mirror of
https://github.com/evennia/evennia.git
synced 2026-03-19 06:16:31 +01:00
343 lines
27 KiB
HTML
343 lines
27 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>Custom Protocols — Evennia 0.9.5 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>
|
|||
|
|
<script async="async" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/latest.js?config=TeX-AMS-MML_HTMLorMML"></script>
|
|||
|
|
<script type="text/x-mathjax-config">MathJax.Hub.Config({"tex2jax": {"processClass": "tex2jax_process|mathjax_process|math|output_area"}})</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" />
|
|||
|
|
</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="nav-item nav-item-0"><a href="index.html">Evennia 0.9.5</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-this"><a href="">Custom Protocols</a></li>
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
<div class="document">
|
|||
|
|
<div class="documentwrapper">
|
|||
|
|
<div class="bodywrapper">
|
|||
|
|
<div class="body" role="main">
|
|||
|
|
|
|||
|
|
<section class="tex2jax_ignore mathjax_ignore" id="custom-protocols">
|
|||
|
|
<h1>Custom Protocols<a class="headerlink" href="#custom-protocols" title="Permalink to this headline">¶</a></h1>
|
|||
|
|
<p><em>Note: This is considered an advanced topic and is mostly of interest to users planning to implement
|
|||
|
|
their own custom client protocol.</em></p>
|
|||
|
|
<p>A <a class="reference internal" href="Sessions.html#portal-and-server-sessions"><span class="std std-doc">PortalSession</span></a> is the basic data object representing an
|
|||
|
|
external
|
|||
|
|
connection to the Evennia <a class="reference internal" href="Portal-And-Server.html"><span class="doc std std-doc">Portal</span></a> – usually a human player running a mud client
|
|||
|
|
of some kind. The way they connect (the language the player’s client and Evennia use to talk to
|
|||
|
|
each other) is called the connection <em>Protocol</em>. The most common such protocol for MUD:s is the
|
|||
|
|
<em>Telnet</em> protocol. All Portal Sessions are stored and managed by the Portal’s <em>sessionhandler</em>.</p>
|
|||
|
|
<p>It’s technically sometimes hard to separate the concept of <em>PortalSession</em> from the concept of
|
|||
|
|
<em>Protocol</em> since both depend heavily on the other (they are often created as the same class). When
|
|||
|
|
data flows through this part of the system, this is how it goes</p>
|
|||
|
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="c1"># In the Portal</span>
|
|||
|
|
<span class="n">You</span> <span class="o"><-></span>
|
|||
|
|
<span class="n">Protocol</span> <span class="o">+</span> <span class="n">PortalSession</span> <span class="o"><-></span>
|
|||
|
|
<span class="n">PortalSessionHandler</span> <span class="o"><-></span>
|
|||
|
|
<span class="p">(</span><span class="n">AMP</span><span class="p">)</span> <span class="o"><-></span>
|
|||
|
|
<span class="n">ServerSessionHandler</span> <span class="o"><-></span>
|
|||
|
|
<span class="n">ServerSession</span> <span class="o"><-></span>
|
|||
|
|
<span class="n">InputFunc</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>(See the <a class="reference internal" href="Messagepath.html"><span class="doc std std-doc">Message Path</span></a> for the bigger picture of how data flows through Evennia). The
|
|||
|
|
parts that needs to be customized to make your own custom protocol is the <code class="docutils literal notranslate"><span class="pre">Protocol</span> <span class="pre">+</span> <span class="pre">PortalSession</span></code>
|
|||
|
|
(which translates between data coming in/out over the wire to/from Evennia internal representation)
|
|||
|
|
as well as the <code class="docutils literal notranslate"><span class="pre">InputFunc</span></code> (which handles incoming data).</p>
|
|||
|
|
<section id="adding-custom-protocols">
|
|||
|
|
<h2>Adding custom Protocols<a class="headerlink" href="#adding-custom-protocols" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>Evennia has a plugin-system that add the protocol as a new “service” to the application.</p>
|
|||
|
|
<p>Take a look at <code class="docutils literal notranslate"><span class="pre">evennia/server/portal/portal.py</span></code>, notably the sections towards the end of that file.
|
|||
|
|
These are where the various in-built services like telnet, ssh, webclient etc are added to the
|
|||
|
|
Portal (there is an equivalent but shorter list in <code class="docutils literal notranslate"><span class="pre">evennia/server/server.py</span></code>).</p>
|
|||
|
|
<p>To add a new service of your own (for example your own custom client protocol) to the Portal or
|
|||
|
|
Server, look at <code class="docutils literal notranslate"><span class="pre">mygame/server/conf/server_services_plugins</span></code> and <code class="docutils literal notranslate"><span class="pre">portal_services_plugins</span></code>. By
|
|||
|
|
default Evennia will look into these modules to find plugins. If you wanted to have it look for more
|
|||
|
|
modules, you could do the following:</p>
|
|||
|
|
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span> <span class="c1"># add to the Server</span>
|
|||
|
|
<span class="n">SERVER_SERVICES_PLUGIN_MODULES</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">'server.conf.my_server_plugins'</span><span class="p">)</span>
|
|||
|
|
<span class="c1"># or, if you want to add to the Portal</span>
|
|||
|
|
<span class="n">PORTAL_SERVICES_PLUGIN_MODULES</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">'server.conf.my_portal_plugins'</span><span class="p">)</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>When adding a new connection you’ll most likely only need to add new things to the
|
|||
|
|
<code class="docutils literal notranslate"><span class="pre">PORTAL_SERVICES_PLUGIN_MODULES</span></code>.</p>
|
|||
|
|
<p>This module can contain whatever you need to define your protocol, but it <em>must</em> contain a function
|
|||
|
|
<code class="docutils literal notranslate"><span class="pre">start_plugin_services(app)</span></code>. This is called by the Portal as part of its upstart. The function
|
|||
|
|
<code class="docutils literal notranslate"><span class="pre">start_plugin_services</span></code> must contain all startup code the server need. The <code class="docutils literal notranslate"><span class="pre">app</span></code> argument is a
|
|||
|
|
reference to the Portal/Server application itself so the custom service can be added to it. The
|
|||
|
|
function should not return anything.</p>
|
|||
|
|
<p>This is how it looks:</p>
|
|||
|
|
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span> <span class="c1"># mygame/server/conf/portal_services_plugins.py</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># here the new Portal Twisted protocol is defined</span>
|
|||
|
|
<span class="k">class</span> <span class="nc">MyOwnFactory</span><span class="p">(</span> <span class="o">...</span> <span class="p">):</span>
|
|||
|
|
<span class="p">[</span><span class="o">...</span><span class="p">]</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># some configs</span>
|
|||
|
|
<span class="n">MYPROC_ENABLED</span> <span class="o">=</span> <span class="kc">True</span> <span class="c1"># convenient off-flag to avoid having to edit settings all the time</span>
|
|||
|
|
<span class="n">MY_PORT</span> <span class="o">=</span> <span class="mi">6666</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">start_plugin_services</span><span class="p">(</span><span class="n">portal</span><span class="p">):</span>
|
|||
|
|
<span class="s2">"This is called by the Portal during startup"</span>
|
|||
|
|
<span class="k">if</span> <span class="ow">not</span> <span class="n">MYPROC_ENABLED</span><span class="p">:</span>
|
|||
|
|
<span class="k">return</span>
|
|||
|
|
<span class="c1"># output to list this with the other services at startup</span>
|
|||
|
|
<span class="nb">print</span><span class="p">(</span><span class="s2">" myproc: </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="n">MY_PORT</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># some setup (simple example)</span>
|
|||
|
|
<span class="n">factory</span> <span class="o">=</span> <span class="n">MyOwnFactory</span><span class="p">()</span>
|
|||
|
|
<span class="n">my_service</span> <span class="o">=</span> <span class="n">internet</span><span class="o">.</span><span class="n">TCPServer</span><span class="p">(</span><span class="n">MY_PORT</span><span class="p">,</span> <span class="n">factory</span><span class="p">)</span>
|
|||
|
|
<span class="c1"># all Evennia services must be uniquely named</span>
|
|||
|
|
<span class="n">my_service</span><span class="o">.</span><span class="n">setName</span><span class="p">(</span><span class="s2">"MyService"</span><span class="p">)</span>
|
|||
|
|
<span class="c1"># add to the main portal application</span>
|
|||
|
|
<span class="n">portal</span><span class="o">.</span><span class="n">services</span><span class="o">.</span><span class="n">addService</span><span class="p">(</span><span class="n">my_service</span><span class="p">)</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>Once the module is defined and targeted in settings, just reload the server and your new
|
|||
|
|
protocol/services should start with the others.</p>
|
|||
|
|
</section>
|
|||
|
|
<section id="writing-your-own-protocol">
|
|||
|
|
<h2>Writing your own Protocol<a class="headerlink" href="#writing-your-own-protocol" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>Writing a stable communication protocol from scratch is not something we’ll cover here, it’s no
|
|||
|
|
trivial task. The good news is that Twisted offers implementations of many common protocols, ready
|
|||
|
|
for adapting.</p>
|
|||
|
|
<p>Writing a protocol implementation in Twisted usually involves creating a class inheriting from an
|
|||
|
|
already existing Twisted protocol class and from <code class="docutils literal notranslate"><span class="pre">evennia.server.session.Session</span></code> (multiple
|
|||
|
|
inheritance), then overloading the methods that particular protocol uses to link them to the
|
|||
|
|
Evennia-specific inputs.</p>
|
|||
|
|
<p>Here’s a example to show the concept:</p>
|
|||
|
|
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># In module that we'll later add to the system through PORTAL_SERVICE_PLUGIN_MODULES</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># pseudo code</span>
|
|||
|
|
<span class="kn">from</span> <span class="nn">twisted.something</span> <span class="kn">import</span> <span class="n">TwistedClient</span>
|
|||
|
|
<span class="c1"># this class is used both for Portal- and Server Sessions</span>
|
|||
|
|
<span class="kn">from</span> <span class="nn">evennia.server.session</span> <span class="kn">import</span> <span class="n">Session</span>
|
|||
|
|
|
|||
|
|
<span class="kn">from</span> <span class="nn">evennia.server.portal.portalsessionhandler</span> <span class="kn">import</span> <span class="n">PORTAL_SESSIONS</span>
|
|||
|
|
|
|||
|
|
<span class="k">class</span> <span class="nc">MyCustomClient</span><span class="p">(</span><span class="n">TwistedClient</span><span class="p">,</span> <span class="n">Session</span><span class="p">):</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">sessionhandler</span> <span class="o">=</span> <span class="n">PORTAL_SESSIONS</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># these are methods we must know that TwistedClient uses for</span>
|
|||
|
|
<span class="c1"># communication. Name and arguments could vary for different Twisted protocols</span>
|
|||
|
|
<span class="k">def</span> <span class="nf">onOpen</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="c1"># let's say this is called when the client first connects</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># we need to init the session and connect to the sessionhandler. The .factory</span>
|
|||
|
|
<span class="c1"># is available through the Twisted parents</span>
|
|||
|
|
|
|||
|
|
<span class="n">client_address</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getClientAddress</span><span class="p">()</span> <span class="c1"># get client address somehow</span>
|
|||
|
|
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">init_session</span><span class="p">(</span><span class="s2">"mycustom_protocol"</span><span class="p">,</span> <span class="n">client_address</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">factory</span><span class="o">.</span><span class="n">sessionhandler</span><span class="p">)</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">sessionhandler</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">onClose</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reason</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="c1"># called when the client connection is dropped</span>
|
|||
|
|
<span class="c1"># link to the Evennia equivalent</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">disconnect</span><span class="p">(</span><span class="n">reason</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">onMessage</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indata</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="c1"># called with incoming data</span>
|
|||
|
|
<span class="c1"># convert as needed here</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">data_in</span><span class="p">(</span><span class="n">data</span><span class="o">=</span><span class="n">indata</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">sendMessage</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">outdata</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="c1"># called to send data out</span>
|
|||
|
|
<span class="c1"># modify if needed</span>
|
|||
|
|
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">sendMessage</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">outdata</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># these are Evennia methods. They must all exist and look exactly like this</span>
|
|||
|
|
<span class="c1"># The above twisted-methods call them and vice-versa. This connects the protocol</span>
|
|||
|
|
<span class="c1"># the Evennia internals.</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">disconnect</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reason</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Called when connection closes.</span>
|
|||
|
|
<span class="sd"> This can also be called directly by Evennia when manually closing the connection.</span>
|
|||
|
|
<span class="sd"> Do any cleanups here.</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">sessionhandler</span><span class="o">.</span><span class="n">disconnect</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">at_login</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Called when this session authenticates by the server (if applicable)</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">data_in</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Data going into the server should go through this method. It</span>
|
|||
|
|
<span class="sd"> should pass data into `sessionhandler.data_in`. THis will be called</span>
|
|||
|
|
<span class="sd"> by the sessionhandler with the data it gets from the approrpriate</span>
|
|||
|
|
<span class="sd"> send_* method found later in this protocol.</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">sessionhandler</span><span class="o">.</span><span class="n">data_in</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="n">kwargs</span><span class="p">[</span><span class="s1">'data'</span><span class="p">])</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">data_out</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Data going out from the server should go through this method. It should</span>
|
|||
|
|
<span class="sd"> hand off to the protocol's send method, whatever it's called.</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
<span class="c1"># we assume we have a 'text' outputfunc</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">onMessage</span><span class="p">(</span><span class="n">kwargs</span><span class="p">[</span><span class="s1">'text'</span><span class="p">])</span>
|
|||
|
|
|
|||
|
|
<span class="c1"># 'outputfuncs' are defined as `send_<outputfunc_name>`. From in-code, they are called</span>
|
|||
|
|
<span class="c1"># with `msg(outfunc_name=<data>)`.</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">send_text</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">txt</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Send text, used with e.g. `session.msg(text="foo")`</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
<span class="c1"># we make use of the</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">data_out</span><span class="p">(</span><span class="n">text</span><span class="o">=</span><span class="n">txt</span><span class="p">)</span>
|
|||
|
|
|
|||
|
|
<span class="k">def</span> <span class="nf">send_default</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cmdname</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
|||
|
|
<span class="sd">"""</span>
|
|||
|
|
<span class="sd"> Handles all outputfuncs without an explicit `send_*` method to handle them.</span>
|
|||
|
|
<span class="sd"> """</span>
|
|||
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">data_out</span><span class="p">(</span><span class="o">**</span><span class="p">{</span><span class="n">cmdname</span><span class="p">:</span> <span class="nb">str</span><span class="p">(</span><span class="n">args</span><span class="p">)})</span>
|
|||
|
|
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>The principle here is that the Twisted-specific methods are overridden to redirect inputs/outputs to
|
|||
|
|
the Evennia-specific methods.</p>
|
|||
|
|
<section id="sending-data-out">
|
|||
|
|
<h3>Sending data out<a class="headerlink" href="#sending-data-out" title="Permalink to this headline">¶</a></h3>
|
|||
|
|
<p>To send data out through this protocol, you’d need to get its Session and then you could e.g.</p>
|
|||
|
|
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span> <span class="n">session</span><span class="o">.</span><span class="n">msg</span><span class="p">(</span><span class="n">text</span><span class="o">=</span><span class="s2">"foo"</span><span class="p">)</span>
|
|||
|
|
</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<p>The message will pass through the system such that the sessionhandler will dig out the session and
|
|||
|
|
check if it has a <code class="docutils literal notranslate"><span class="pre">send_text</span></code> method (it has). It will then pass the “foo” into that method, which
|
|||
|
|
in our case means sending “foo” across the network.</p>
|
|||
|
|
</section>
|
|||
|
|
<section id="receiving-data">
|
|||
|
|
<h3>Receiving data<a class="headerlink" href="#receiving-data" title="Permalink to this headline">¶</a></h3>
|
|||
|
|
<p>Just because the protocol is there, does not mean Evennia knows what to do with it. An
|
|||
|
|
<a class="reference internal" href="Inputfuncs.html"><span class="doc std std-doc">Inputfunc</span></a> must exist to receive it. In the case of the <code class="docutils literal notranslate"><span class="pre">text</span></code> input exemplified above,
|
|||
|
|
Evennia alredy handles this input - it will parse it as a Command name followed by its inputs. So
|
|||
|
|
handle that you need to simply add a cmdset with commands on your receiving Session (and/or the
|
|||
|
|
Object/Character it is puppeting). If not you may need to add your own Inputfunc (see the
|
|||
|
|
<a class="reference internal" href="Inputfuncs.html"><span class="doc std std-doc">Inputfunc</span></a> page for how to do this.</p>
|
|||
|
|
<p>These might not be as clear-cut in all protocols, but the principle is there. These four basic
|
|||
|
|
components - however they are accessed - links to the <em>Portal Session</em>, which is the actual common
|
|||
|
|
interface between the different low-level protocols and Evennia.</p>
|
|||
|
|
</section>
|
|||
|
|
</section>
|
|||
|
|
<section id="assorted-notes">
|
|||
|
|
<h2>Assorted notes<a class="headerlink" href="#assorted-notes" title="Permalink to this headline">¶</a></h2>
|
|||
|
|
<p>To take two examples, Evennia supports the <em>telnet</em> protocol as well as <em>webclient</em>, via ajax or
|
|||
|
|
websockets. You’ll find that whereas telnet is a textbook example of a Twisted protocol as seen
|
|||
|
|
above, the ajax protocol looks quite different due to how it interacts with the
|
|||
|
|
webserver through long-polling (comet) style requests. All the necessary parts
|
|||
|
|
mentioned above are still there, but by necessity implemented in very different
|
|||
|
|
ways.</p>
|
|||
|
|
</section>
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
|
|||
|
|
<div class="clearer"></div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<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>
|
|||
|
|
<p><h3><a href="index.html">Table of Contents</a></h3>
|
|||
|
|
<ul>
|
|||
|
|
<li><a class="reference internal" href="#">Custom Protocols</a><ul>
|
|||
|
|
<li><a class="reference internal" href="#adding-custom-protocols">Adding custom Protocols</a></li>
|
|||
|
|
<li><a class="reference internal" href="#writing-your-own-protocol">Writing your own Protocol</a><ul>
|
|||
|
|
<li><a class="reference internal" href="#sending-data-out">Sending data out</a></li>
|
|||
|
|
<li><a class="reference internal" href="#receiving-data">Receiving data</a></li>
|
|||
|
|
</ul>
|
|||
|
|
</li>
|
|||
|
|
<li><a class="reference internal" href="#assorted-notes">Assorted notes</a></li>
|
|||
|
|
</ul>
|
|||
|
|
</li>
|
|||
|
|
</ul>
|
|||
|
|
|
|||
|
|
<div role="note" aria-label="source link">
|
|||
|
|
<!--h3>This Page</h3-->
|
|||
|
|
<ul class="this-page-menu">
|
|||
|
|
<li><a href="_sources/Custom-Protocols.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="http://webchat.freenode.net/?channels=evennia&uio=MT1mYWxzZSY5PXRydWUmMTE9MTk1JjEyPXRydWUbb">IRC</a> -
|
|||
|
|
<a href="https://discord.gg/NecFePw">Discord</a> -
|
|||
|
|
<a href="https://groups.google.com/forum/#%21forum/evennia">Forums</a>
|
|||
|
|
</li>
|
|||
|
|
<li><a href="http://evennia.blogspot.com/">Evennia Dev blog</a> </li>
|
|||
|
|
</ul>
|
|||
|
|
<h3>Versions</h3>
|
|||
|
|
<ul>
|
|||
|
|
<li><a href="../1.0-dev/index.html">1.0-dev (develop branch)</a></li>
|
|||
|
|
<li><a href="Custom-Protocols.html">0.9.5 (v0.9.5 branch)</a></li>
|
|||
|
|
</ul>
|
|||
|
|
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="clearer"></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="nav-item nav-item-0"><a href="index.html">Evennia 0.9.5</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-this"><a href="">Custom Protocols</a></li>
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
<div class="footer" role="contentinfo">
|
|||
|
|
© Copyright 2020, The Evennia developer community.
|
|||
|
|
Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 3.2.1.
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|