OptionalconnectAbsolute POST path used to open the inbound text/event-stream response.
OptionalfetchFetch implementation; defaults to globalThis.fetch.
OptionalmaxOutbound message POSTs kept in flight at once; defaults to 16.
A11 WireMessages carry no global order, so a message does not have to wait for the one before it to be answered -- and on any real network that wait is the whole outbound throughput ceiling, one message per round trip. Order is still imposed where it matters: everything outstanding is delivered before a half-close, and an abort goes out ahead of whatever is still in flight. Set to 1 to restore strictly serialised delivery.
OptionalmaxMaximum UTF-8 bytes accepted in one SSE event.
OptionalmessageAbsolute path template containing one {id} for outbound messages.
OptionalrequestExtra Fetch options applied without overriding A11 method/body fields.
OptionalstreamWire-level buffering, timeout, and message-size limits.
HTTP endpoints and resource bounds for an SSE client stream.