Travis CI allows for users to configure webhook notifications on a number of build results. These POST requests can/should be verified to ensure the integrity of your workflow.
See the Travis CI docs on Verifying Webhook requests for more information.
This repository contains two examples of webhook verification using two popular Node.js frameworks, hapi and express:
The hapi example code can be found here.
The express example code can be found here.
Read more about these examples in my blog post, Verify Travis CI Webhook Notifications with Node.js
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