From: Ezra Zygmuntowicz <ezra@...>
Date: 2005-07-16T01:58:48+09:00
Subject: net/http and begin/end block

Hey list-
     I have the following code that seems to work fine:

require 'net/http'

def fetch(page, section='display', limit=5)
    data = ''
    begin
       data = Net::HTTP.get_response("192.168.0.2", "/#{page}")
    rescue Exception => e
       limit -= 1
       limit > 0 ? retry : raise
    end
    data.body.gsub!(/\/temporaryimages/, "http://192.168.0.2/ 
temporaryimages")
    data.body.gsub!(/\/wrappers\/(\d+)\.news/i, "/page/#{section}/\1")
end

I am using it to fetch some templated web pages from an in house  
server that almost never errors out. So my code works fine. But I am  
wondering if this code will do what I think it should do upon  
failure. Before I added the begin/rescue/end block, the server would  
occasionally error out with a connection reset by peer error. So my  
question is will this syntax work to retry fetching the page 5 times  
before it gives up. Will the rescue Exception => e part catch pretty  
much any type of error?
     Thanks in advance for anyone explaining this to me or offering a  
more robust solution.


-Ezra Zygmuntowicz
Yakima Herald-Republic
WebMaster
509-577-7732
ezra@yakima-herald.com