Class: Mechanize::Chain::ConnectionResolver

Inherits:
Object
  • Object
show all
Includes:
Handler
Defined in:
lib/mechanize/chain/connection_resolver.rb

Instance Attribute Summary

Attributes included from Handler

#chain

Instance Method Summary collapse

Constructor Details

#initialize(connection_cache, keep_alive, proxy_addr, proxy_port, proxy_user, proxy_pass) ⇒ ConnectionResolver

Returns a new instance of ConnectionResolver.



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# File 'lib/mechanize/chain/connection_resolver.rb', line 6

def initialize( connection_cache,
                keep_alive,
                proxy_addr,
                proxy_port,
                proxy_user,
                proxy_pass )

  @connection_cache = connection_cache
  @keep_alive = keep_alive
  @proxy_addr = proxy_addr
  @proxy_port = proxy_port
  @proxy_user = proxy_user
  @proxy_pass = proxy_pass
end

Instance Method Details

#handle(ctx, params) ⇒ Object 



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# File 'lib/mechanize/chain/connection_resolver.rb', line 21

def handle(ctx, params)
  uri = params[:uri]
  http_obj = nil

  case uri.scheme.downcase
  when 'http', 'https'
    cache_obj = (@connection_cache["#{uri.host}:#{uri.port}"] ||= {
                   :connection         => nil,
                   :keep_alive_options => {},
                 })
    http_obj = cache_obj[:connection]
    if http_obj.nil? || ! http_obj.started?
      http_obj = cache_obj[:connection] =
        Net::HTTP.new( uri.host,
                       uri.port,
                       @proxy_addr,
                       @proxy_port,
                       @proxy_user,
                       @proxy_pass
                       )
      cache_obj[:keep_alive_options] = {}
    end

    # If we're keeping connections alive and the last request time is too
    # long ago, stop the connection.  Or, if the max requests left is 1,
    # reset the connection.
    if @keep_alive && http_obj.started?
      opts = cache_obj[:keep_alive_options]
      if((opts[:timeout] &&
          Time.now.to_i - cache_obj[:last_request_time] > opts[:timeout].to_i) ||
         opts[:max] && opts[:max].to_i == 1)

        Mechanize.log.debug('Finishing stale connection') if Mechanize.log
        http_obj.finish

      end
    end

    cache_obj[:last_request_time] = Time.now.to_i
  when 'file'
    http_obj = Object.new
    class << http_obj
      def started?; true; end
      def request(request, *args, &block)
        response = FileResponse.new(request.uri.path)
        yield response
      end
    end
  end

  http_obj.extend(Mutex_m)
  params[:connection] = http_obj
  super
end