The current version of device-mqtt only supports server-side TLS, it's not possible to configure a local certificate that the client would use to authenticate to the server instead of using user/password authentication.
It looks like the app-functions-sdk already has support for this, so we should leverage if/when this issue is addressed:
iain-anderson
commented
4 years ago
Version: 1.2.1
The current version of device-mqtt only supports server-side TLS, it's not possible to configure a local certificate that the client would use to authenticate to the server instead of using user/password authentication.
It looks like the app-functions-sdk already has support for this, so we should leverage if/when this issue is addressed:
https://docs.edgexfoundry.org/1.2/microservices/application/BuiltIn/#mqtt