From: Wes Gamble <weyus@...>
Date: 2006-11-21T02:34:32+09:00
Subject: (Simple?) Why is my rescue clause not catching an exception?

All,

I'm using the Net::HTTP module to fetch resources from the Internet in a 
Rails application.

I have a method that does the HTTP request and this action is enclosed 
in a begin/rescue/end block.  However, when I just did a request and the 
Internet connectivity went down for a second, the call to 
"http.request(req)" failed and I didn't see my rescue block get 
executed.  Instead, it appears that the original exception (from 
timeout.rb) just bubbles all of the way up the stack and my rescue 
doesn't seem to catch it.

Is this because the call to http.request is inside of it's own block and 
I would need to place a rescue clause in there?

Here's the guts of my method:

begin
  if (theURL.instance_of?(URI::HTTP))
    req = Net::HTTP::Get.new(theURL.request_uri())
    res = Net::HTTP.start(theURL.host, theURL.port) {|http|
      http.request(req)
    }
  end
rescue
  raise("Unable to get page - please check the URL")
end

Thanks,
Wes

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