Log request host and uri.

server.go

@@ -108,6 +108,9 @@ func (server *RPCServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		attribute.String("request.proto", r.Proto),
 		attribute.Int("request.proto_major", r.ProtoMajor),
 		attribute.Int("request.proto_minor", r.ProtoMinor),
+		attribute.Int64("request.content_length", r.ContentLength),
+		attribute.String("request.host", r.Host),
+		attribute.String("request.remote_addr", r.RemoteAddr),
 		attribute.String("request.request_uri", r.RequestURI),
 		attribute.String("client_ver", cltVersion),
 		attribute.Int("client_platform", cltPlatform),