Yufeng He 2ffda752ad fix: send SSE heartbeat to prevent WebChat disconnect during compression (#7003) ...

* fix: send SSE heartbeat to prevent WebChat disconnect during compression

When context compression triggers with slow reasoning models (e.g.
deepseek-reasoner), the backend can go 30+ seconds without pushing any
SSE data. The client-side EventSource / browser then assumes the
connection is dead and disconnects, causing the WebUI to hang
indefinitely since it never receives the eventual response.

Fix: yield an SSE comment (`: heartbeat`) on every empty poll cycle.
Comment lines are defined in the SSE spec as keep-alive signals --
the EventSource API ignores them but the HTTP connection stays open.

Fixes #6938

* chore(dashboard): extract SSE heartbeat to constant

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Co-authored-by: Yufeng He <40085740+universeplayer@users.noreply.github.com>
Co-authored-by: RC-CHN <1051989940@qq.com>

2026-03-30 15:52:10 +08:00

..

routes

fix: send SSE heartbeat to prevent WebChat disconnect during compression (#7003)

2026-03-30 15:52:10 +08:00

server.py

feat(dashboard): add SSL configuration resolution for dashboard (#7102)

2026-03-28 23:22:24 +08:00

utils.py

chore: remove Electron desktop pipeline and switch to tauri repo (#5226)

2026-02-19 23:04:18 +09:00