Struct CellHandlers 

struct CellHandlers {
    meta_handler: Option<Box<dyn MetaCellHandler + Send>>,
    incoming_stream_req_handler: Option<IncomingStreamRequestHandler>,
}

Cell handlers, shared between the Reactor and its underlying Circuits.

Fields

meta_handler: Option<Box<dyn MetaCellHandler + Send>>

A handler for a meta cell, together with a result channel to notify on completion.

NOTE(prop349): this is part of Arti’s “Base Circuit Hop Handler”.

Upon sending an EXTEND cell, the ControlHandler sets this handler to CircuitExtender. The handler is then used in Circuit::handle_meta_cell for handling all the meta cells received on the circuit that are not SENDMEs or TRUNCATE (which are handled separately) or conflux cells (which are handled by the conflux handlers).

The handler is uninstalled after the receipt of the EXTENDED cell, so any subsequent EXTENDED cells will cause the circuit to be torn down.

incoming_stream_req_handler: Option<IncomingStreamRequestHandler>

A handler for incoming stream requests.

Implementations

impl CellHandlers

fn set_meta_handler( &mut self, handler: Box<dyn MetaCellHandler + Send>, ) -> Result<()>

Try to install a given meta-cell handler to receive any unusual cells on this circuit, along with a result channel to notify on completion.

fn set_incoming_stream_req_handler( &mut self, handler: IncomingStreamRequestHandler, ) -> Result<()>

Try to install a given cell handler on this circuit.