Retry-Middleware: allow smart retry with suggestion from server

[ducttse]

Hi, is there a plan for supporting retry middleware with minimum retry wait duration.
For example, when the server return RetryDelay struct RetryInfo the client can use this information to delay retrying to the server.
I will be happy to provide an implementation if we can agree on the payload that will be return from the server side when it want the client to retry after a period.

[johanbrandhorst]

No, this seems like it's better suited in your own forked implementation. More is not always better in a library like this.

[johanbrandhorst]

Actually, I do really enjoy the idea of using the googleapis RetryInfo to adjust retry delays. We could do that automatically by extracting the error from the handler.