mirror of
https://github.com/lunarmodules/luasocket.git
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160 lines
5.0 KiB
HTML
160 lines
5.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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"http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<meta name="description" content="LuaSocket: Introduction to the core">
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<meta name="keywords" content="Lua, LuaSocket, TCP, UDP, Network, Support,
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Installation">
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<title>LuaSocket: Installation</title>
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<link rel="stylesheet" href="reference.css" type="text/css">
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</head>
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<body>
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<!-- header +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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<div class=header>
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<hr>
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<center>
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<table summary="LuaSocket logo">
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<tr><td align=center><a href="http://www.lua.org">
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<img width=128 height=128 border=0 alt="LuaSocket" src="luasocket.png">
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</a></td></tr>
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<tr><td align=center valign=top>Network support for the Lua language
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</td></tr>
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</table>
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<p class=bar>
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<a href="home.html">home</a> ·
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<a href="home.html#download">download</a> ·
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<a href="installation.html">installation</a> ·
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<a href="introduction.html">introduction</a> ·
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<a href="reference.html">reference</a>
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</p>
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</center>
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<hr>
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</div>
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<!-- installation ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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<h2>Instalation</h2>
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<p> LuaSocket 2.0 uses the new package proposal for Lua 5.1.
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All Lua library developers are encouraged to update their libraries so that
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all libraries can coexist peacefully and users can benefit from the
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standardization and flexibility of the standard.
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</p>
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<p>
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The proposal was considered important enough by some of us to justify
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early adoption, even before release of Lua 5.1.
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Thus, a compability module
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<a href=http://www.keplerproject.org/compat/>compat-5.1</a>
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has been released in conjunction with Roberto Ierusalimschy and <a
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href=http://www.keplerproject.org/>The Kepler Project</a> team.
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It implements the Lua 5.1 package proposal on top of Lua 5.0. </p>
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<p> As far as LuaSocket is concerned, this means that whoever is
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deploying a non-standard distribution of LuaSocket will probably
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have no problems customizing it. Here we will only describe the standard distribution. If the standard doesn't meet your
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needs, we refer you to the Lua discussion list, where any question about
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the package scheme will likely already have been answered.
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</p>
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<h3>Directory structure</h3>
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<p> The standard distribution reserves a directory to be the root of
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the libraries installed
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on a given system. Let's call this directory <tt><ROOT></tt>.
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On my system, this is the <tt>/usr/local/share/lua/5.0</tt> directory.
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Here is the standard LuaSocket distribution directory structure:</p>
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<pre class=example>
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<ROOT>/compat-5.1.lua
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<ROOT>/socket.lua
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<ROOT>/lsocket.dll
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<ROOT>/mime.lua
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<ROOT>/lmime.dll
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<ROOT>/ltn12.lua
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<ROOT>/socket/http.lua
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<ROOT>/socket/tp.lua
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<ROOT>/socket/ftp.lua
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<ROOT>/socket/smtp.lua
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<ROOT>/socket/url.lua
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</pre>
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<p> Naturally, on Unix systems, <tt>lsocket.dll</tt> and <tt>lmime.dll</tt>
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would be replaced by <tt>lsocket.so</tt> and <tt>lmime.so</tt>. In Mac OS
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X, they would be replaced by <tt>lsocket.dylib</tt> and
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<tt>lmime.dylib</tt>. </p>
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<p> In order for the interpreter to find all LuaSocket components, three
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environment variables need to be set. The first environment variable tells
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the interpreter to load the <tt>compat-5.1.lua</tt> module at startup: </p>
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<pre class=example>
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LUA_INIT=@<ROOT>/compat-5.1.lua
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</pre>
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<p>
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The other two environment variables instruct the compatibility module to
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look for dynamic libraries and extension modules in the appropriate
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directories and with the appropriate filename extensions.
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</p>
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<pre class=example>
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LUA_PATH=<ROOT>/?.lua;?.lua
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LUA_CPATH=<ROOT>/?.dll;?.dll
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</pre>
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<p> Again, naturally, in Unix the shared library extension would be
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<tt>.so</tt> instead of <tt>.dll</tt> and on Mac OS X it would be
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<tt>.dylib</tt></p>
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<h3>Using LuaSocket</h3>
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<p> With the above setup, and an interpreter with shared library support,
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it should be easy to use LuaSocket. Just fire the interpreter and use the
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<tt>require</tt> function to gain access to whatever module you need:</p>
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<pre class=example>
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Lua 5.0.2 Copyright (C) 1994-2004 Tecgraf, PUC-Rio
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> socket = require("socket")
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> print(socket.VERSION)
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--> LuaSocket 2.0 (beta3)
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</pre>
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<p> Each module loads their dependencies automatically, so you only need to
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load the modues you directly depend upon: <p>
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<pre class=example>
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Lua 5.0.2 Copyright (C) 1994-2004 Tecgraf, PUC-Rio
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> http = require("socket.http")
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> print(http.request("http://www.tecgraf.puc-rio.br/luasocket"))
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--> homepage gets dumped to terminal
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</pre>
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<!-- footer +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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<div class=footer>
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<hr>
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<center>
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<p class=bar>
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<a href="home.html">home</a> ·
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<a href="home.html#down">download</a> ·
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<a href="installation.html">installation</a> ·
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<a href="introduction.html">introduction</a> ·
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<a href="reference.html">reference</a>
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</p>
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<p>
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<small>
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Last modified by Diego Nehab on <br>
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Sun Nov 28 03:19:00 EST 2004
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</small>
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</p>
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</center>
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</div>
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</body>
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</html>
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