default tcp host

[Daniel P. Berrange]

On Wed, Jun 13, 2007 at 03:51:35PM -0400, Havoc Pennington wrote:
> Right now if you dbus_server_listen("tcp:port=0") it listens on localhost.
> 
> But there's no way right now to listen on INADDR_ANY (all local interfaces).
> 
> If we made a missing host= mean INADDR_ANY instead of localhost, there 
> would be a problem however; the DBusServer would not have any way to 
> report its own address. (Right? I'm not exactly an expert here.)

Actually it would - just report it as  '0.0.0.0' or '::'  as appropriate
for the protocol it ended up listening on. You can quite happily also
call connect() on '0.0.0.0' or '::' AFAICT - it'll just connect to anything
listening on that port.

> So here is a proposal, that we add to the tcp: address format the flag
>    all_interfaces=true|false
> 
> Which would mean to bind to INADDR_ANY (I believe that is equivalent to 
> not binding at all, just listen()).
> 
> The host= field would continue to default to localhost if missing, and 
> will be the host the server will report if asked for its address.

I think this needs to change to reflect the actual address listened
on - as per above - fun escaping '::' if its a IPv6 address since we
use ':' as a field separator too :-( Do we already have a scheme for
escaping ':' in addresses ?

Regards,
Dan.
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