The following PR adds support to define custom HTTP status codes (HTTPStatusCode) which can trigger retry of a network request via the default validator object (HTTPDefaultValidator).

The class HTTPDefaultValidator now include the following property:

• retriableHTTPStatusCodes: it defines a list of HTTPStatusCode which can trigger a retry of the call; it's a dictionaryw where the value is a TimeInterval (0 means retry immediately, a positive value like 2 means 2 seconds after retry).

In its default implementation.tooManyRequests's http status code with 3 seconds interval.
However you can create or modify the default behaviour.

This is a short example using the shared HTTPClient.shared instance:

let myValidator = HTTPDefaultValidator()
myValidator.retriableHTTPStatusCodes = [.tooManyRequests: 5] // wait 5 seconds for HTTP 429
HTTPClient.shared.validators = [myValidator]
        
request.maxRetries = 2 // you must set a retry > 1 in order to get it works
request.onRawResponse { response in
  // do something
}
request.run()