Provide the peer address for PendingConnection

[dustin]

Currently, a websocket server doesn't have any way to identify the source of incoming connections. The most simple use case is logging the address of incoming connections against a server. One could also process requests differently based on incoming address/network.

I see this used to exist, but was reverted in d1f7eeb without explanation.

[domenkozar]

It seems to have been reverted because there was no implementation actually get the address.