Fibers in Asynchronous Input and Output

Simplifying asynchronous input and output tasks

The call stack of a fiber can simplify asynchronous input and output tasks as well. As an example, let’s imagine a system where users sign on to a service by connecting to a server and providing their name, email, and age, in that order. This would be similar to the sign-on user flow of a website. To keep the example simple, instead of implementing an actual web service, let’s simulate user interactions using data entered on the command line. Let’s use the following simple sign-on protocol, where input data is highlighted:

• hi: A user connects and a flow id is generated.

• id data: The user of flow that corresponds to id enters the next expected data. For example, if the ...