dtoro 7e802bbb14 sse: real-time flushing via raw handler overriding the generated route ...

The generated strict-server path could only return an io.Reader that
io.Copy drains without flushing, so SSE events sat chunk-buffered instead
of streaming in real time. Replace it with a raw http.ResponseWriter
handler (serveSSE) that Flush()es after every event.

Routing: chi allows a later registration to supersede an earlier one for
the same method+path (verified empirically for v5.3.1), so serveSSE is
registered on the router AFTER gen.HandlerWithOptions and wins over the
generated /events/stream route. It inherits the base middleware chain and
applies auth via With(). The generated StreamEvents method now returns an
error (never reached) so a routing regression fails loudly rather than
silently reverting to buffered delivery.

Adds TestSSEStreamRealtimeDelivery: a real httptest.NewServer + streaming
client (NewRecorder can't flush) that connects, triggers an event, and
asserts delivery within 3s — proving both the override routing and
per-event flushing. Passes in <1s.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-07 13:34:32 +02:00

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