connect-tcp: return IP:port assigned to client

[asingh-g]

Should connect-tcp return the ip and port that get assigned to the client in the response header, like we did in connect-udp-listen?

[bemasc]

The TCP client address is almost never of any interest, since it cannot be reused for other connections. Do you have a use case for this metadata?

[tfpauly]

@asingh-g I would expect that this could be a useful extension for a specific use case, rather than something in the base spec?

[LPardue]

Agree sounds like an extension