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Re: [Qemu-devel] [PATCH] add VNC reverse connections

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH] add VNC reverse connections
Date: Wed, 16 Jan 2008 09:00:21 -0600
User-agent: Thunderbird (X11/20071022)

Daniel P. Berrange wrote:
On Tue, Jan 15, 2008 at 11:27:15PM -0800, Eddie Kohler wrote:
Hi all,

This patch against current CVS adds VNC reverse connections, where the server connects actively to a waiting client, as in "-vnc rev:5500" or "-vnc rev:read.cs.ucla.edu:5500". This is quite useful if the user expects to run QEMU many times in succession (for example, is debugging a toy OS), and doesn't want to reopen a VNC client each time.

We already have the ability to pass multiple flags / options to the VNC
driver as a post-fix to the host:port pair, so I'm not a fan of introducing
a new option as a prefix. If using existing options syntax, it could look

  -vnc :5500,rev
  -vnc read.cs.ucla.edu:5500,rev

Yes, but please, let's spell out "reverse". This is a very nice patch to have as it's another way (than -daemonize) to reliably connect to the vnc server after launching a VM.


Anthony Liguori


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