What is dial-reference?

DIAL (Discovery And Launch) is an open-source protocol from Netflix that lets a phone, tablet, or other "second screen" device find and start apps on a TV or similar "first screen" device. The classic example is the YouTube cast button: you tap it on your phone, your TV wakes up and the YouTube app opens automatically. This repository contains Netflix's reference implementation, a working example of the server software that runs on a TV or set-top box, plus a client tool for testing it. At its core, the system works through simple network communication. The server runs quietly in the background on your TV device and announces itself on your local network. When a phone or tablet wants to launch an app, it searches for available devices, finds the TV, and sends a standard web-style request telling it which app to start. The server then handles launching that app on the big screen. The included client mimics this discovery and launch process so developers can verify their server implementation behaves correctly. This would be used by hardware manufacturers and software teams building smart TVs, streaming sticks, game consoles, or set-top boxes who want their devices to support this kind of second-screen launching. If you are building a TV platform and want apps like Netflix or YouTube to be launchable from a mobile device, you would implement the DIAL server on your hardware and use the provided testing client to confirm everything works as expected. The project is mostly written in C, meaning the server is designed to be lightweight and embedded directly into TV hardware rather than running as a heavy application. The testing client is a separate C++ program that runs on a developer's computer and communicates with the TV over the local network. The repository also includes newer Node.js-based tests for checking that a server meets the DIAL 2.1 specification, giving developers an automated way to validate their implementation against the standard.