代理的 Rails 应用程序

Question

我正在实施具有 Facebook API 支持的 Rails 校友应用程序。要求之一是将应用程序中的消息直接发布到 Facebook 墙。一切似乎都工作正常，但是有一个问题我无法解决。当我在大学工作时，我收到错误“无法建立连接，因为目标机器主动拒绝”。这是因为我支持大学代理。我已经做了一些谷歌搜索并尝试了代码中的一些更改，但仍然收到相同的消息。

我能让这项工作成功的唯一方法是非常hacky的。 如果我将 http.rb 类中的方法签名从 更改

def HTTP.new(address, port = nil, p_addr = nil, p_port = nil, p_user = nil, p_pass = nil)
      h = Proxy(p_addr, p_port, p_user, p_pass).newobj(address, port)
      h.instance_eval {
        @newimpl = ::Net::HTTP.version_1_2?
      }
      h
    end

为

def HTTP.new(address, port = nil, p_addr = nil, p_port = nil, p_user = nil, p_pass = nil)
      h = Proxy("proxy.uni.ac.uk", 8080, p_user, p_pass).newobj(address, port)
      h.instance_eval {
        @newimpl = ::Net::HTTP.version_1_2?
      }
      h
    end

使用默认 http.rb 时得到的堆栈跟踪是

c:/ruby/lib/ruby/1.8/net/http.rb:565:in `initialize'
c:/ruby/lib/ruby/1.8/net/http.rb:565:in `open'
c:/ruby/lib/ruby/1.8/net/http.rb:565:in `connect'
c:/ruby/lib/ruby/1.8/timeout.rb:48:in `timeout'
c:/ruby/lib/ruby/1.8/timeout.rb:76:in `timeout'
c:/ruby/lib/ruby/1.8/net/http.rb:565:in `connect'
c:/ruby/lib/ruby/1.8/net/http.rb:558:in `do_start'
c:/ruby/lib/ruby/1.8/net/http.rb:547:in `start'
c:/ruby/lib/ruby/1.8/net/http.rb:404:in `post_form'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/service/net_http_service.rb:4:in `post_form'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/service.rb:78:in `post_form'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/service.rb:66:in `post'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/session.rb:610:in `post_without_logging'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/session.rb:621:in `post'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/logging.rb:20:in `log_fb_api'
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.4/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/logging.rb:20:in `log_fb_api'
c:/ruby/lib/ruby/gems/1.8/gems/facebooker-1.0.54/lib/facebooker/session.rb:620:in `post'

我怎样才能完成这项工作？

Answer 1

如果您的校友应用程序服务器在大学防火墙内运行，请使用 Net::HTTP::Proxy 而不是 Net::HTTP

例如

Net::HTTP::Proxy("proxy.uni.ac.uk",8080).start( 'www.ruby-lang.org', 80 ) do |http|
     print( http.get( '/en/LICENSE.txt' ).body ) 
end

而不是

Net::HTTP.start( 'www.ruby-lang.org',80 ) do |http| 
     print( http.get( '/en/LICENSE.txt' ).body )
end

参考： http://www.ensta.fr/~diam/ruby/online/ruby -doc-stdlib/libdoc/net/http/rdoc/classes/Net/HTTP.html >通过代理访问