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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Lua XML-RPC: XML-RPC interface to the Lua programming language</title>
<link rel="stylesheet" href="http://www.keplerproject.org/doc.css" type="text/css"/>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
</head>
<body>
<div id="container">
<div id="product">
<div id="product_logo">
<a href="http://www.keplerproject.org">
<img alt="Lua XML-RPC logo" src="luaxmlrpc.png"/>
</a>
</div>
<div id="product_name"><big><b>Lua XML-RPC</b></big></div>
<div id="product_description">XML-RPC interface to the Lua programming language</div>
</div> <!-- id="product" -->
<div id="main">
<div id="navigation">
<h1>Lua XML-RPC</h1>
<ul>
<li><a href="index.html">Home</a>
<ul>
<li><a href="index.html#overview">Overview</a></li>
<li><a href="index.html#status">Status</a></li>
<li><a href="index.html#download">Download</a></li>
<li><a href="index.html#history">History</a></li>
<li><a href="index.html#credits">Credits</a></li>
<li><a href="index.html#contact">Contact</a></li>
</ul>
</li>
<li><a href="manual.html">Manual</a>
<ul>
<li><a href="manual.html#introduction">Introduction</a></li>
<li><a href="manual.html#installation">Installation</a></li>
<li><a href="manual.html#data_types">Data types</a></li>
<li><a href="manual.html#functions">Library functions</a></li>
<li><a href="manual.html#client">Client side</a></li>
<li><a href="manual.html#server">Server side</a></li>
<li><a href="manual.html#references">References</a></li>
</ul>
</li>
<li><strong>Examples</strong></li>
<li><a href="license.html">License</a></li>
</ul>
</div> <!-- id="navigation" -->
<div id="content">
<h2><a name="examples"></a>Examples</h2>
<h3><a name="client_example"></a>Client example</h3>
<p>Below is a small sample code displaying the use of the library in a
client application.</p>
<pre class="example">
require "xmlrpc.http"
local ok, res = xmlrpc.http.call (
"http://www.oreillynet.com/meerkat/xml-rpc/server.php",
"system.listMethods")
print (ok)
for i, v in pairs(res) do print ('\t', i, v) end
</pre>
<h3><a name="types_example"></a>Type conversion example</h3>
<p>The next example shows how to force the conversion of types from
Lua to XML-RPC.</p>
<pre class="example">
require "xmlrpc"
double_array_type = xmlrpc.newArray ("double")
double_array = xmlrpc.newTypedValue ( { 1.1, 2, 3, 4 }, double_array_type)
double_array_array_type = xmlrpc.newArray (double_array_type)
double_array_array = xmlrpc.newTypedValue (
{
{ 11, 12, 13, },
{ 21, 22, 23, },
{ 31, 32, 33, },
}, double_array_array_type)
</pre>
<p>The table <code>double_array_array</code> will be:</p>
<pre class="example">
<array>
<data>
<value>
<array>
<data>
<value><double>11</double></value>
<value><double>12</double></value>
<value><double>13</double></value>
</data>
</array>
</value>
<value>
<array>
<data>
<value><double>21</double></value>
<value><double>22</double></value>
<value><double>23</double></value>
</data>
</array>
</value>
<value>
<array>
<data>
<value><double>31</double></value>
<value><double>32</double></value>
<value><double>33</double></value>
</data>
</array>
</value>
</data>
</array>
</pre>
<h3><a name="server_example"></a>Server example</h3>
<p>Follows a small example of a server based on Xavante
WSAPI. You can call the service for example with
the <code>xmlrpc</code> tool
from <a href="http://xmlrpc-c.sourceforge.net/">XML-RPC
C</a> (<code>xmlrpc http://localhost:12345
hello_world</code>) or by
using <code>examples/client.lua</code> in the source
tarball.</p>
<pre class="example">
require("xavante")
require("xavante.httpd")
require("wsapi.xavante")
require("wsapi.request")
require("xmlrpc")
--- XML-RPC WSAPI handler
-- @param wsapi_env WSAPI environment
function wsapi_handler(wsapi_env)
local headers = { ["Content-type"] = "text/xml" }
local req = wsapi.request.new(wsapi_env)
local method, arg_table = xmlrpc.srvDecode(req.POST.post_data)
local func = xmlrpc.dispatch(method)
local result = { pcall(func, unpack(arg_table or {})) }
local ok = result[1]
if not ok then
result = { code = 3, message = result[2] }
else
table.remove(result, 1)
if table.getn(result) == 1 then
result = result[1]
end
end
local r = xmlrpc.srvEncode(result, not ok)
headers["Content-length"] = tostring(#r)
local function xmlrpc_reply(wsapienv)
coroutine.yield(r)
end
return 200, headers, coroutine.wrap(xmlrpc_reply)
end
-- XML-RPC exported functions
xmlrpc_exports = {}
--- Get simple string.
-- @return simple string
function xmlrpc_exports.hello_world()
return "Hello World"
end
local rules = {{ match = ".", with = wsapi.xavante.makeHandler(wsapi_handler) }}
local config = { server = {host = "*", port = 12345}, defaultHost = { rules = rules} }
xmlrpc.srvMethods(xmlrpc_exports)
xavante.HTTP(config)
xavante.run()
</pre>
<p>Note that the package <code>post</code> and the function
<code>respond</code> should be provided by the cgi launcher.</p>
</div> <!-- id="content" -->
</div> <!-- id="main" -->
<div id="about">
<p>
<a href="http://validator.w3.org/check?uri=referer">
valid
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</p>
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</body>
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