Struct SseStream 

pub struct SseStream { /* private fields */ }

An SSE-formatted byte stream wrapping a HubEvent receiver.

Implements Stream<Item = Result<Bytes, std::io::Error>> for use with HTTP streaming response bodies (e.g. actix-web HttpResponse::streaming).

Emits:

• SSE-formatted event blocks for each HubEvent
• Periodic heartbeat comments (: heartbeat\n\n) to keep connections alive

Implementations

impl SseStream

pub fn new(receiver: Receiver<HubEvent>, heartbeat_interval: Duration) -> Self

Create a new SSE stream.

• receiver — the event channel from BextHub::subscribe
• heartbeat_interval — how often to emit a keep-alive comment

Trait Implementations

impl Stream for SseStream

type Item = Result<Vec<u8>, Error>

Values yielded by the stream.

fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream.