`object
method close_all : unit -> unit
method close_connection : Unix.file_descr -> unit
method find_inactive_connection :
Nethttp_client_conncache.peer ->
Nethttp_client_conncache.transport_layer_id ->
Unix.file_descr * Nethttp_client_conncache.inactive_data
method find_my_connections : < > -> Unix.file_descr list
method get_connection_state :
Unix.file_descr -> Nethttp_client_conncache.conn_state
method set_connection_state :
Unix.file_descr ->
Nethttp_client_conncache.peer ->
Nethttp_client_conncache.conn_state -> unit
end`