[Boost-users] [asio] negating address_configured

Subject: [Boost-users] [asio] negating address_configured
From: Alexander Lamaison (awl03_at_[hidden])
Date: 2011-03-04 05:48:28

What is the correct way to negate the (default) resolver flag,
address_configured?

On Windows, at least, specifying address_configured (which translates to
AI_ADDRCONFIG) has a nasty side effect.  If the 'external' network is down,
the resolver can no longer resolve the "localhost" address.  More here
http://src.chromium.org/viewvc/chrome/trunk/src/net/base/host_resolver.cc?r1=16212&r2=16211

address_configured is the default flag for ip::basic_resolver_query so I
need to specify a flag that turns it off.  In the underlying addrinfo
struct this would just mean specifying 0 as the flag but that isn't an
option with ASIO as far as I can tell.  How would I do this?

Thanks!

Alex

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