Comments on: A curl-ier Curb – better cookie support in Curb

By: Sergi

Sergi — Wed, 27 Oct 2010 17:36:55 +0000

I’ve found a solution to pass cookies from one page to other. Simply after doing the first perform, the next petition should be done with Curl::Easy.perform(2nd URL), no Curl::Easy.new

i.e:

curl = Curl::Easy.new(’1st URL’)
curl.enable_cookies = true
curl.cookiefile = ‘/tmp/cookie.txt’
curl.cookiejar = ‘/tmp/cookie.txt’
curl.http_post(post data)
curl.perform

curl = Curl::Easy.perform(’2nd URL’)

By: Anthony Ettinger

Anthony Ettinger — Sun, 16 May 2010 08:19:52 +0000

I just found this explanation — the cookiejar is NOT written until curl exits — or curl_easy_cleanup is called. I do not see a method to do that in Curb:

http://curl.haxx.se/libcurl/c/curl_easy_cleanup.html

I tried creating a new instance of Curl::Easy, but the script still doesn’t write the file until the curl lib is done.

By: Anthony Ettinger

Anthony Ettinger — Sun, 16 May 2010 08:05:16 +0000

I had this problem earlier with curl…but how do I authenticate (save to cookiejar) and then re-use that cookiejar for subsequent requests?

It seems like the cookiejar isn’t re-used from w/in the same script (2 curb calls) except on the next execute of the script…then it works.

By: Thufir

Thufir — Mon, 01 Feb 2010 01:10:06 +0000

how do you create a cookie as:

You then have to add yourself a cookie (well, it look like Google doesn’t add it itself) with the following properties :
name SID
domain .google.com
path /
expires 1600000000

http://code.google.com/p/pyrfeed/wiki/GoogleReaderAPI

in your example, only the name is set.

By: Chu Yeow

Chu Yeow — Tue, 18 Aug 2009 01:35:48 +0000

@Waseem here’s an example (I actually use something like this in an app):

curl = Curl::Easy.new('http://example.com/login')

# Extract cookies in response.
cookies = []
curl.on_header { |header|

  # Parse cookies from the headers (yes, this is a naive implementation but it's fast).
  cookies << "#{$1}=#{$2}" if header =~ /^Set-Cookie: ([^=])=([^;]+;)/

  header.length
}

# POST to login.
curl.http_post(
  Curl::PostField.content('username', 'foo'),
  Curl::PostField.content('password', 'bar')
)

# Reset the on_header handler.
curl.on_header

# Now you can use the auth cookies in future requests.
curl = Curl::Easy.new('http://example.com/private/page')
curl.cookies = cookies
curl.perform

By: Waseem

Waseem — Mon, 17 Aug 2009 14:59:29 +0000

That is awesome change to curb. Would you please supply some example as how to use this feature of curb? How to authenticate in a cookie-based authentication system?