Remote debugging pydbgpproxy dbgp.proxy: No server with key

I decided to try and run a debug proxy so I could run multiple connections to xdebug from KomodoIDE.

That has caused a lot of frustration.

First I copied the dbgpproxy files to the server.

I then hacked php.ini as suggested setting the xdebug.remote_host to localhost/127.0.0.1 so my php.ini looked like this:

xdebug.remote_enable                   = true
xdebug.remote_host                     = 127.0.0.1
xdebug.remote_port                     = 9000
xdebug.remote_handler                  = dbgp
xdebug.remote_log                      = /var/log/xdebug.log
xdebug.remote_mode                     = req

Restarted Apache and then I then ran the proxy like this:

root@home php.ini]# python /root/dbgp/bin/pydbgpproxy -l DEBUG
INFO: dbgp.proxy: starting proxy listeners.  appid: 9795
INFO: dbgp.proxy:     dbgp listener on 127.0.0.1:9000
INFO: dbgp.proxy:     IDE listener on  127.0.0.1:9001

In Komodo I set the Listening port to 'system provided free port'

I set 'I am listening to a proxy' and added the IP and port of the server

But I kept getting errors:

Failed to start the listener socket on port 9001, error: -1 (the debugger proxy could not be contacted.)

If I tried to debug a file like this:

https://192.168.10.1/Test.php?XDEBUG_SESSION_START=users

I would get a proxy error like this:

WARNING: dbgp.proxy: No server with key [users], stopping request

Having tried multiple settings I finally found this page which gave me the clue :

https://confluence.jetbrains.com/display/PhpStorm/Multi-user+debugging+in+PhpStorm+with+Xdebug+and+DBGp+proxy

You have to set the proxy like this.

-i proxyserverExternalIP:port you specify in the proxy settings
-d IP:local debug port on the server (set in php.ini)

e.g.:

python /root/dbgp/bin/pydbgpproxy -d 127.0.0.1:9000 -i 192.168.10.1:9001

And presto ! You can now connect multiple users.