How to set iot Hub (or AzFunction) to send message to a IOT edge input route?

Question

I'm trying to send C2D messages using Azure,

however, I can’t get all the information in the Microsoft Documentation (and internet in general) on "How to send message from the cloud to an IOT-EDGE module input ?" I have already found some bits of answer, but I can’t find this last piece of information.

step 1 send message :

I found a bunch of good examples and sample explaining how to send C2D message to a regular IOT device. but none on an edge one? Is it even possible ?

step 2 receiver:

I have an IOT-Edge custom module that have an output to the "$upstream". For the input I tried :

"FROM $upstream INTO BrokeredEndpoint(\"/modules/edgeModule/inputs/input1\")" and as expected it doesn’t work.

Do you have any leads ?

thanks.

PS: English is not my native language, Sorry for the mistakes if found any.

Answer 1

IoT Edge modules can only receive Direct Method calls but not async Cloud-to-device messages. You can find examples how to implement the DM calls for instance here: https://github.com/Azure-Samples/iotedge-end2end-messageflow