Jonathan Hui
fa374236a5
This commit fixes a frequent unit test flake in ot-test-trickle_timer under the TestTrickleTimerMinMaxIntervalChange test case. The test case starts the trickle timer with Imin = 2000 and Imax = 2000. The random time t (mTimeInInterval) is chosen in [1000, 2000), so t can range up to 1999. When t randomly evaluates to 1999, t + 1 becomes 2000. Calling timer.SetIntervalMax(2000) triggers an early-exit optimization in TrickleTimer::SetIntervalMax because mIntervalMax is already 2000, leaving the scheduled timer's fire time unchanged. The test then crashes on the assertion expecting the fire time to have changed. This is resolved by setting the new interval max to Min(t + 1, interval - 1). This ensures that the requested value is strictly less than 2000 even when t = 1999, successfully triggering the interval shortening and rescheduling logic tested by this case.
What is OpenThread?
OpenThread released by Google is... 
...an open-source implementation of the Thread networking protocol. Google Nest has released OpenThread to make the technology used in Nest products more broadly available to developers to accelerate the development of products for the connected home.
...OS and platform agnostic, with a narrow platform abstraction layer and a small memory footprint, making it highly portable. It supports both system-on-chip (SoC) and network co-processor (NCP) designs.
...a Thread Certified Component, implementing all features defined in the Thread 1.4.0 specification, including all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as Border Router support.
More information about Thread can be found at threadgroup.org. Thread is a registered trademark of the Thread Group, Inc.
Who supports OpenThread?
Getting started
All end-user documentation and guides are located at openthread.io. If you're looking to do things like...
- Learn more about OpenThread features and enhancements
- Use OpenThread in your products
- Learn how to build and configure a Thread network
- Port OpenThread to a new platform
- Build an application on top of OpenThread
- Certify a product using OpenThread
...then openthread.io is the place for you.
Note: For users in China, end-user documentation is available at openthread.google.cn.
If you're interested in contributing to OpenThread, read on.
Contributing
We would love for you to contribute to OpenThread and help make it even better than it is today! See our Contributing Guidelines for more information.
Contributors are required to abide by our Code of Conduct and Coding Conventions and Style Guide.
License
OpenThread is released under the BSD 3-Clause license. See the LICENSE file for more information.
Please only use the OpenThread name and marks when accurately referencing this software distribution. Do not use the marks in a way that suggests you are endorsed by or otherwise affiliated with Nest, Google, or The Thread Group.
Need help?
OpenThread support is available on GitHub:
- Bugs and feature requests — submit to the Issue Tracker
- Community Discussion - ask questions, share ideas, and engage with other community members