From: "Peña, Botp" <botp@...>
Date: 2008-04-03T12:13:18+09:00
Subject: Re: How to use "retry" into two deep begin/rescue/end ?

From: Iñaki Baz Castillo [mailto:ibc@aliax.net] 
# 	loop do
# 		begin  # FIRST BEGIN
# 			puts "welcome"
# 			...
# 			...
# 			begin  # SECOND BEGIN
# 				raise
# 			rescue
# 				puts "ERROR"
# 				retry/break/return/XXXXX  # 
# Restart from FIRST BEGIN (doesn't work)
# 			end
# 			...
# 			...
# 		rescue
# 			$stderr.print "serve(io) ERROR: " + $!
# 		end
# 	end  # loop do
# 
#   end  # def serve(io)


your first begin is anchored on a loop, so you can use retry.

eg,

C:\family\ruby>cat test.rb
loop do
  begin  # FIRST BEGIN
    puts "first welcome"

    begin  # SECOND BEGIN
      raise "triggered ERROR in second begin"
    rescue =>e
      puts "rescuing error: "+e.message
      puts "retrying to first welcome.."
      sleep 1 # put this to slow down
      next    # this goes back to next loop
    end
  rescue
    puts "Error in first welcome"
  end
  puts "this is never executed in this example :)"
end

C:\family\ruby>ruby test.rb
first welcome
rescuing error: triggered ERROR in second begin
retrying to first welcome..
first welcome
rescuing error: triggered ERROR in second begin
retrying to first welcome..
first welcome
rescuing error: triggered ERROR in second begin
retrying to first welcome..
first welcome
rescuing error: triggered ERROR in second begin
retrying to first welcome..
test.rb:10:in `sleep': Interrupt
        from test.rb:10

kind regards -botp