usually on the backend before page load).</p>
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<p>This is useful when you don’t want to render the login form on the chat control
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box with each page load.</p>
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<p>When set to true, you’ll need to make sure that the onConnected method is
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called, and passed to it a Strophe connection object.</p>
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<p>Besides requiring the back-end to authenticate you, you’ll also
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have to write a Javascript snippet to attach to the set up connection:</p>
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<div class="highlight-python"><pre>$.JSON({
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'url': 'mysite.com/xmpp-authenticate',
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'success': function (data) {
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connection = new Strophe.Connection(bosh_service_url);
|
|
connection.attach(data.jid, data.sid, data.rid, converse.onConnected);
|
|
}</pre>
|
|
</div>
|
|
<p>The backend must authenticate for you, and then return a SID (session ID) and
|
|
RID (Request ID), which you use when you attach to the connection.</p>
|
|
</div>
|
|
<div class="section" id="show-controlbox-by-default">
|
|
<h3><a class="toc-backref" href="#id18">show_controlbox_by_default</a><a class="headerlink" href="#show-controlbox-by-default" title="Permalink to this headline">¶</a></h3>
|
|
<p>Default = False</p>
|
|
<p>The “controlbox” refers to the special chatbox containing your contacts roster,
|
|
status widget, chatrooms and other controls.</p>
|
|
<p>By default this box is hidden and can be toggled by clicking on any element in
|
|
the page with class <em>toggle-online-users</em>.</p>
|
|
<p>If this options is set to true, the controlbox will by default be shown upon
|
|
page load.</p>
|
|
</div>
|
|
<div class="section" id="xhr-user-search">
|
|
<h3><a class="toc-backref" href="#id19">xhr_user_search</a><a class="headerlink" href="#xhr-user-search" title="Permalink to this headline">¶</a></h3>
|
|
<p>Default = False</p>
|
|
<p>There are two ways to add users.</p>
|
|
<ul class="simple">
|
|
<li>The user inputs a valid JID (Jabber ID), and the user is added as a pending contact.</li>
|
|
<li>The user inputs some text (for example part of a firstname or lastname), an XHR will be made to a backend, and a list of matches are returned. The user can then choose one of the matches to add as a contact.</li>
|
|
</ul>
|
|
<p>This setting enables the second mechanism, otherwise by default the first will
|
|
be used.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="minification">
|
|
<h1><a class="toc-backref" href="#id20">Minification</a><a class="headerlink" href="#minification" title="Permalink to this headline">¶</a></h1>
|
|
<div class="section" id="minifying-javascript">
|
|
<h2><a class="toc-backref" href="#id21">Minifying Javascript</a><a class="headerlink" href="#minifying-javascript" title="Permalink to this headline">¶</a></h2>
|
|
<p>We use <a class="reference external" href="http://requirejs.org">require.js</a> to keep track of <em>Converse.js</em> and its dependencies and to
|
|
to bundle them together in a single minified file fit for deployment to a
|
|
production site.</p>
|
|
<p>To use the require.js’s optimization tool, you’ll need Node and it’s package
|
|
manager, NPM.</p>
|
|
<p>You can then install install require.js for Node like so:</p>
|
|
<div class="highlight-python"><pre>npm install requirejs</pre>
|
|
</div>
|
|
<p>The minified javascript file is then created like this:</p>
|
|
<div class="highlight-python"><pre>r.js -o build.js</pre>
|
|
</div>
|
|
<p>You should now have a new minified file (the name which is specified in build.js).</p>
|
|
<p>You can <a class="reference external" href="http://requirejs.org/docs/optimization.html">read more about require.js’s optimizer here</a>.</p>
|
|
</div>
|
|
<div class="section" id="minifying-css">
|
|
<h2><a class="toc-backref" href="#id22">Minifying CSS</a><a class="headerlink" href="#minifying-css" title="Permalink to this headline">¶</a></h2>
|
|
<p>CSS can be minimized with Yahoo’s yuicompressor tool:</p>
|
|
<div class="highlight-python"><pre>yui-compressor --type=css converse.css -o converse.min.css</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="translations">
|
|
<h1><a class="toc-backref" href="#id23">Translations</a><a class="headerlink" href="#translations" title="Permalink to this headline">¶</a></h1>
|
|
<p>The gettext POT file located in ./locale/converse.pot is the template
|
|
containing all translations and from which for each language an individual PO
|
|
file is generated.</p>
|
|
<p>The POT file contains all translateable strings extracted from converse.js.</p>
|
|
<p>To make a user facing string translateable, wrap it in the double underscore helper
|
|
function like so:</p>
|
|
<div class="highlight-python"><div class="highlight"><pre><span class="n">__</span><span class="p">(</span><span class="s">'This string will be translated at runtime'</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>After adding the string, you’ll need to regenerate the POT file, like so:</p>
|
|
<div class="highlight-python"><pre>make pot</pre>
|
|
</div>
|
|
<p>You can then create or update the PO file for a specific language by doing the following:</p>
|
|
<div class="highlight-python"><pre>msgmerge ./locale/af/LC_MESSAGES/converse.po ./locale/converse.pot -U</pre>
|
|
</div>
|
|
<p>This PO file is then what gets translated.</p>
|
|
<p>If you’ve created a new PO file, please make sure to add the following
|
|
attributes at the top of the file (under <em>Content-Transfer-Encoding</em>). They are
|
|
required as configuration settings for Jed, the Javascript translations library
|
|
that we’re using.</p>
|
|
<div class="highlight-python"><div class="highlight"><pre><span class="s">"domain: converse</span><span class="se">\n</span><span class="s">"</span>
|
|
<span class="s">"lang: af</span><span class="se">\n</span><span class="s">"</span>
|
|
<span class="s">"plural_forms: nplurals=2; plural=(n != 1);</span><span class="se">\n</span><span class="s">"</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Unfortunately Jed cannot use the PO files directly. We have to generate from it
|
|
a file in JSON format and then put that in a .js file for the specific
|
|
language.</p>
|
|
<p>To generate JSON from a PO file, you’ll need po2json for node.js. Run the
|
|
following command to install it (npm being the node.js package manager):</p>
|
|
<div class="highlight-python"><pre>npm install po2json</pre>
|
|
</div>
|
|
<p>You can then convert the translations into JSON format:</p>
|
|
<div class="highlight-python"><pre>po2json locale/af/LC_MESSAGES/converse.po locale/af/LC_MESSAGES/converse.json</pre>
|
|
</div>
|
|
<p>Now from converse.json paste the data as a value for the “locale_data” key in the
|
|
object in the language’s .js file.</p>
|
|
<p>So, if you are for example translating into German (language code ‘de’), you’ll
|
|
create or update the file ./locale/LC_MESSAGES/de.js with the following code:</p>
|
|
<div class="highlight-python"><pre>(function (root, factory) {
|
|
define("af", ['jed'], function () {
|
|
return factory(new Jed({
|
|
"domain": "converse",
|
|
"locale_data": {
|
|
// Paste the JSON data from converse.json here
|
|
}
|
|
})
|
|
}
|
|
}(this, function (i18n) {
|
|
return i18n;
|
|
}));</pre>
|
|
</div>
|
|
<p>making sure to also paste the JSON data as value to the “locale_data” key.</p>
|
|
<div class="admonition note">
|
|
<p class="first admonition-title">Note</p>
|
|
<p class="last">If you are adding translations for a new language that is not already supported,
|
|
you’ll have to make one more edit in ./locale/locales.js to make sure the
|
|
language is loaded by require.js.</p>
|
|
</div>
|
|
<p>Congratulations, you’ve now succesfully added your translations. Sorry for all
|
|
those hoops you had to jump through.</p>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<div class="clearer"></div>
|
|
</div>
|
|
|
|
</section>
|
|
<div class="related">
|
|
<h3>Navigation</h3>
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<a href="genindex.html" title="General Index"
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>index</a></li>
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<li><a href="#">Converse.js 0.3 documentation</a> »</li>
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</ul>
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<footer class="inner">
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© Copyright 2013, JC Brand.
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<p class="copyright">Converse.js created by <a href="http://opkode.com" target="_blank">jcbrand</a></p>
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