SocketError when using http_response_code

[Bryan Ricker]

I'm trying to monitor nginx, partly by checking for 502, 503, and 504 errors, with this bit of code:

    on.condition(:http_response_code) do |c|

      c.host     = "website.org"

      c.path     = "/"

      c.code_is  = [502, 503, 504]

      c.times    = [2, 5]

    end

However, I'm getting this in the output every time it checks:

http response nominal [SocketError, SocketError, SocketError, SocketError, SocketError] (HttpResponseCode)

I understand that this probably means that the server can't make outgoing requests. Is there a way to fix or get around this?

-Bryan