Ocamlnet 3 Reference Manual : Http_client_conncache.connection_cache

`object
method close_all : unit -> unit
method close_connection : Unix.file_descr -> unit
method find_inactive_connection :
Http_client_conncache.peer ->
Http_client_conncache.channel_binding_id -> Unix.file_descr
method find_my_connections : < > -> Unix.file_descr list
method get_connection_state :
Unix.file_descr -> Http_client_conncache.conn_state
method set_connection_state :
Unix.file_descr ->
Http_client_conncache.peer -> Http_client_conncache.conn_state -> unit
end`