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Asyncio Python library for connecting to and controlling the Logitech Harmony

Project description

Python library for programmatically using a Logitech Harmony Link or Ultimate Hub.

This library originated from iandday/pyharmony which was a fork of bkanuka/pyharmony with the intent to:

  • Make the harmony library asyncio
  • Ability to provide one’s own custom callbacks to be called
  • Automatic reconnect, even if re-connection cannot be established for a time
  • More easily get the HUB configuration through API call
  • Additional callbacks: connect, disconnect, HUB configuration updated
  • Using unique msgid’s ensuring that responses from the HUB are correctly managed.


As the harmony protocol is being worked out, notes will be in Currently it is using web sockets due to a change by Logitech. Logitech has informed they will re-open XMPP sometime in January/2019. Once re-opened this library will be moved to use XMPP.


  • Retrieving current activity
  • Querying for entire device information
  • Querying for activity information only
  • Querying for current activity
  • Starting Activity
  • Sending Command
  • Changing channels
  • Custom callbacks.


aioharmony - Harmony device control

usage: aioharmony [-h] (--harmony_ip HARMONY_IP | --discover)
                  [--harmony_port HARMONY_PORT]
                  [--loglevel {DEBUG,INFO,WARNING,ERROR,CRITICAL}]
                  [--show_responses | --no-show_responses] [--wait WAIT]

aioharmony - Harmony device control

positional arguments:
    show_config         Print the Harmony device configuration.
                        Print the detailed Harmony device configuration.
                        Print the current activity config.
    start_activity      Switch to a different activity.
    power_off           Stop the activity.
    sync                Sync the harmony.
    listen              Output everything HUB sends out
    send_command        Send a simple command.
    change_channel      Change the channel

optional arguments:
  -h, --help            show this help message and exit
  --harmony_ip HARMONY_IP
                        IP Address of the Harmony device. (default: None)
  --discover            Scan for Harmony devices. (default: False)
  --harmony_port HARMONY_PORT
                        Network port that the Harmony is listening on.
                        (default: 5222)
                        Logging level for all components to print to the
                        console. (default: INFO)
  --show_responses      Print out responses coming from HUB. (default: False)
  --no-show_responses   Do not print responses coming from HUB. (default:
  --wait WAIT           How long to wait in seconds after completion, useful
                        in combination with --show-responses. Use -1 to wait
                        infinite, otherwise has to be a positive number.
                        (default: 0)

Release Notes

0.1.0. Initial Release

0.1.2. Fixed:
  • Enable callback connect only once initial connect and initialization is completed.
  • Fix exception when activity/device name/id is None when trying to retrieve name/id.
  • Fixed content type and name of README in
0.1.3. Fixed:
  • Retry connect on reconnect
0.1.4. Fixed:
  • Exception when retrieve_hub_info failed to retrieve information
  • call_callback helper would never return True on success.
  • Retry connect on reconnect (was not awaited upon)
0.1.5. Fixed:
  • Exception when an invalid command was sent to HUB (or sending command failed on HUB).
  • Messages for failed commands were not printed in main.
0.1.6. Fixed:
  • Ignore response code 200 when for sending commands
  • Upon reconnect, errors will be logged on 1st try only, any subsequent retry until connection is successful will only provide DEBUG log entries.
0.1.7. Fixed:
  • Fix traceback if no configuration retrieved or items missing from configuration (i.e. no activities)
  • Retrieve current activity only after retrieving configuration
0.1.8. Fixed:
  • Fix traceback if HUB info is not received.
  • Fix for new HUB version 4.15.250. (Thanks to reneboer for providing the quick fix).
NOTE: This version will ONLY work with 4.15.250 or potentially higher. It will not work with lower versions!
0.1.9. Fixed:
  • Fixed “Network unreachable” or “Host unreachable” on certain installations (i.e. in Docker, HassIO)
0.1.10. Changed:
  • On reconnect the wait time will now start at 1 seconds and double every time with a maximum of 30 seconds.
  • Reconnect sometimes might not work if request to close was received over web socket but it never was closed.


  • Redo discovery for asyncio. This will be done once XMPP is re-implemented by Logitech
  • More items can be done from the Harmony iOS app; determining what could be done within the library as well
  • Is it possible to update device configuration?

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