# File lib/www/mechanize/chain/header_resolver.rb, line 6
 6:         def initialize(keep_alive, keep_alive_time, cookie_jar, user_agent)
 7:           @keep_alive = keep_alive
 8:           @keep_alive_time = keep_alive_time
 9:           @cookie_jar = cookie_jar
10:           @user_agent = user_agent
11:         end

    # File lib/www/mechanize/chain/header_resolver.rb, line 13
13:         def handle(ctx, params)
14:           uri = params[:uri]
15:           referer = params[:referer]
16:           request = params[:request]
17: 
18:           if @keep_alive
19:             request['Connection'] = 'keep-alive'
20:             request['Keep-Alive'] = @keep_alive_time.to_s
21:           else
22:             request['Connection'] = 'close'
23:           end
24:           request['Accept-Encoding'] = 'gzip,identity'
25:           request['Accept-Language'] = 'en-us,en;q=0.5'
26:           host = "#{uri.host}#{[80, 443].include?(uri.port.to_i) ? '' : ':' + uri.port.to_s}"
27:           request['Host'] = host
28:           request['Accept-Charset'] = 'ISO-8859-1,utf-8;q=0.7,*;q=0.7'
29:   
30:           unless @cookie_jar.empty?(uri)
31:             cookies = @cookie_jar.cookies(uri)
32:             cookie = cookies.length > 0 ? cookies.join("; ") : nil
33:             request.add_field('Cookie', cookie)
34:           end
35:   
36:           # Add Referer header to request
37:           if referer && referer.uri
38:             request['Referer'] = referer.uri.to_s
39:           end
40:   
41:           # Add User-Agent header to request
42:           request['User-Agent'] = @user_agent if @user_agent 
43:           super
44:         end