Hi all,

a frequent question is how a (typically server-side) event handler could find 
out more about his counterpart, say the IP address or the like. The common 
suggestion is that this is highly depending on the transport (which is true) 
and therefore doomed to fail if anything changes at that end, hence one /may/ 
use a cast but ... you know.

Here’s the question: Why can’t we just come up with some standard way how these 
variable and context-sensitive information can be handed over to the event 
handler(s), either implicitly by default, or alternatively on request? Two 
approaches that immediately come to my mind are these:

a) a simple key/value map (both strings?), where key can be anything
b) some predefined structure that can hold all kind of information possible 
with existing transports

While (a) is easily extendable, (b) is probably more performant.

Thoughts?

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