From: Brian Takita <brian.takita@...>
Date: 2005-07-29T11:21:01+09:00
Subject: libcurl and ruby-dl

Hello,

I'm trying to figure out how to use libcurl via ruby-dl.
Here is some good documentation I found about ruby-dl.
http://www.jbrowse.com/text/rdl_en.html

I read _Why's intro to using libcurl at,
http://whytheluckystiff.net/articles/rubyOneEightOh.html, which is an
exciting but shallow introduction.
Right now, I am having trouble setting the url parameter by calling
curl_easy_setopt.

Here is libcurl's documentation that I am trying to grok:
http://curl.mirror.internet.tp/libcurl/c/curl_easy_setopt.html

What I have so far is at the end of this message. Unforunately, my C
knowledge is lacking that I am not confident how to finish this test
script.

Can somebody help me to get a simple request working with libcurl and
Ruby?

Thank you,
Brian Takita

require 'dl/import'
require 'dl/struct'

module Curl
	extend DL::Importable
	dlload "libcurl.dll"

	typealias('CURL', 'void')
	typealias('CURLOPT', 'long')

	extern "CURL *curl_easy_init()"
	extern "char *curl_version()"
	extern "void *curl_version_info(int)"
	extern "void curl_easy_setopt(CURL *, CURLOPT, char *)"
	extern "curl_easy_cleanup(CURL *)"

	VersionInfoData = struct [
		"int age",
		"char *version",
		"uint version_num",
		"char *host",
		"int features",
		"char *ssl_version",
		"long ssl_version_num",
		"char *libz_version",
		"char **protocols"
	]
end

handle = Curl.curl_easy_init

url_param = 0 # I don't know the value
Curl.curl_easy_setopt(handle, url_param, 'http://www.google.com')

# This also fails
# Documentation is at
http://curl.mirror.internet.tp/libcurl/c/curl_easy_cleanup.html
Curl.curl_easy_cleanup(handle)