val t_proxy : Hydro_types.htype
val t_proxy_alt : Hydro_types.htype
val t_tcp_endpoint : Hydro_types.htype
val t_udp_endpoint : Hydro_types.htype
val t_msg_request : Hydro_types.htype
val t_msg_batch_request : Hydro_types.htype
val t_msg_reply : Hydro_types.htype
val t_msg_reply_error : Hydro_types.htype
val endpoint_type :
  [< `SSL of 'a | `TCP of 'b | `UDP of 'c | `Unknown of 'd * 'e ] ->
  [> `SSL | `TCP | `UDP | `Unknown of 'd ]
val string_of_endpoint_type :
  [< `SSL | `TCP | `UDP | `Unknown of int ] -> string
val endpoint_cmp : Hydro_types.endpoint -> Hydro_types.endpoint -> int
val network_port_of_connector :
  [< `Endpoint of 'a * Hydro_types.network_port option ] ->
  Hydro_types.network_port option
val host_port_of_endpoint :
  [> `SSL of < host : 'b; port : 'c; .. > as 'a
   | `TCP of 'a
   | `UDP of < host : 'b; port : 'c; .. > ] ->
  ('b * 'c) option
val connector_of_resolved_endpoint :
  ([> `SSL of < port : 'c; .. > as 'b
    | `TCP of 'b
    | `UDP of < port : 'd; .. > ]
   as 'a) ->
  'e -> [> `Endpoint of 'a * [> `TCP of 'e * 'c | `UDP of 'e * 'd ] option ]
val pv_to_string : Hydro_types.protocol_violation -> string
val lim_to_string : Hydro_types.limitation -> string
val exn_to_string : exn -> string
val pe_to_string : Hydro_types.proxy_error -> string
val cc_to_string : Hydro_types.client_condition -> string
val result_to_string :
  [< `Facet_does_not_exist of 'a
   | `Object_does_not_exist of 'b
   | `Operation_does_not_exist of 'c
   | `Success of Hydro_types.encap_buffer
   | `Unknown_exception of string
   | `Unknown_local_exception of string
   | `Unknown_user_exception of string
   | `User_exception of Hydro_types.encap_buffer ] ->
  string
val htype_to_string :
  ([< `Bool
    | `Byte
    | `Class of string
    | `Dictionary of 'a * 'a
    | `Double
    | `Enum of 'b
    | `Float
    | `Int
    | `Int32
    | `Long
    | `Proxy of string
    | `Sequence of 'a
    | `Short
    | `String
    | `Struct of (string * 'a) array
    | `Void ]
   as 'a) ->
  string