Rails Net :: SFTP连接超时

Question

我正在尝试从文档中获取Net :: SFTP（ https://github.com/net-ssh/net-sftp ）的命令，这是我的代码：

Net::SFTP.start(*sftp_credentials) { |sftp| 
  sftp.dir.foreach("/") { |entry| 
    puts entry.longname
  }
}

这是我得到的答复：

Net::SSH::ConnectionTimeout: Net::SSH::ConnectionTimeout
    from /Users/regan/.rvm/gems/ruby-2.3.3@scotpac/gems/net-ssh-5.0.2/lib/net/ssh/transport/session.rb:92:in `rescue in initialize'
    from /Users/regan/.rvm/gems/ruby-2.3.3@scotpac/gems/net-ssh-5.0.2/lib/net/ssh/transport/session.rb:60:in `initialize'
    from /Users/regan/.rvm/gems/ruby-2.3.3@scotpac/gems/net-ssh-5.0.2/lib/net/ssh.rb:242:in `new'
    from /Users/regan/.rvm/gems/ruby-2.3.3@scotpac/gems/net-ssh-5.0.2/lib/net/ssh.rb:242:in `start'
    from /Users/regan/.rvm/gems/ruby-2.3.3@scotpac/gems/net-sftp-2.1.2/lib/net/sftp.rb:31:in `start'

有什么问题的想法吗？

Answer 1

原来我尝试连接的服务器上有一个没有列入白名单的防火墙。