Re: [Boost-users] [ASIO] Resolver question

Subject: Re: [Boost-users] [ASIO] Resolver question
From: james (dirtydroog_at_[hidden])
Date: 2016-02-25 10:40:27

Leading zeros in an IP octet indicate octal.

If you ping 192.168.077.1 from both Linux and Windows you get

> ping 192.168.077.1
PING 192.168.077.1 (192.168.63.1) 56(84) bytes of data.

Note how it converted 077 to 63.

James

On Thu, Feb 25, 2016 at 1:20 PM, Mark R Stallard <stallard_at_[hidden]>
wrote:

> John Davies <john.davies_at_[hidden]> wrote:
>
> > If my address is 192.168.1.112 everything works
> > If my address is 192.168.001.112 it doesn’t work and throws an exception
> > about not finding the host.
> >
> > It’s not a big deal, but it sure took me a long time to track down.
> >
> > Is there some sort of Boost magic I can do to convert the bad address
> > into a good address?
>
> If you still need to remove leading zeroes from the address, consider
> using Boost.Regex (or stdlib regex if you have a C++11 toolset).
>
> The regular expression "\b0+(?=[1-9])" will match one or more leading
> zeroes that precede a non-zero digit. Replace each match with an empty
> string.
>
> |+|  M a r k  |+|
>
>    *Mark Stallard*
>    Business Application Services
>    Global Business Services Information Technology
> * Raytheon Company*
>
>
>
>
>
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