module Pod::HTTP

Handles HTTP requests

Constants

MAX_HTTP_REDIRECTS
USER_AGENT

Public Class Methods

get_actual_url(url, user_agent = nil) click to toggle source

Resolve potential redirects and return the final URL.

@return [string]

# File lib/cocoapods-core/http.rb, line 11
def self.get_actual_url(url, user_agent = nil)
  redirects = 0

  loop do
    response = perform_head_request(url, user_agent)

    if [301, 302, 303, 307, 308].include? response.status_code
      location = response.headers['location'].first

      if location =~ %r{://}
        url = location
      else
        url = URI.join(url, location).to_s
      end

      redirects += 1
    else
      break
    end

    break unless redirects < MAX_HTTP_REDIRECTS
  end

  url
end
validate_url(url, user_agent = nil) click to toggle source

Performs validation of a URL

@return [REST::response]

# File lib/cocoapods-core/http.rb, line 41
def self.validate_url(url, user_agent = nil)
  return nil unless url =~ /^#{URI.regexp}$/

  begin
    url = get_actual_url(url, user_agent)
    resp = perform_head_request(url, user_agent)
  rescue SocketError, URI::InvalidURIError, REST::Error, REST::Error::Connection
    resp = nil
  end

  resp
end

Private Class Methods

perform_head_request(url, user_agent) click to toggle source

Does a HEAD request and in case of any errors a GET request

@return [REST::response]

# File lib/cocoapods-core/http.rb, line 62
def self.perform_head_request(url, user_agent)
  require 'rest'

  user_agent ||= USER_AGENT

  resp = ::REST.head(url, 'User-Agent' => user_agent)

  if resp.status_code >= 400
    resp = ::REST.get(url, 'User-Agent' => user_agent,
                           'Range' => 'bytes=0-0')

    if resp.status_code >= 400
      resp = ::REST.get(url, 'User-Agent' => user_agent)
    end
  end

  resp
end