Azure IoT SDKs

C Device and Service Clients

• Removed Qpid Proton-C and Paho dependencies and replaced them with more compact libraries targeting small footprint devices
• Added support for using AMQP over WebSockets

Node Device and Service Clients

• Added bulk import and export operations in the Service client SDK
• Automated SAS token renewal in the device client SDK
• Transport-agnostic result objects for open/close and send requests, allowing to write code that is completely independent of the protocol used
• Moved message & error events from the Receiver to the Client object, removing the need to deal with the lifecycle of 2 separate objects when sending and receiving messages
• Added Client.fromSharedAccessSignature() factory method to enable users to manually take care of the SAS token lifecycle

C# Device and Service Clients

• Implemented support for MQTT protocol

Java Device and Service Clients

• Breaking change - when sending commands to devices, the Java service SDK now takes in a fully qualified Message object, rather than a string

General

• Full support for the MQTT protocol - all the clients are now connecting directly to the IoT Hub rather than going through the Protocol Gateway
• All the clients are now sending identification strings when performing server operations across all protocols
• Bug fixes, samples and documentation updates