QtAwsIoT

Author: Kurt Pattyn.

QtAwsIoT is Qt library that implements a client for Amazon AWS IoT.

Features

• MQTT over secure WebSockets support, including SigV4 token authentication support
• Keep-alive (aka ping)
• Subscribing to topics
• Publishing and receiving messages

Missing features

• Native MQTT connectivity
  Currently only supports MQTT over secure Websockets.
• Thing Shadows
• Reconnection and resubscription
• Queuing of messages

Building and installing

Prerequisites

1. Qt version 5
2. CMake v3.5 or higher.
3. QtMqtt.

Building

# Check out the sources.
git clone https://github.com/KurtPattyn/QtAwsIoT.git

# Go into the checked out directory
cd QtAwsIoT

# Create build directory  
mkdir build

# Go into the build directory  
cd build

# Create the build files  
cmake -DCMAKE_BUILD_TYPE=debug -DBUILD_SHARED_LIBS=OFF ..

# To make a release build, change `-DCMAKE_BUILD_TYPE=debug` to `-DCMAKE_BUILD_TYPE=release`  
# To make a dynamic library, change `-DBUILD_SHARED_LIBS=OFF` to `-DBUILD_SHARED_LIBS=ON`

# Build the library  
make

Run unit tests

make test

To enable testing of internal code, add -DPRIVATE_TESTS_ENABLED (default: OFF) to the cmake command line.

Installing

make install

This will install the library and the headers to CMAKE_INSTALL_PREFIX.
CMAKE_INSTALL_PREFIX defaults to /usr/local on UNIX/macOS and c:/Program Files on Windows.
To install in another location, add -DCMAKE_INSTALL_PREFIX="<custom location>" to the cmake command line.

Usage

Include the following in your CMakeLists.txt file

find_package(Qt5AwsIoT)

target_link_libraries(<target> Qt5::AwsIoT)

In your C++ source file include the QtAwsIoT module

#include <QtAwsIoT>

Examples

See the examples directory for examples how to use this library.

Enabling debug output

To enable debugging information of QtAwsIoT, the following environment variable can be defined.
QT_LOGGING_RULES="QtAwsIoT.*.debug=true"