Added comments to guide ServerAdapter developers.
Added comments to guide ServerAdapter developers.

Copy&paste of the comments in case the links become unavailable:

https://github.com/bottlepy/bottle/pull/865#issuecomment-242795341

> Sorry, but we try to do accept new adapters only if there is a significant demand for it. There are just to many WSGI servers and forks out there to support them all. Since no one commented on this pull request for a while, I'll have to close it. Please feel free to re-open the pull request if the new server adapter matches one of the following conditions:
>
> * The adapter replaces a popular but abandoned project with an actively maintained fork and solves problems/bugs still present in the original project. In this case, you should also add a deprecation warning to the old adapter.
> * The adapter introduces a new server implementation. In this case, the project should be mature enough for productive use and be supported by an active community.  Python 3 support is required, Python 2 support very welcomed.

https://github.com/bottlepy/bottle/pull/647#issuecomment-60152870

> There are currently two pull requests regarding SSL support as a core feature for some of the server adapters. This one and #652 (for eventlet).
>
> While the WSGIRefServer might be useful to test SSL behavior during development, I hesitate merging this for other server adapters and tend to not add SSL support at all. Let me explain why:
>
> * SSL is hard. If we support it, we have to do it properly. People will start using it and rely on it. That is way out of scope for a micro framework.
> * For production setups there are better solutions: nginx+uwsgi, apache+mod_python or any other reverse proxy or load balancer on the planet. They are faster and written by people smarter than me.
> * For testing setups you most probably don't need SSL and if you do, you should be able to setup your favorite server backed yourself and mount Bottle as a WSGI application.
> * Server adapters are quick-and-simple shortcuts to get a server up and running without any configuration. As soon as you need to configure the back-end, you should no longer use the adapters. They are not flexible enough and not meant to be used in that way.
>
> I will, however, gladly pull documentation changes that explain how to set up wsgiref/eventlet/whatever with SSL support.

oz123/bottle,defnull/bottle,Inndy/bottle,Inndy/bottle,fkazimierczak/bottle,defnull/bottle,ifduyue/bottle,bottlepy/bottle,fkazimierczak/bottle,ifduyue/bottle,oz123/bottle,bottlepy/bottle