public protocol RetrierFactory
A retrier factory is a simple class that creates retriers for failed requests on demand. The
reason for using the factory is to allow for stateful retriers. As they cannot easily be shared
across requests, each request requires its own instance of the retrier. Consequently, any entity
HttpService protocol needs to provide a retrier factory yielding retriers
instead of a retrier instance.
When using your own retriers, you will most likely use the same retrier no matter the request.
In this case, you do not have to define a type implementing this protocol, but have a look at
Returns some retrier for the given request. This method is only called when the given request has failed. The factory may return different kinds of retriers for different requests. Whenever a retrier is stateful, it is also the responsibility of the factory to ensure that every invocation of this method returns a different instance of a retrier.
The request that has failed and for which to provide a retrier.