mirror of
https://github.com/evennia/evennia.git
synced 2026-03-18 13:56:30 +01:00
214 lines
No EOL
12 KiB
HTML
214 lines
No EOL
12 KiB
HTML
|
||
<!DOCTYPE html>
|
||
|
||
<html>
|
||
<head>
|
||
<meta charset="utf-8" />
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
|
||
|
||
<title>Webserver — Evennia 1.0-dev documentation</title>
|
||
<link rel="stylesheet" href="../_static/nature.css" type="text/css" />
|
||
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
|
||
<script id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
|
||
<script src="../_static/jquery.js"></script>
|
||
<script src="../_static/underscore.js"></script>
|
||
<script src="../_static/doctools.js"></script>
|
||
<script src="../_static/language_data.js"></script>
|
||
<link rel="shortcut icon" href="../_static/favicon.ico"/>
|
||
<link rel="index" title="Index" href="../genindex.html" />
|
||
<link rel="search" title="Search" href="../search.html" />
|
||
<link rel="next" title="Web Client" href="Webclient.html" />
|
||
<link rel="prev" title="Server component" href="Server.html" />
|
||
</head><body>
|
||
<div class="related" role="navigation" aria-label="related navigation">
|
||
<h3>Navigation</h3>
|
||
<ul>
|
||
<li class="right" style="margin-right: 10px">
|
||
<a href="../genindex.html" title="General Index"
|
||
accesskey="I">index</a></li>
|
||
<li class="right" >
|
||
<a href="../py-modindex.html" title="Python Module Index"
|
||
>modules</a> |</li>
|
||
<li class="right" >
|
||
<a href="Webclient.html" title="Web Client"
|
||
accesskey="N">next</a> |</li>
|
||
<li class="right" >
|
||
<a href="Server.html" title="Server component"
|
||
accesskey="P">previous</a> |</li>
|
||
<li class="nav-item nav-item-0"><a href="../index.html">Evennia 1.0-dev</a> »</li>
|
||
<li class="nav-item nav-item-1"><a href="Components-Overview.html" accesskey="U">Core Components</a> »</li>
|
||
<li class="nav-item nav-item-this"><a href="">Webserver</a></li>
|
||
</ul>
|
||
<div class="develop">develop branch</div>
|
||
</div>
|
||
|
||
<div class="document">
|
||
|
||
<div class="documentwrapper">
|
||
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
|
||
<div class="sphinxsidebarwrapper">
|
||
<p class="logo"><a href="../index.html">
|
||
<img class="logo" src="../_static/evennia_logo.png" alt="Logo"/>
|
||
</a></p>
|
||
<div id="searchbox" style="display: none" role="search">
|
||
<h3 id="searchlabel">Quick search</h3>
|
||
<div class="searchformwrapper">
|
||
<form class="search" action="../search.html" method="get">
|
||
<input type="text" name="q" aria-labelledby="searchlabel" />
|
||
<input type="submit" value="Go" />
|
||
</form>
|
||
</div>
|
||
</div>
|
||
<script>$('#searchbox').show(0);</script>
|
||
<h3><a href="../index.html">Table of Contents</a></h3>
|
||
<ul>
|
||
<li><a class="reference internal" href="#">Webserver</a><ul>
|
||
<li><a class="reference internal" href="#basic-webserver-data-flow">Basic Webserver data flow</a><ul>
|
||
<li><a class="reference internal" href="#a-note-on-the-webclient">A note on the webclient</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
<h4>Previous topic</h4>
|
||
<p class="topless"><a href="Server.html"
|
||
title="previous chapter">Server component</a></p>
|
||
<h4>Next topic</h4>
|
||
<p class="topless"><a href="Webclient.html"
|
||
title="next chapter">Web Client</a></p>
|
||
<div role="note" aria-label="source link">
|
||
<!--h3>This Page</h3-->
|
||
<ul class="this-page-menu">
|
||
<li><a href="../_sources/Components/Webserver.md.txt"
|
||
rel="nofollow">Show Page Source</a></li>
|
||
</ul>
|
||
</div><h3>Links</h3>
|
||
<ul>
|
||
<li><a href="https://www.evennia.com">Home page</a> </li>
|
||
<li><a href="https://github.com/evennia/evennia">Evennia Github</a> </li>
|
||
<li><a href="http://games.evennia.com">Game Index</a> </li>
|
||
<li>
|
||
<a href="https://discord.gg/AJJpcRUhtF">Discord</a> -
|
||
<a href="https://github.com/evennia/evennia/discussions">Discussions</a> -
|
||
<a href="https://evennia.blogspot.com/">Blog</a>
|
||
</li>
|
||
</ul>
|
||
<h3>Versions</h3>
|
||
<ul>
|
||
<li><a href="Webserver.html">1.0-dev (develop branch)</a></li>
|
||
<ul>
|
||
<li><a href="../0.9.5/index.html">0.9.5 (v0.9.5 branch)</a></li>
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
<div class="bodywrapper">
|
||
<div class="body" role="main">
|
||
|
||
<section class="tex2jax_ignore mathjax_ignore" id="webserver">
|
||
<h1>Webserver<a class="headerlink" href="#webserver" title="Permalink to this headline">¶</a></h1>
|
||
<p>When Evennia starts it also spins up its own Twisted-based web server. The
|
||
webserver is responsible for serving the html pages of the game’s website. It
|
||
can also serve static resources like images and music.</p>
|
||
<p>The webclient runs as part of the <a class="reference internal" href="Portal-And-Server.html"><span class="doc std std-doc">Server</span></a> process of
|
||
Evennia. This means that it can directly access cached objects modified
|
||
in-game, and there is no risk of working with objects that are temporarily
|
||
out-of-sync in the database.</p>
|
||
<p>The webserver runs on Twisted and is meant to be used in a production
|
||
environment. It leverages the Django web framework and provides:</p>
|
||
<ul class="simple">
|
||
<li><p>A <a class="reference internal" href="Website.html"><span class="doc std std-doc">Game Website</span></a> - this is what you see when you go to
|
||
<code class="docutils literal notranslate"><span class="pre">localhost:4001</span></code>. The look of the website is meant to be customized to your
|
||
game. Users logged into the website will be auto-logged into the game if they
|
||
do so with the webclient since they share the same login credentials (there
|
||
is no way to safely do auto-login with telnet clients).</p></li>
|
||
<li><p>The <a class="reference internal" href="Web-Admin.html"><span class="doc std std-doc">Web Admin</span></a> is based on the Django web admin and allows you to
|
||
edit the game database in a graphical interface.</p></li>
|
||
<li><p>The <a class="reference internal" href="Webclient.html"><span class="doc std std-doc">Webclient</span></a> page is served by the webserver, but the actual
|
||
game communication (sending/receiving data) is done by the javascript client
|
||
on the page opening a websocket connection directly to Evennia’s Portal.</p></li>
|
||
<li><p>The <a class="reference internal" href="Web-API.html"><span class="doc std std-doc">Evennia REST-API</span></a> allows for accessing the database from outside the game
|
||
(only if `REST_API_ENABLED=True).</p></li>
|
||
</ul>
|
||
<section id="basic-webserver-data-flow">
|
||
<h2>Basic Webserver data flow<a class="headerlink" href="#basic-webserver-data-flow" title="Permalink to this headline">¶</a></h2>
|
||
<ol class="simple">
|
||
<li><p>A user enters an url in their browser (or clicks a button). This leads to
|
||
the browser sending a <em>HTTP request</em> to the server containing an url-path
|
||
(like for <code class="docutils literal notranslate"><span class="pre">https://localhost:4001/</span></code>, the part of the url we need to consider
|
||
<code class="docutils literal notranslate"><span class="pre">/</span></code>). Other possibilities would be <code class="docutils literal notranslate"><span class="pre">/admin/</span></code>, <code class="docutils literal notranslate"><span class="pre">/login/</span></code>, <code class="docutils literal notranslate"><span class="pre">/channels/</span></code> etc.</p></li>
|
||
<li><p>evennia (through Django) will make use of the regular expressions registered
|
||
in the <code class="docutils literal notranslate"><span class="pre">urls.py</span></code> file. This acts as a rerouter to <em>views</em>, which are
|
||
regular Python functions or callable classes able to process the incoming
|
||
request (think of these as similar to the right Evennia Command being
|
||
selected to handle your input - views are like Commands in this sense). In
|
||
the case of <code class="docutils literal notranslate"><span class="pre">/</span></code> we reroute to a view handling the main index-page of the
|
||
website.</p></li>
|
||
<li><p>The view code will prepare all the data needed by the web page. For the default
|
||
index page, this means gather the game statistics so you can see how many
|
||
are currently connected to the game etc.</p></li>
|
||
<li><p>The view will next fetch a <em>template</em>. A template is a HTML-document with special
|
||
‘placeholder’ tags (written as <code class="docutils literal notranslate"><span class="pre">{{...}}</span></code> or <code class="docutils literal notranslate"><span class="pre">{%</span> <span class="pre">...</span> <span class="pre">%}</span></code> usually). These
|
||
placeholders allow the view to inject dynamic content into the HTML and make
|
||
the page customized to the current situation. For the index page, it means
|
||
injecting the current player-count in the right places of the html page. This
|
||
is called ‘rendering’ the template. The result is a complete HTML page.</p></li>
|
||
<li><p>(The view can also pull in a <em>form</em> to customize user-input in a similar way.)</p></li>
|
||
<li><p>The finished HTML page is packed into a <em>HTTP response</em> and returned to the
|
||
web browser, which can now display the page!</p></li>
|
||
</ol>
|
||
<section id="a-note-on-the-webclient">
|
||
<h3>A note on the webclient<a class="headerlink" href="#a-note-on-the-webclient" title="Permalink to this headline">¶</a></h3>
|
||
<p>The web browser can also execute code directly without talking to the Server.
|
||
This code must be written/loaded into the web page and is written using the
|
||
Javascript programming language (there is no way around this, it is what web
|
||
browsers understand). Executing Javascript is something the web browser does,
|
||
it operates independently from Evennia. Small snippets of javascript can be
|
||
used on a page to have buttons react, make small animations etc that doesn’t
|
||
require the server.</p>
|
||
<p>In the case of the <a class="reference internal" href="Webclient.html"><span class="doc std std-doc">Webclient</span></a>, Evennia will load the Webclient page
|
||
as above, but the page then initiates Javascript code (a lot of it) responsible
|
||
for actually displaying the client GUI, allows you to resize windows etc.</p>
|
||
<p>After it starts, the webclient ‘calls home’ and spins up a
|
||
<a class="reference external" href="https://en.wikipedia.org/wiki/WebSocket">websocket</a> link to the Evennia Portal - this
|
||
is how all data is then exchanged. So after the initial loading of the
|
||
webclient page, the above sequence doesn’t happen again until close the tab and
|
||
come back or you reload it manually in your browser.</p>
|
||
</section>
|
||
</section>
|
||
</section>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
</div>
|
||
<div class="related" role="navigation" aria-label="related navigation">
|
||
<h3>Navigation</h3>
|
||
<ul>
|
||
<li class="right" style="margin-right: 10px">
|
||
<a href="../genindex.html" title="General Index"
|
||
>index</a></li>
|
||
<li class="right" >
|
||
<a href="../py-modindex.html" title="Python Module Index"
|
||
>modules</a> |</li>
|
||
<li class="right" >
|
||
<a href="Webclient.html" title="Web Client"
|
||
>next</a> |</li>
|
||
<li class="right" >
|
||
<a href="Server.html" title="Server component"
|
||
>previous</a> |</li>
|
||
<li class="nav-item nav-item-0"><a href="../index.html">Evennia 1.0-dev</a> »</li>
|
||
<li class="nav-item nav-item-1"><a href="Components-Overview.html" >Core Components</a> »</li>
|
||
<li class="nav-item nav-item-this"><a href="">Webserver</a></li>
|
||
</ul>
|
||
<div class="develop">develop branch</div>
|
||
</div>
|
||
<div class="footer" role="contentinfo">
|
||
© Copyright 2022, The Evennia developer community.
|
||
Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 3.2.1.
|
||
</div>
|
||
</body>
|
||
</html> |