@param entity body included in the message
@param headers message headers shipped with the message *)
class virtual message:
- body: string -> headers: (string * string) list -> version: version ->
+ body: string -> headers: (string * string) list -> version: version option ->
clisockaddr: Unix.sockaddr -> srvsockaddr: Unix.sockaddr ->
object
- method version: version
+ method version: version option
method setVersion: version -> unit
method body: string