Trait sc_network::service::traits::MessageSink

pub trait MessageSink: Send + Sync {
    // Required methods
    fn send_sync_notification(&self, notification: Vec<u8>);
    fn send_async_notification<'life0, 'async_trait>(
        &'life0 self,
        notification: Vec<u8>,
    ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}

Message sink for peers.

If protocol cannot use NotificationService to send notifications to peers and requires, e.g., notifications to be sent in another task, the protocol may acquire a MessageSink object for each peer by calling NotificationService::message_sink(). Calling this function returns an object which allows the protocol to send notifications to the remote peer.

Use of this API is discouraged as it’s not as performant as sending notifications through NotificationService due to synchronization required to keep the underlying notification sink up to date with possible sink replacement events.

Required Methods

fn send_sync_notification(&self, notification: Vec<u8>)

Send synchronous notification to the peer associated with this MessageSink.

fn send_async_notification<'life0, 'async_trait>( &'life0 self, notification: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Send an asynchronous notification to to the peer associated with this MessageSink, allowing sender to exercise backpressure.

Returns an error if the peer does not exist.

Implementations on Foreign Types

impl MessageSink for Arc<Mutex<(NotificationsSink, ProtocolName)>>

fn send_sync_notification(&self, notification: Vec<u8>)

Send synchronous notification to the peer associated with this MessageSink.

fn send_async_notification<'life0, 'async_trait>( &'life0 self, notification: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Send an asynchronous notification to the peer associated with this MessageSink, allowing sender to exercise backpressure.

Returns an error if the peer does not exist.

Implementors