Working with bi-directional communications
We can easily add a few lines of code to publish a message to the same channel in which we are receiving messages to indicate that the command has been successfully processed. We will use our previous example as a baseline and we will create a new version of the
MessageChannel class. The code file was
iot_python_chapter_09_02.py. Don't forget to replace the strings assigned to the
subscribe_key local variables in the
__init__ method with the values you have retrieved from the previously explained PubNub key generation process. The following lines show the new version of the
MessageChannel class that publishes a message after a command has been successfully processed. The code file for ...