Provide `From<Message> for Request`

[alexcrichton]

I've taken most of the ideas learned here about spawning servers back to tokio-proto in tokio-rs/tokio-proto#135 and I believe the only remaining blocker for hyper being compatible with tokio-proto's TcpServer is the usage of SocketAddr in Hyper's request type. If this can be handled to implement From<Message> for Request then Hyper could leverage support in tokio-rs/tokio-proto#130 to use TcpServer directly, especially when working with TLS connections where Hyper's conveniences won't be available.

Talking with @carllerche over lunch today one idea was to have the socket address be a member of the messages coming from the Stream going into tokio-proto. That way the message itself would contain the socket address. I could imagine this being implemented via a trait bound in Hyper perhaps?

What do you think?

[seanmonstar]

That definitely sounds good. This is basically for this line: https://github.com/hyperium/hyper/blob/master/src/server/mod.rs#L258

So, impl From<Message<ProtoRequest, http::TokioBody> for Request? I could move the SocketAddr into the ProtoRequest type, but I don't know how someone would make use of this, since they cannot create those types...

[alexcrichton]

Yeah that's the impl I was thinking of. I don't think users would use this explicitly, but that way Hyper "as is" would hook into tokio-proto's TcpServer so that could be used off the bat.