HOWTO: python remote debugging in Komodo IDE

workstation: windows; Komodo IDE; PuTTY

server: linux (it can have paranoid firewall rules - all you need is SSH access)

1. download debugger from http://aspn.activestate.com/ASPN/Downloads/Komodo/RemoteDebugging

   $ wget "http://downloads.activestate.com/Komodo/releases/5.2.4/remotedebugging/Komodo-PythonRemoteDebugging-5.2.4-37659-linux-x86_64.tar.gz"
   $ tar -xvf Komodo-PythonRemoteDebugging-5.2.4-37659-linux-x86_64.tar.gz
   $ cd Komodo-PythonRemoteDebugging-5.2.4-37659-linux-x86_64
   

2. copy dbgp to $PYTHONPATH or add it to PYTHONPATH

   $ cp -R dbgp/ /local/modules/

   copy debugger bin/* someshere to PATH

   $ cp bin/* ~/bin

   (why ActiveState do not provide setup.py?)
3. Setup tunnel between workstation and server
   putty: Connection > SSH > Tunnels
   R9000 -> 127.0.0.1:9000
   "R" mean that putty will send everything send to server port 9000 to workstation port 9000
4. Run Komodo IDE
   Edit > Preferences > Debugging > Connection
   (x) a specific port [ 9000 ]
   Enshure "Debugger > Listen for Debugging connections" is checked
   
5. on server run debugger test

   pydbgp -d 127.0.0.1:9000 test.py

6. Komodo will alert about incoming debug connection
   Also, it will say it have no uri-mapping
   Add mapping between local and remote work copies

In case if workstation run linux or macosx tunnel on step (4) should be done using native *nix utils.
Komodo itself is available for all platforms, so other steps do not change.

Server can run scripts under mod_python or mod_wsgi. To set software break-point use:

from dbgp.client import brk
brk(host='127.0.0.1', port=9000)

To manage uncaught exceptions:

from dbgp.client import brkOnExcept
brkOnExcept(host='127.0.0.1', port=9000)

More info: Remote Debugging in Komodo IDE, Debugging Python in Komodo IDE.

PS. Happy debugging!

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