libcurl and ruby-dl

[Brian Takita]

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)

 

[Takaaki Tateishi]

Right now, I am having trouble setting the url parameter by calling
curl_easy_setopt.

Please see the following program, in which I use 10002 for CURLOPT_URL.
If you'd like to know why I use 10002, please understand definitions of CINIT and
CURLOPT_URL in curl.h on your own.

Regards,

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

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

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

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

CURLOPT_URL = 10002 # I don't know the value
URL = "http://www.google.com/"
p Curl.curl_easy_setopt(handle, CURLOPT_URL, URL)

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

 

[Brian Takita]

Thank you for submitting a version that works.

Here are the CURLOPT values:

CURLOPT_FILE = 10001
CURLOPT_URL = 10002
CURLOPT_PORT = 10003
CURLOPT_PROXY = 10004
CURLOPT_USERPWD = 10005
CURLOPT_PROXYUSERPWD = 10006
CURLOPT_RANGE = 10007
CURLOPT_INFILE = 10009
CURLOPT_ERRORBUFFER = 10010
CURLOPT_WRITEFUNCTION = 10011
CURLOPT_READFUNCTION = 10012
CURLOPT_TIMEOUT = 10013
CURLOPT_INFILESIZE = 10014
CURLOPT_POSTFIELDS = 10015
CURLOPT_REFERER = 10016
CURLOPT_FTPPORT = 10017
CURLOPT_USERAGENT = 10018
CURLOPT_LOW_SPEED_LIMIT = 10019
CURLOPT_LOW_SPEED_TIME = 10020
CURLOPT_RESUME_FROM = 10021
CURLOPT_COOKIE = 10022
CURLOPT_HTTPHEADER = 10023
CURLOPT_HTTPPOST = 10024
CURLOPT_SSLCERT = 10025
CURLOPT_SSLCERTPASSWD = 10026
CURLOPT_SSLKEYPASSWD = 10026
CURLOPT_CRLF = 10027
CURLOPT_QUOTE = 10028
CURLOPT_WRITEHEADER = 10029
CURLOPT_COOKIEFILE = 10031
CURLOPT_SSLVERSION = 10032
CURLOPT_TIMECONDITION = 10033
CURLOPT_TIMEVALUE = 10034
CURLOPT_CUSTOMREQUEST = 10036
CURLOPT_STDERR = 10037
CURLOPT_POSTQUOTE = 10039
CURLOPT_WRITEINFO = 10040
CURLOPT_VERBOSE = 10048
CURLOPT_FTPAPPEND = 10050
CURLOPT_NETRC = 10051
CURLOPT_FOLLOWLOCATION = 10052
CURLOPT_TRANSFERTEXT = 10054
CURLOPT_PROGRESSFUNCTION = 10056
CURLOPT_PROGRESSDATA = 10057
CURLOPT_AUTOREFERER = 10058
CURLOPT_PROXYPORT = 10059
CURLOPT_POSTFIELDSIZE = 10060
CURLOPT_HTTPPROXYTUNNEL = 10061
CURLOPT_INTERFACE = 10062
CURLOPT_KRB4LEVEL = 10063
CURLOPT_SSL_VERIFYPEER = 10064
CURLOPT_CAINFO = 10065
CURLOPT_MAXREDIRS = 10068
CURLOPT_FILETIME = 10069
CURLOPT_TELNETOPTIONS = 10070
CURLOPT_MAXCONNECTS = 10071
CURLOPT_CLOSEPOLICY = 10072
CURLOPT_FRESH_CONNECT = 10074
CURLOPT_FORBID_REUSE = 10075
CURLOPT_RANDOM_FILE = 10076
CURLOPT_EGDSOCKET = 10077
CURLOPT_CONNECTTIMEOUT = 10078
CURLOPT_HEADERFUNCTION = 10079
CURLOPT_HTTPGET = 10080
CURLOPT_SSL_VERIFYHOST = 10081
CURLOPT_COOKIEJAR = 10082
CURLOPT_SSL_CIPHER_LIST = 10083
CURLOPT_HTTP_VERSION = 10084
CURLOPT_FTP_USE_EPSV = 10085
CURLOPT_SSLCERTTYPE = 10086
CURLOPT_SSLKEY = 10087
CURLOPT_SSLKEYTYPE = 10088
CURLOPT_SSLENGINE = 10089
CURLOPT_SSLENGINE_DEFAULT = 10090
CURLOPT_DNS_USE_GLOBAL_CACHE = 10091
CURLOPT_DNS_CACHE_TIMEOUT = 10092
CURLOPT_PREQUOTE = 10093
CURLOPT_DEBUGFUNCTION = 10094
CURLOPT_DEBUGDATA = 10095
CURLOPT_COOKIESESSION = 10096
CURLOPT_CAPATH = 10097
CURLOPT_BUFFERSIZE = 10098
CURLOPT_NOSIGNAL = 10099
CURLOPT_SHARE = 100100
CURLOPT_PROXYTYPE = 100101
CURLOPT_ENCODING = 100102
CURLOPT_PRIVATE = 100103
CURLOPT_HTTP200ALIASES = 100104
CURLOPT_UNRESTRICTED_AUTH = 100105
CURLOPT_FTP_USE_EPRT = 100106
CURLOPT_HTTPAUTH = 100107
CURLOPT_SSL_CTX_FUNCTION = 100108
CURLOPT_SSL_CTX_DATA = 100109
CURLOPT_FTP_CREATE_MISSING_DIRS = 100110
CURLOPT_PROXYAUTH = 100111
CURLOPT_FTP_RESPONSE_TIMEOUT = 100112
CURLOPT_IPRESOLVE = 100113
CURLOPT_MAXFILESIZE = 100114
CURLOPT_INFILESIZE_LARGE = 100115
CURLOPT_RESUME_FROM_LARGE = 100116
CURLOPT_MAXFILESIZE_LARGE = 100117
CURLOPT_NETRC_FILE = 100118
CURLOPT_FTP_SSL = 100119
CURLOPT_POSTFIELDSIZE_LARGE = 100120
CURLOPT_TCP_NODELAY = 100121
CURLOPT_SOURCE_USERPWD = 100123
CURLOPT_SOURCE_PREQUOTE = 100127
CURLOPT_SOURCE_POSTQUOTE = 100128
CURLOPT_FTPSSLAUTH = 100129
CURLOPT_IOCTLFUNCTION = 100130
CURLOPT_IOCTLDATA = 100131
CURLOPT_SOURCE_URL = 100132
CURLOPT_SOURCE_QUOTE = 100133
CURLOPT_FTP_ACCOUNT = 100134

 

[Brian Takita]

Thank you for submitting a version that works.

Here are the CURLOPT values:

CURLOPT_PORT = 3
CURLOPT_TIMEOUT = 13
CURLOPT_INFILESIZE = 14
CURLOPT_LOW_SPEED_LIMIT = 19
CURLOPT_LOW_SPEED_TIME = 20
CURLOPT_RESUME_FROM = 21
CURLOPT_CRLF = 27
CURLOPT_SSLVERSION = 32
CURLOPT_TIMECONDITION = 33
CURLOPT_TIMEVALUE = 34
CURLOPT_NETRC = 51
CURLOPT_AUTOREFERER = 58
CURLOPT_PROXYPORT = 59
CURLOPT_POSTFIELDSIZE = 60
CURLOPT_HTTPPROXYTUNNEL = 61
CURLOPT_SSL_VERIFYPEER = 64
CURLOPT_MAXREDIRS = 68
CURLOPT_FILETIME = 69
CURLOPT_MAXCONNECTS = 71
CURLOPT_CLOSEPOLICY = 72
CURLOPT_FRESH_CONNECT = 74
CURLOPT_FORBID_REUSE = 75
CURLOPT_CONNECTTIMEOUT = 78
CURLOPT_HTTPGET = 80
CURLOPT_SSL_VERIFYHOST = 81
CURLOPT_HTTP_VERSION = 84
CURLOPT_FTP_USE_EPSV = 85
CURLOPT_SSLENGINE_DEFAULT = 90
CURLOPT_DNS_CACHE_TIMEOUT = 92
CURLOPT_COOKIESESSION = 96
CURLOPT_BUFFERSIZE = 98
CURLOPT_NOSIGNAL = 99
CURLOPT_PROXYTYPE = 101
CURLOPT_UNRESTRICTED_AUTH = 105
CURLOPT_FTP_USE_EPRT = 106
CURLOPT_HTTPAUTH = 107
CURLOPT_FTP_CREATE_MISSING_DIRS = 110
CURLOPT_PROXYAUTH = 111
CURLOPT_FTP_RESPONSE_TIMEOUT = 112
CURLOPT_IPRESOLVE = 113
CURLOPT_MAXFILESIZE = 114
CURLOPT_FTP_SSL = 119
CURLOPT_TCP_NODELAY = 121
CURLOPT_FTPSSLAUTH = 129
CURLOPT_FILE = 10001
CURLOPT_URL = 10002
CURLOPT_PROXY = 10004
CURLOPT_USERPWD = 10005
CURLOPT_PROXYUSERPWD = 10006
CURLOPT_RANGE = 10007
CURLOPT_INFILE = 10009
CURLOPT_ERRORBUFFER = 10010
CURLOPT_POSTFIELDS = 10015
CURLOPT_REFERER = 10016
CURLOPT_FTPPORT = 10017
CURLOPT_USERAGENT = 10018
CURLOPT_COOKIE = 10022
CURLOPT_HTTPHEADER = 10023
CURLOPT_HTTPPOST = 10024
CURLOPT_SSLCERT = 10025
CURLOPT_SSLCERTPASSWD = 10026
CURLOPT_SSLKEYPASSWD = 10026
CURLOPT_QUOTE = 10028
CURLOPT_WRITEHEADER = 10029
CURLOPT_COOKIEFILE = 10031
CURLOPT_CUSTOMREQUEST = 10036
CURLOPT_STDERR = 10037
CURLOPT_POSTQUOTE = 10039
CURLOPT_WRITEINFO = 10040
CURLOPT_PROGRESSDATA = 10057
CURLOPT_INTERFACE = 10062
CURLOPT_KRB4LEVEL = 10063
CURLOPT_CAINFO = 10065
CURLOPT_TELNETOPTIONS = 10070
CURLOPT_RANDOM_FILE = 10076
CURLOPT_EGDSOCKET = 10077
CURLOPT_COOKIEJAR = 10082
CURLOPT_SSL_CIPHER_LIST = 10083
CURLOPT_SSLCERTTYPE = 10086
CURLOPT_SSLKEY = 10087
CURLOPT_SSLKEYTYPE = 10088
CURLOPT_SSLENGINE = 10089
CURLOPT_PREQUOTE = 10093
CURLOPT_DEBUGDATA = 10095
CURLOPT_CAPATH = 10097
CURLOPT_SHARE = 10100
CURLOPT_ENCODING = 10102
CURLOPT_PRIVATE = 10103
CURLOPT_HTTP200ALIASES = 10104
CURLOPT_SSL_CTX_DATA = 10109
CURLOPT_NETRC_FILE = 10118
CURLOPT_SOURCE_USERPWD = 10123
CURLOPT_SOURCE_PREQUOTE = 10127
CURLOPT_SOURCE_POSTQUOTE = 10128
CURLOPT_IOCTLDATA = 10131
CURLOPT_SOURCE_URL = 10132
CURLOPT_SOURCE_QUOTE = 10133
CURLOPT_FTP_ACCOUNT = 10134
CURLOPT_WRITEFUNCTION = 20011
CURLOPT_READFUNCTION = 20012
CURLOPT_PROGRESSFUNCTION = 20056
CURLOPT_HEADERFUNCTION = 20079
CURLOPT_DEBUGFUNCTION = 20094
CURLOPT_SSL_CTX_FUNCTION = 20108
CURLOPT_IOCTLFUNCTION = 20130
CURLOPT_INFILESIZE_LARGE = 30115
CURLOPT_RESUME_FROM_LARGE = 30116
CURLOPT_MAXFILESIZE_LARGE = 30117
CURLOPT_POSTFIELDSIZE_LARGE = 30120

 

[Brian Takita]

The values I submitted from this message's parent are correct.
The values from my first reply (this message's parents first sibling)
are incorrect.

I must also say that the Ruby-DL library is very nice. Thank you for
this project, Mr. Tateishi.