curb by taf2

Dependencies

libcurl

Examples

Simple fetch via HTTP:

c = Curl::Easy.perform("http://www.google.co.uk")
puts c.body_str

Same thing, more manual

c = Curl::Easy.new("http://www.google.co.uk")
c.perform
puts c.body_str

Additional config

Curl::Easy.perform("http://www.google.co.uk") do |curl| 
  curl.headers["User-Agent"] = "myapp-0.0"
  curl.verbose = true
end

Same thing, more manual

c = Curl::Easy.new("http://www.google.co.uk") do |curl| 
  curl.headers["User-Agent"] = "myapp-0.0"
  curl.verbose = true
end

c.perform

Supplying custom handlers

c = Curl::Easy.new("http://www.google.co.uk")

c.on_body { |data| print(data) }
c.on_header { |data| print(data) }

c.perform

Reusing Curls

c = Curl::Easy.new

["http://www.google.co.uk", "http://www.ruby-lang.org/"].map do |url|
  c.url = url
  c.perform
  c.body_str
end

HTTP POST form

c = Curl::Easy.http_post("http://my.rails.box/thing/create",
                         Curl::PostField.content('thing[name]', 'box',
                         Curl::PostField.content('thing[type]', 'storage')

HTTP POST file upload

c = Curl::Easy.new("http://my.rails.box/files/upload")
c.multipart_form_post = true
c.http_post(Curl::PostField.file('myfile.rb'))

Multi Interface (Basic)

make multiple GET requests

easy_options = {:follow_location => true}
multi_options = {:pipeline => true}

Curl::Multi.get('url1','url2','url3','url4','url5', easy_options, multi_options) do|easy|
  # do something interesting with the easy response
  puts easy.last_effective_url
end

make multiple POST requests

easy_options = {:follow_location => true, :multipart_form_post => true}
multi_options = {:pipeline => true}

url_fields = [
  { :url => 'url1', :post_fields => {'f1' => 'v1'} },
  { :url => 'url2', :post_fields => {'f1' => 'v1'} },
  { :url => 'url3', :post_fields => {'f1' => 'v1'} }
]

Curl::Multi.post(url_fields, easy_options, multi_options) do|easy|
  # do something interesting with the easy response
  puts easy.last_effective_url
end

Multi Interface (Advanced)

responses = {}
requests = ["http://www.google.co.uk/", "http://www.ruby-lang.org/"]
m = Curl::Multi.new
# add a few easy handles
requests.each do |url|
  responses[url] = ""
  c = Curl::Easy.new(url) do|curl|
    curl.follow_location = true
    curl.on_body{|data| responses[url] << data; data.size }
  end
  m.add(c)
end

m.perform do
  puts "idling... can do some work here, including add new requests"
end

requests.each do|url|
  puts responses[url]
end

Install

gem install taf2-curb

Authors

• Ross Bamford
• Todd A. Fisher

Contributors

• brycethornton
• Cheah Chu Yeow
• mobileAgent
• Ian MacLeod
• Ilya Grigorik
• Jeff Whitmire
• Matthew Beale
• Phi.Sanders
• Phillip Toland

Contact

taf2 via github.com

Download

You can download this project in either zip or tar formats.

You can also clone the project with Git by running:

$ git clone git://github.com/taf2/curb