如何使用错误连接到服务器

Question

c:/ruby/lib/ruby/1.8/net/http.rb:560:in `initialize': getaddrinfo: no address a
        from c:/ruby/lib/ruby/1.8/net/http.rb:560:in `open'
        from c:/ruby/lib/ruby/1.8/net/http.rb:560:in `connect'
        from c:/ruby/lib/ruby/1.8/timeout.rb:48:in `timeout'
        from c:/ruby/lib/ruby/1.8/timeout.rb:76:in `timeout'
        from c:/ruby/lib/ruby/1.8/net/http.rb:560:in `connect'
        from c:/ruby/lib/ruby/1.8/net/http.rb:553:in `do_start'
        from c:/ruby/lib/ruby/1.8/net/http.rb:542:in `start'
        from c:/ruby/lib/ruby/1.8/net/http.rb:379:in `get_response'
        from ./run2.rb:23:in `get_streams'
        from ./run2.rb:117:in `search_streams'
        from main.rb:19

我在尝试连接到web服务器时遇到此错误。为甚麽呢？

Answer 1

也许你是在代理服务器后面。getaddrinfo是用来解析DNS请求的--但是错误消息真的是"no address a“吗？

Ruby Documentation of Net::HTTP (带示例)

Answer 2

你张贴的不完整的错误消息很可能是“没有与主机名关联的地址”，这表明你试图连接到的任何地方都无法从你所在的位置访问。既然问题出在from ./run2.rb:23:in 'get_streams'上，你能不能打印出你想要连接的地址，看看你的机器是否真的可以访问它？