Synergy is a very useful piece of software for anybody wanting to share a mouse and keyboard between two networked computers.
Here is the setup I use to:
- encrypt the key presses sent over the network from the synergy client to the server and
- automatically restart the synergy client when it crashes.
First of all, I've got the following
~/.synergy.conf on both of my laptop and desktop machines:
section: screens mylaptop: mydesktop: end section: links mylaptop: right = mydesktop mydesktop: left = mylaptop end section: options keystroke(alt+shift+space) = switchInDirection(left) keystroke(alt+space) = switchInDirection(right) end
With this, I am ready to start the server on my desktop machine:
synergys -a localhost
Now, in order to encrypt the synergy client/server traffic, I create an ssh tunnel between the two machines:
ssh -f -N -L localhost:24800:localhost:24800 mydesktop
Then I start the synergy client on my laptop. However, some recent problems have convinced me to have a more robust alternative to simply starting the client like this:
As recommended by a few helpful people on #debian-devel, I decided to use the
supervise tool (part of the daemontools package) to automatically restart the synergy client if it crashes. Here is how I do it:
supervise ~/.synergyc &
This command refers to a
~/.synergyc directory containing a single
run script. That shell script consists of:
#!/bin/sh xset r rate 500 30 /usr/bin/synergyc --no-daemon localhost
xset call is necessary since
synergyc crashes seem to reset the repeat flag of X for some reason...)
The only problem I still need to fix in my setup is the potential password leak in the next few seconds after the synergy client crashes. Such a crash has already caused me to accidentally type my laptop password into a desktop IRC window the other day
Ideally, I would like the synergy server to swallow the first second or two of keyboard input after its client suddenly drops out. This could eliminate quite a few embarrassing wrong windows.