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FIXED: iOS 27 mirror window stays open (frozen last frame) after disconnect — typeless TEARDOWN doesn't reset the video renderer #540
Description
Activity
we now have an iPad with iPadOS 27 Beta 5 to investigate any new iOS 27 issues
@LukeProducts
Yes we now can confirm this.Differences observed between UxPlay intercating with clients iPadOS 26.6 and iPadOS 27 beta 5 public (BuildVersion 24A5424a)
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- ios27 does not set an initial GetInfo request for txtAirPlay
this may affect BlueTooth LE discovery (to be checked)
- ios27 does not set an initial GetInfo request for txtAirPlay
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2 on Stop Mirroring, iOS 26 sends:
TEARDOWN 96 (audio, if audio was initialized)
TEARDOWN 110 (video)
TEARDOWN
ios27 beta omits the TEARDOWN 110, as reported here, so leaves the video window open.
*NOTE iPadOS 26.6 does send that TEARDOWN 110 (contradicts @LukeProducts observation: there were some logger items between TEARDOWN110 and TEARDOWN, so maybe it was overlooked in iOS 26)
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@LukeProducts thanks for the fix!
- changed the title
[-]iOS 26/27 mirror window stays open (frozen last frame) after disconnect — typeless TEARDOWN doesn't reset the video renderer[/-][+]FIXED: iOS 26/27 mirror window stays open (frozen last frame) after disconnect — typeless TEARDOWN doesn't reset the video renderer[/+]on Aug 29, 2026 - changed the title
[-]FIXED: iOS 26/27 mirror window stays open (frozen last frame) after disconnect — typeless TEARDOWN doesn't reset the video renderer[/-][+]FIXED: iOS 27 mirror window stays open (frozen last frame) after disconnect — typeless TEARDOWN doesn't reset the video renderer[/+]on Aug 29, 2026 ios27 does not set an initial GetInfo request for txtAirPlay
this may affect BlueTooth LE discovery (to be checked)iOS 27 still sends the GET /info txtAirPlay request when it detects the Bluetooth LE beacon, so nothing is broken there...
httpd request received on socket 16, connection 0, method = GET, url = /info?txtAirPlay&txtRAOP, protocol = RTSP/1.0 conn_request response to Bluetooth LE beacon advertisement received) New connection 0x7fbb540128b0 identified as Connection type RAOP GET /info?txtAirPlay&txtRAOP RTSP/1.0 X-Apple-QR: BT<key>osVersion</key> <string>27.0</string> <key>ekey</key>
Environment
Symptom
When the client stops mirroring, the video output window stays open showing a frozen last frame, instead of the renderer being reset/closed. On the next connection this also contributes to a stale display.
Root cause
raop_handler_teardown()inlib/raop_handlers.hhandles three cases:teardown_96(audio stream),teardown_110(video stream, which callsvideo_reset(RESET_TYPE_RTP_SHUTDOWN)), and the "no type" case that destroys the sessions. On older iOS the client sent a type-110 stream teardown (triggering the video reset) before the final typeless TEARDOWN. iOS 26/27 sends the final TEARDOWN without a preceding type-110 (observed in the log:TEARDOWN request, 96=0, 110=0), so the video renderer'svideo_resetis never called and the window/last frame is left in place.Fix
In the typeless teardown branch, when tearing down the mirror session, also call
video_reset(RESET_TYPE_RTP_SHUTDOWN). It must be called afterraop_rtp_mirror_destroy(): destroy joins the mirror receive thread, so no more buffers are pushed into the pipeline that the reset then tears down. (Calling the reset first races the still-running thread against pipeline teardown and can crash in libgstapp — observed as an access violation on reconnect.)@@ raop_handler_teardown(raop_conn_t *conn, ... if (conn->raop_rtp_mirror) { + /* iOS 26+ may send the final TEARDOWN without a type-110 stream + * teardown first; without this reset the video window (and a + * frozen last frame) stays open after the client disconnects. + * The reset must come AFTER destroy: destroy joins the mirror + * thread, so no more buffers are pushed into the pipeline that + * the reset is about to tear down (race -> crash in libgstapp). */ raop_rtp_mirror_destroy(conn->raop_rtp_mirror); conn->raop_rtp_mirror = NULL; + raop->callbacks.video_reset(raop->callbacks.cls, RESET_TYPE_RTP_SHUTDOWN); }