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Wait for Browser screencast frames

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Replace the WebSocket viewer frame pump's idle poll with read_screencast_frame so live screencast delivery follows the producer cadence instead of a 50 ms sleep cycle.

Keep idle-page timeouts inside the stream loop to avoid screencast restart flashes, and update the Browser regression test to pin the blocking read path and timeout handling.
This commit is contained in:
Alessandro 2026-07-03 01:25:56 +02:00
parent 306012eb00
commit 686e039d1b
2 changed files with 11 additions and 5 deletions
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11
plugins/_browser/api/ws_browser.py
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@ -11,7 +11,7 @@ from helpers.ws_manager import WsResult
from plugins._browser.helpers.runtime import get_runtime, list_runtime_sessions
FRAME_IDLE_POLL_SECONDS = 0.05
FRAME_READ_TIMEOUT_SECONDS = 0.5
FRAME_RETRY_DELAY_SECONDS = 0.5
FRAME_STATE_REFRESH_SECONDS = 0.75
SNAPSHOT_STATE_POLL_SECONDS = 0.75
@ -445,11 +445,14 @@ class WsBrowser(WsHandler):
last_state_refresh = now
try:
frame = await runtime.call("pop_screencast_frame", stream_id)
frame = await runtime.call(
"read_screencast_frame",
stream_id,
timeout=FRAME_READ_TIMEOUT_SECONDS,
)
except KeyError:
break
if frame is None:
await asyncio.sleep(FRAME_IDLE_POLL_SECONDS)
except TimeoutError:
continue
frame["context_id"] = context_id