Struct libp2p_swarm::handler::OneShotHandler

pub struct OneShotHandler<TInbound, TOutbound, TEvent>
where
    TOutbound: OutboundUpgradeSend,
{ /* private fields */ }

A ConnectionHandler that opens a new substream for each request.

Implementations

impl<TInbound, TOutbound, TEvent> OneShotHandler<TInbound, TOutbound, TEvent>

where TOutbound: OutboundUpgradeSend,

pub fn new( listen_protocol: SubstreamProtocol<TInbound, ()>, config: OneShotHandlerConfig ) -> Self

Creates a OneShotHandler.

pub fn pending_requests(&self) -> u32

Returns the number of pending requests.

pub fn listen_protocol_ref(&self) -> &SubstreamProtocol<TInbound, ()>

Returns a reference to the listen protocol configuration.

Note: If you modify the protocol, modifications will only applies to future inbound substreams, not the ones already being negotiated.

pub fn listen_protocol_mut(&mut self) -> &mut SubstreamProtocol<TInbound, ()>

Returns a mutable reference to the listen protocol configuration.

Note: If you modify the protocol, modifications will only applies to future inbound substreams, not the ones already being negotiated.

pub fn send_request(&mut self, upgrade: TOutbound)

Opens an outbound substream with upgrade.

Trait Implementations

impl<TInbound, TOutbound, TEvent> ConnectionHandler for OneShotHandler<TInbound, TOutbound, TEvent>

where TInbound: InboundUpgradeSend + Send + 'static, TOutbound: Debug + OutboundUpgradeSend, TInbound::Output: Into<TEvent>, TOutbound::Output: Into<TEvent>, TOutbound::Error: Error + Send + 'static, SubstreamProtocol<TInbound, ()>: Clone, TEvent: Debug + Send + 'static,

type FromBehaviour = TOutbound

A type representing the message(s) a NetworkBehaviour can send to a ConnectionHandler via ToSwarm::NotifyHandler

type ToBehaviour = Result<TEvent, StreamUpgradeError<<TOutbound as OutboundUpgradeSend>::Error>>

A type representing message(s) a ConnectionHandler can send to a NetworkBehaviour via ConnectionHandlerEvent::NotifyBehaviour.

type InboundProtocol = TInbound

The inbound upgrade for the protocol(s) used by the handler.

type OutboundProtocol = TOutbound

The outbound upgrade for the protocol(s) used by the handler.

type OutboundOpenInfo = ()

The type of additional information passed to an OutboundSubstreamRequest.

type InboundOpenInfo = ()

The type of additional information returned from listen_protocol.

fn listen_protocol( &self ) -> SubstreamProtocol<Self::InboundProtocol, Self::InboundOpenInfo>

The InboundUpgrade to apply on inbound substreams to negotiate the desired protocols.

fn on_behaviour_event(&mut self, event: Self::FromBehaviour)

Informs the handler about an event from the NetworkBehaviour.

fn poll( &mut self, _: &mut Context<'_> ) -> Poll<ConnectionHandlerEvent<Self::OutboundProtocol, Self::OutboundOpenInfo, Self::ToBehaviour>>

Should behave like Stream::poll().

fn on_connection_event( &mut self, event: ConnectionEvent<'_, Self::InboundProtocol, Self::OutboundProtocol, Self::InboundOpenInfo, Self::OutboundOpenInfo> )

fn connection_keep_alive(&self) -> bool

Returns whether the connection should be kept alive.

fn poll_close(&mut self, _: &mut Context<'_>) -> Poll<Option<Self::ToBehaviour>>

Gracefully close the ConnectionHandler.

fn map_in_event<TNewIn, TMap>(self, map: TMap) -> MapInEvent<Self, TNewIn, TMap>

where Self: Sized, TMap: Fn(&TNewIn) -> Option<&Self::FromBehaviour>,

Adds a closure that turns the input event into something else.

fn map_out_event<TMap, TNewOut>(self, map: TMap) -> MapOutEvent<Self, TMap>

where Self: Sized, TMap: FnMut(Self::ToBehaviour) -> TNewOut,

Adds a closure that turns the output event into something else.

fn select<TProto2>( self, other: TProto2 ) -> ConnectionHandlerSelect<Self, TProto2>

where Self: Sized,

Creates a new ConnectionHandler that selects either this handler or other by delegating methods calls appropriately.

impl<TInbound, TOutbound, TEvent> Default for OneShotHandler<TInbound, TOutbound, TEvent>

where TOutbound: OutboundUpgradeSend, TInbound: InboundUpgradeSend + Default,

fn default() -> Self

Returns the “default value” for a type.