Ruby on Rails

I have the following in a controller method:

begin
response = Net::HTTP.post_form(URI.parse(File.join(@site.url, 'scan_folder.json')), {inlay_key: @site.key})
@response = JSON.parse(response.body.to_s)['remote']
@response_type = 'success'
@site.tested_client = true
@site.save
rescue
@response = 'Could not locate Inlay Client.'
@response_type = 'error'
end

And it seems to work very well. But I have a test site that it is not finding. When I comment out the rescue portion, the error I get indicates that the host could not be found. I have tried adding a line to the hosts file (the way you would on a Mac to do fake DNS for a development site) and this too appears to be ignored completely. The Rails server is running on Ubuntu 14, with all the latest patches, and I even tried rebooting the entire server to get any caches to clear. Dig on the server is able to find the test machine, but Net::HTTP on the same server cannot.

Can anyone offer a direction to start looking? Are there configurations that I could be doing to ensure that lookup is exhaustive before giving up?

Thanks,

Walter

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