[ruby-talk:03217] Re: Retrieving the hostname and port in net/http

Dave Thomas <[e-mail]> writes:

> Minero Aoki <[e-mail]> writes:
> 
> > Hi,
> > 
> >   In mail "[ruby-talk:03161] Re: Retrieving the hostname and port in net/http"
> >     Dave Thomas <[e-mail]> wrote:
> > 
> > > One of the problems is that HTTP#get throws an exception on a 301, so
> > > there's no resp structure to interrogate.
> > 
> > Yes, that's right. I agree that "get" method is OUT OF USE for
> > many applications. I want to make "get" not to raise exceptions,
> > but I could not because of backward compatibility.
> > If it is not too rate, I'll change it.
> 
> Either that, or possibly include the header information in the
> exception.

And, just to show how responsive the Ruby developers are, less than 24
hours later, Minero Aoki checks in to the CVS tree a new net/http that 
does just that (and in doing so gives us a reason to use the 'retry'
feature of Ruby exceptions):

     require 'net/http'

     h = Net::HTTP.new(ARGV[0] || 'www.ruby-lang.org', 80)

     url = ARGV[1] || '/'
     
     begin

       puts "Fetching #{url}"
       resp, data = h.get(url, nil)
       puts data

     rescue Net::ProtoRetriableError => detail

       head = detail.data
       if head.code == "301"
         puts "Need to retry"
         url = head['location']
         url =~ %r{^http://([^/]+)(.*)}
         host = $1
         url = $2
         port = 80
         
         if host =~ /(.*):(\d+)/
           host = $1
           post = $2
         end
         
         h.finish
         h = Net::HTTP.new(host, port)

         retry          # Back, Jack, and do it again!
       end
     end


Regards


Dave