Write here briefly the details of what the user is going to learn in a bullet list.
In this Flutter Video Tutorial, we take a look at the Websocket Channel Library and how we can interface with websockets using the Flutter SDK. We also look at the concept of the asynchronous snapshot and the basic idea behind the StreamBuilder widget. We take these concepts and build out a simple echo chat application which fires off a message to a websocket and then receives the message back as an echo.
The Websocket Channel Library gives us an abstraction that is above streams; a StreamChannel. This StreamChannel wraps the websocket connections in a Sink and a Stream. The Sink handles sending messages and the stream handles receiving messages. We can use the Stream in our Stream Builder Widget by accepting the data in Asynchronous Snapshots. These Snapshots are a central concept in Dart; the idea that we can save state and data as a pool of bytes. This idea originally came from one of Dart's predecessor languages, Smalltalk. Dart uses Snapshots in its virtual machine and in different parts of the language for many different reasons. In this case we are using them to gain access to incremental data cross-sections from our stream.
The source code for this project can be found here
The echo websocket server we used in this tutorial can be found here
Stand Alone Projects:
- Dart Flutter Cross Platform Chat Application Tutorial
- Building a Temperature Conversion Application using Dart's Flutter Framework
- Managing State with Flutter Flux and Building a Crypto Tracker Application with Dart's Flutter Framework
Building a Calculator
- Building a Calculator Layout using Dart's Flutter Framework
- Finishing our Calculator Application with Dart's Flutter Framework
Movie Searcher Application
- Building a Movie Searcher with RxDart and SQLite in Dart's Flutter Framework (Part 1)
- Building a Movie Searcher with RxDart and SQLite in Dart's Flutter Framework (Part 2)
- Building a Movie Searcher with RxDart and SQLite in Dart's Flutter Framework (Part 3, Final)
Minesweeper Game
