SPICE 虛擬機連線方式如何設定可同時多人連線

Multiple Clients Summary

Support multiple concurrent connections to a single spice server.
Owner

Alon Levy and Yonit Halperin
Current Status

Targeted Release: spice-0.10
Experimental status, see below to enable.
Description

This feature is still experimental, it is not expected to work correctly under different client bandwidths, although it should not crash the server.

To enable:

export SPICE_DEBUG_ALLOW_MC=1
Then launch qemu vm as usual.

The stdout will contain an additional line:

spice: allowing multiple client connections
You can then launch clients as usual. A second client connection will not disconnect any of the previous clients. There is no set limit. The behavior of each channel in multiple client mode:

inputs – shared. All clients can supply mouse and keyboard.
display – shared. All clients receive display updates.
cursor – shared. All clients receive cursor updates.
playback – first connection after no connections. To do: make it shared.
record – first connection after no connections. To do: make it shared.
smartcard – first connection after no connections. To do: make it shared.
usbredir – first connection after no connections. To do: make it shared.
agent – ?
NB: The main channel is not on that list because it isn’t a user visible channel. Every client has it’s own main connection.

NB: First connection after no connections: To receive this channel you will have to connect after explicitly disconnecting all the previous clients. Otherwise you will easily reach a situation where none of the clients have any of those channels:

connect A
connect B (while A is connected)
disconnect A (B is still connected)
connect C
Now both B and C only have {inputs,display,cursor}, no one has any other (playback,cursor,smartcard) connection. Specifically, the server didn’t advertise those channels to clients B and C.

MultipleClientsImplementationNotes contains old design notes, not all implemented. To do: pick up notable notes from there over here.

Category: ProposedFeatures

from:http://www.spice-space.org/page/Features/MultipleClients

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