Transport API

Overview

The Transport API is a web API which deals with Application to Cloud to Device communications (commands and messages).

It has support for both synchronous and asynchronous communication to the device. For synchronous, the device must be online and available in a specified amount of time to receive the message. For asynchronous, the device receives the message the next time it comes online (some time restrictions may apply) and an acknowledgement is sent by the device to say that it received the message.

Note: In the Transport API documentation and URL schema, “command” refers to synchronous communication, that is, the IoT Hub “method”. “Message” refers to asynchronous communication, that is, the IoT Hub “message”.