annotate doc/installation.html @ 0:4b915342e2a8

LuaSocket 2.0.2 + CMake build description.
author Eric Wing <ewing . public |-at-| gmail . com>
date Tue, 26 Aug 2008 18:40:01 -0700
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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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2 "http://www.w3.org/TR/html4/strict.dtd">
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3 <html>
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4
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5 <head>
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6 <meta name="description" content="LuaSocket: Introduction to the core">
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7 <meta name="keywords" content="Lua, LuaSocket, TCP, UDP, Network, Support,
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8 Installation">
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9 <title>LuaSocket: Installation</title>
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10 <link rel="stylesheet" href="reference.css" type="text/css">
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11 </head>
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12
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13 <body>
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14
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15 <!-- header +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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16
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17 <div class=header>
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18 <hr>
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19 <center>
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20 <table summary="LuaSocket logo">
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21 <tr><td align=center><a href="http://www.lua.org">
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22 <img width=128 height=128 border=0 alt="LuaSocket" src="luasocket.png">
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23 </a></td></tr>
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24 <tr><td align=center valign=top>Network support for the Lua language
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25 </td></tr>
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26 </table>
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27 <p class=bar>
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28 <a href="home.html">home</a> &middot;
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29 <a href="home.html#download">download</a> &middot;
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30 <a href="installation.html">installation</a> &middot;
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31 <a href="introduction.html">introduction</a> &middot;
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32 <a href="reference.html">reference</a>
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33 </p>
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34 </center>
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35 <hr>
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36 </div>
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37
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38 <!-- installation ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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39
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40 <h2>Installation</h2>
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41
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42 <p> LuaSocket 2.0.2 uses the new package system for Lua 5.1.
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43 All Lua library developers are encouraged to update their libraries so that
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44 all libraries can coexist peacefully and users can benefit from the
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45 standardization and flexibility of the standard.
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46 </p>
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47
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48 <p>
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49 Those stuck with Lua 5.0 will need the
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50 <a href=http://www.keplerproject.org/compat/>compat-5.1</a>
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51 module. It is maintained by
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52 <a href=http://www.keplerproject.org/>The Kepler
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53 Project</a>'s team, and implements the Lua 5.1 package proposal
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54 on top of Lua 5.0. </p>
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55
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56 <p> Here we will only describe the standard distribution.
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57 If the standard doesn't meet your needs, we refer you to the
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58 Lua discussion list, where any question about the package
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59 scheme will likely already have been answered. </p>
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60
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61 <h3>Directory structure</h3>
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62
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63 <p> On Unix systems, the standard distribution uses two base
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64 directories, one for system dependent files, and another for system
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65 independent files. Let's call these directories <tt>&lt;CDIR&gt;</tt>
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66 and <tt>&lt;LDIR&gt;</tt>, respectively.
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67 For instance, in my laptop, I use '<tt>/usr/local/lib/lua/5.0</tt>' for
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68 <tt>&lt;CDIR&gt;</tt> and '<tt>/usr/local/share/lua/5.0</tt>' for
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69 <tt>&lt;LDIR&gt;</tt>. On Windows, sometimes only one directory is used, say
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70 '<tt>c:\program files\lua\5.0</tt>'. Here is the standard LuaSocket
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71 distribution directory structure:</p>
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72
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73 <pre class=example>
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74 &lt;LDIR&gt;/compat-5.1.lua
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75 &lt;LDIR&gt;/ltn12.lua
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76 &lt;LDIR&gt;/socket.lua
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77 &lt;CDIR&gt;/socket/core.dll
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78 &lt;LDIR&gt;/socket/http.lua
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79 &lt;LDIR&gt;/socket/tp.lua
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80 &lt;LDIR&gt;/socket/ftp.lua
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81 &lt;LDIR&gt;/socket/smtp.lua
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82 &lt;LDIR&gt;/socket/url.lua
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83 &lt;LDIR&gt;/mime.lua
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84 &lt;CDIR&gt;/mime/core.dll
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85 </pre>
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86
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87 <p> Naturally, on Unix systems, <tt>core.dll</tt>
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88 would be replaced by <tt>core.so</tt>.
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89 </p>
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90
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91 <p> In order for the interpreter to find all LuaSocket components, three
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92 environment variables need to be set. The first environment variable tells
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93 the interpreter to load the <tt>compat-5.1.lua</tt> module at startup: </p>
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94
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95 <pre class=example>
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96 LUA_INIT=@&lt;LDIR&gt;/compat-5.1.lua
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97 </pre>
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98
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99 <p>
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100 This is only need for Lua&nbsp;5.0! Lua&nbsp;5.1 comes with
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101 the package system built in, of course.
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102 </p>
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103
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104 <p>
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105 The other two environment variables instruct the compatibility module to
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106 look for dynamic libraries and extension modules in the appropriate
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107 directories and with the appropriate filename extensions.
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108 </p>
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109
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110 <pre class=example>
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111 LUA_PATH=&lt;LDIR&gt;/?.lua;?.lua
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112 LUA_CPATH=&lt;CDIR&gt;/?.dll;?.dll
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113 </pre>
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114
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115 <p> Again, naturally, on Unix systems the shared library extension would be
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116 <tt>.so</tt> instead of <tt>.dll</tt>.</p>
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117
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118 <h3>Using LuaSocket</h3>
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119
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120 <p> With the above setup, and an interpreter with shared library support,
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121 it should be easy to use LuaSocket. Just fire the interpreter and use the
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122 <tt>require</tt> function to gain access to whatever module you need:</p>
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123
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124 <pre class=example>
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125 Lua 5.1.2 Copyright (C) 1994-2007 Lua.org, PUC-Rio
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126 &gt; socket = require("socket")
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127 &gt; print(socket._VERSION)
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128 --&gt; LuaSocket 2.0.2
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129 </pre>
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130
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131 <p> Each module loads their dependencies automatically, so you only need to
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132 load the modules you directly depend upon: </p>
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133
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134 <pre class=example>
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135 Lua 5.1.2 Copyright (C) 1994-2007 Lua.org, PUC-Rio
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136 &gt; http = require("socket.http")
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137 &gt; print(http.request("http://www.cs.princeton.edu/~diego/professional/luasocket"))
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138 --&gt; homepage gets dumped to terminal
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139 </pre>
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140
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141 <!-- footer +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
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142
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143 <div class=footer>
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144 <hr>
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145 <center>
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146 <p class=bar>
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147 <a href="home.html">home</a> &middot;
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148 <a href="home.html#down">download</a> &middot;
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149 <a href="installation.html">installation</a> &middot;
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150 <a href="introduction.html">introduction</a> &middot;
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151 <a href="reference.html">reference</a>
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152 </p>
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153 <p>
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154 <small>
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155 Last modified by Diego Nehab on <br>
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156 Thu Apr 20 00:25:30 EDT 2006
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157 </small>
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158 </p>
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159 </center>
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160 </div>
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161
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162 </body>
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163 </html>