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Re: [libvirt] [PATCH v2 2/3] conf: add 'sharePolicy' attribute to graphics element for vnc

On 05/14/2013 05:17 PM, Christophe Fergeau wrote:

On Wed, May 08, 2013 at 01:22:47PM +0800, Guannan Ren wrote:
  -vnc :5900,share=allow-exclusive
allows clients to ask for exclusive access which is
implemented by dropping other connections Connecting
multiple clients in parallel requires all clients asking
for a shared session (vncviewer: -shared switch)

  -vnc :5900,share=force-shared
disables exclusive client access.  Useful for shared
desktop sessions, where you don't want someone forgetting
specify -shared disconnect everybody else.

  -vnc :5900,share=ignore
completely ignores the shared flag and allows everybody
connect unconditionally
rdp seems to support some similar (though they don't look identical)
features through replaceUser/multiUser.

« The replaceUser attribute is a boolean deciding whether multiple
simultaneous connections to the VM are permitted. The multiUser attribute
is a boolean deciding whether the existing connection must be dropped and a
new connection must be established by the VRDP server, when a new client
connects in single connection mode. »

I'm wondering if we should try to use similar attributes for both rdp and
vnc for more consistency?

These vnc server flags need to work together with vnc client flag (like: -Shared for vncviewer) for a certain behaviour, and these flags focus on how to share more than whether to share
     or not.
I don't know more about RDP, it seems that their common behaviours are not quite same
     according to above docs.


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