[Xen-devel] Re: [Qemu-devel] vnc port selection

[Anthony Liguori <anthony@xxxxxxxxxxxxx>]

Gerd Hoffmann wrote:
>   Hi folks,
>
> Xen's qemu-dm version has a '-vncunused' command line switch which asks
> the internal vnc server to pick any unused tcp port to listen on.  The
> actual port is communicated to the outside world via xenstore.
>
> I'm looking for a reasonable way to implement that functionality in
> upstream qemu.  First, I think it shouldn't be a separate command line
> switch but an option for the existion -vnc switch.
Maybe something like a to=N option.  So you would have:

-vnc localhost:0,to=10

That would try from displays 0 to 10 and select the first one it could 
attach to.
>   Second, we need a
> way to communicate the port picked which isn't xen-specific.  Obvious
> choice is a monitor info subcommand.
>   
There's already an info vnc.  It can be added to that.

Regards,

Anthony Liguori

> Comments?  Other suggestions?
>
> cheers,
>   Gerd
>
>   
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