mirror of
https://github.com/lunarmodules/luasocket.git
synced 2024-11-08 06:18:21 +01:00
229 lines
7.3 KiB
HTML
229 lines
7.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
|
|
"http://www.w3.org/TR/html4/strict.dtd">
|
|
<html>
|
|
|
|
<head>
|
|
<title>LuaSocket: Network support for the Lua language </title>
|
|
<link rel="stylesheet" href="reference.css" type="text/css">
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<!-- header +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<div class=header>
|
|
<hr>
|
|
<center>
|
|
<table summary="LuaSocket logo">
|
|
<tr><td align=center><a href="http://www.lua.org">
|
|
<img border=0 alt="LuaSocket" src="luasocket.png">
|
|
</a></td></tr>
|
|
<tr><td align=center valign=top>Network support for the Lua language
|
|
</td></tr>
|
|
</table>
|
|
<p class=bar>
|
|
<a href="home.html">home</a> ·
|
|
<a href="home.html#download">download</a> ·
|
|
<a href="introduction.html">introduction</a> ·
|
|
<a href="reference.html">reference</a>
|
|
</p>
|
|
</center>
|
|
<hr>
|
|
</div>
|
|
|
|
<!-- whatis +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h2 id=whatis>What is LuaSocket?</h2>
|
|
|
|
<p>
|
|
LuaSocket is a <a href="http://www.lua.org">Lua</a> extension library
|
|
that is composed by two parts: a C layer that provides support for the TCP
|
|
and UDP transport layers, and a set of Lua modules that add support for
|
|
the SMTP (sending e-mails), HTTP (WWW access) and FTP (uploading and
|
|
downloading files) protocols and other functionality commonly needed by
|
|
applications that deal with the Internet.
|
|
</p>
|
|
|
|
<p>
|
|
Network support has been implemented so that it is both efficient and
|
|
simple to use. LuaSocket can be used by any Lua application once it has
|
|
been properly linked with and initialized by the interpreter running the
|
|
Lua application. The code has been tested and runs well on several Windows
|
|
and Unix platforms.
|
|
</p>
|
|
|
|
<p>
|
|
The library is available under the same
|
|
<a href="http://www.lua.org/copyright.html">
|
|
terms and conditions</a> as the Lua language, the MIT license. The idea is
|
|
that if you can use Lua in a project, you should also be able to use
|
|
LuaSocket.
|
|
</p>
|
|
|
|
<p>
|
|
Copyright © 1999-2003 Tecgraf/PUC-Rio. All rights reserved. <br>
|
|
Author: <A href="http://www.cs.princeton.edu/~diego">Diego Nehab</a>
|
|
</p>
|
|
|
|
<!-- download +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h2 id=download>Download</h2>
|
|
|
|
<p>
|
|
LuaSocket version 2.0 alpha is now available for download! It is
|
|
compatible with Lua 5.0 and has been tested on
|
|
Windows XP, Linux, and Mac OS X.
|
|
</p>
|
|
|
|
<p>
|
|
The library can be downloaded in source code from the following links:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>
|
|
<a href="luasocket-2.0-alpha.tar.gz">luasocket-2.0-alpha.tar.gz</a> <br>
|
|
<a href="luasocket-2.0-alpha.zip">luasocket-2.0-alpha.zip</a>
|
|
</p>
|
|
</blockquote>
|
|
|
|
<p>
|
|
Besides the full C and Lua source code for the library, the distribution
|
|
contains several examples, this user's manual and the test procedures.
|
|
</p>
|
|
|
|
<p>
|
|
I am also providing a Windows binary for those that want to give
|
|
LuaSocket a quick try:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>
|
|
<a href="luasocket-2.0.exe">luasocket-2.0.exe</a>
|
|
</p>
|
|
</blockquote>
|
|
|
|
<p>
|
|
This binary has been compiled with the <tt>LUASOCKET_DEBUG</tt>
|
|
option, and should be able to run the automatic test procedures.
|
|
</p>
|
|
|
|
<!-- thanks +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h2 id=thanks>Special thanks</h2>
|
|
|
|
<p>
|
|
Throughout LuaSocket its history, many people gave sugestions that helped
|
|
improve it. For that, I thank the Lua comunity.
|
|
Special thanks go to
|
|
David Burgess, who has pushed the library to a new level of quality and
|
|
from whom I have learned a lot stuff that doesn't show up in RFCs.
|
|
Special thanks also to Carlos Cassino, who played a big part in the
|
|
extensible design seen in the C core of LuaSocket 2.0.
|
|
</p>
|
|
|
|
<!-- whatsnew +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h2 id=new>What's New</h2>
|
|
|
|
|
|
<p>
|
|
Most of the changes for 2.0 happened in the C layer, which
|
|
has been almost completely rewritten. The code has been ported to Lua 5.0
|
|
and greatly improved. There have also been some API changes
|
|
that made the interface simpler and more consistent. Here are some of
|
|
the changes that made it into version 2.0:
|
|
</p>
|
|
|
|
<ul>
|
|
<li> Major C code rewrite. Code is modular and extensible. Hopefully, next
|
|
versions will include code for local domain sockets, file descriptors,
|
|
pipes (on Unix) and named pipes (on windows) as a bonus;
|
|
|
|
<li> Following the Lua 5.0 trend, all functions provided by the library are
|
|
in the namespace <tt>socket</tt>. Functions such as
|
|
send/receive/timeout/close etc do not exist anymore as stand-alone
|
|
functions. They are now only available as methods of the appropriate
|
|
objects;
|
|
|
|
<li> All functions return a non-nil value as first return value if successful.
|
|
All functions return whatever could be retrieved followed by error message
|
|
in case of error. The best way to check for errors is to check for the
|
|
presence of an error message;
|
|
|
|
<li> UDP connected sockets can break association with peer by calling
|
|
<tt>setpeername</tt> with address '<tt>*</tt>';
|
|
|
|
<li> TCP has been changed to become more uniform. First create an object,
|
|
then connect or bind if needed, and finally use I/O functions. The
|
|
<tt>socket.connect</tt> and <tt>socket.bind</tt> functions are still
|
|
provided for simplicity, but they just call <tt>socket.tcp</tt> followed
|
|
by the <tt>connect</tt> or <tt>bind</tt> methods;
|
|
|
|
<li> Better error messages and parameter checking;
|
|
|
|
<li> <tt>socket.sleep</tt> and <tt>socket.time</tt> are now part of the
|
|
library and are supported. They used to be available only when
|
|
LUASOCKET_DEBUG was defined, but it turns out they might be useful for
|
|
applications;
|
|
|
|
<li> Socket options interface has been improved and TCP objects also
|
|
support socket options.
|
|
|
|
</ul>
|
|
|
|
<!-- incompatible +++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h3 id=incompatible>Incompatibilities with previous versions</h3>
|
|
|
|
<ul>
|
|
<li> The introduction of namespaces affects all programs that use LuaSocket,
|
|
specially code that relies on global functions. These are no longer
|
|
available. Note that even the support modules (<tt>http</tt>, <tt>smtp</tt>
|
|
etc) have been moved to the namespace (i.e. <tt>socket.http</tt>,
|
|
<tt>socket.smtp</tt> etc);
|
|
|
|
<li> WARNING: The new <tt>send</tt>,
|
|
<tt>sendto</tt>, <tt>setpeername</tt> and <tt>setsockname</tt>,
|
|
<tt>ftp.put</tt>, <tt>ftp.put_cb</tt> return convention WILL break old code;
|
|
|
|
<li> Interface to options has changed;
|
|
|
|
<li> <tt>socket.select</tt> refuses tables that have anything that is not
|
|
an object from the group <tt>select{able}</tt>. This includes even the
|
|
'<tt>n</tt>' field. Silently ignoring objects was a source of bugs for Lua
|
|
programs.
|
|
</ul>
|
|
|
|
<!-- old ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<h2 id=old>Old Versions</h2>
|
|
|
|
<p>
|
|
All previous versions of the LuaSocket library can be downloaded
|
|
<a href="http://www.tecgraf.puc-rio.br/luasocket/old">here</a>. Although
|
|
these versions are no longer supported, they are still available for
|
|
those that have compatibility issues.
|
|
</p>
|
|
|
|
<!-- footer +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
<div class=footer>
|
|
<hr>
|
|
<center>
|
|
<p class=bar>
|
|
<a href="home.html#down">download</a> ·
|
|
<a href="introduction.html">introduction</a> ·
|
|
<a href="reference.html">reference</a>
|
|
</p>
|
|
<p>
|
|
<small>
|
|
Last modified by Diego Nehab on <br>
|
|
Sun Aug 10 01:36:26 PDT 2003
|
|
</small>
|
|
</p>
|
|
</center>
|
|
</div>
|
|
|
|
</body>
|
|
</html>
|