The default implement of an event sink object used by Server for when certain kinds of events occur in the life of the server.
The methods available are the events that the Server fires.
Create an Events object that prints to stdout and stderr.
Returns an Events object which writes it‘s status to 2 StringIO objects.
Write str to +@stderr+
Write str to +@stdout+
An HTTP parse error has occured. server is the Server object, env the request, and error a parsing exception.
An unknown error has occured. server is the Server object, env the request, error an exception object, and kind some additional info.
[Validate]