Rails Net :: SFTP連接超時

Question

我正在嘗試從文檔中獲取Net :: SFTP（ https://github.com/net-ssh/net-sftp ）的命令，這是我的代碼：

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

這是我得到的答復：

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'

有什么問題的想法嗎？

Answer 1

原來我嘗試連接的服務器上有一個沒有列入白名單的防火牆。