Error: "Failed to execute send on PresentationConnection", when Chromecast left idle.

[londonshliach]

Have you read the FAQ and checked for duplicate open issues?
Yes.

What version of Shaka Player are you using?
2.5.9

Can you reproduce the issue with our latest release version?
Yes.

Are you using the demo app or your own custom app?
Both.

What browser and OS are you using?
Chrome on Android, and Chromecast.

What are the manifest and license server URIs?
I used the Angel One Manifest on the Shaka demo page.
https://storage.googleapis.com/shaka-demo-assets/angel-one/dash.mpd

What did you do?

1. I started playing a video on the Shaka demo page and Cast it to my Chromecast.
2. I paused the video (before it ended).
3. I turned my phone off and left it for 25 minutes.
4. When I turned my phone on again, I was still on the Shaka Demo page, but I was not able to play the video. Nothing happened when I pushed the play button. But the player still showed that I was connected (when pressing the ⋮ button).
5. I connected my phone to my computer via USB and used Chrome Dev tools to inspect the tab.
6. Every time I pressed the play button I got the following error:

Uncaught DOMException: Failed to execute 'send' on 'PresentationConnection': Presentation connection is disconnected.
    at Sa (https://www.gstatic.com/eureka/clank/80/cast_sender.js:72:2020)
    at W (https://www.gstatic.com/eureka/clank/80/cast_sender.js:79:1380)
    at V.f.Cc (https://www.gstatic.com/eureka/clank/80/cast_sender.js:89:299)
    at chrome.cast.c.Qa (https://www.gstatic.com/eureka/clank/80/cast_sender.js:64:372)
    at chrome.cast.c.sendMessage (https://www.gstatic.com/eureka/clank/80/cast_sender.js:64:236)
    at shaka.cast.CastSender.sendMessage_ (https://shaka-player-demo.appspot.com/lib/cast/cast_sender.js:658:11)
    at shaka.cast.CastSender.remoteCall_ (https://shaka-player-demo.appspot.com/lib/cast/cast_sender.js:448:8)
    at HTMLButtonElement.<anonymous> (https://shaka-player-demo.appspot.com/ui/play_button.js:63:20)
Sa @ cast_sender.js:72
W @ cast_sender.js:79
f.Cc @ cast_sender.js:89
chrome.cast.c.Qa @ cast_sender.js:64
chrome.cast.c.sendMessage @ cast_sender.js:64
shaka.cast.CastSender.sendMessage_ @ cast_sender.js:658
shaka.cast.CastSender.remoteCall_ @ cast_sender.js:448
(anonymous) @ play_button.js:63

What did you expect to happen?
I expected it to either play the video on my Chromecast device, or to show that it was disconnected and play the video on my phone.

What actually happened?
It showed that I was still connected, but it wouldn't play.

[joeyparrish]

I'm working on repro with the nightly build right now. If I can't reproduce on the nightly build, I'll try again with v2.5.9.

[joeyparrish]

Confirmed on the nightly build. I forgot to pause the video, but the error occurred anyway. My steps:

1. Open the nightly build
2. Start playback of our DASH live stream
3. Cast it to the TV
4. Background Chrome on Android and lock the phone
5. Wait 25 10 minutes
6. Unlock the phone and bring Chrome to the foreground

The UI doesn't respond to the giant play/pause button.

[joeyparrish]

The stack trace looks much as described by @londonshliach. I see that on this line:

https://github.com/google/shaka-player/blob/09147b1273a1252d2f6c7e3858ee4fa43fd7e42b/lib/cast/cast_sender.js#L670-L673

the method throws an error on timeout rather than calling the error callback we gave it. The fact that it throws feels like a Chromecast SDK bug. But that doesn't explain why we're unable to recover.

[joeyparrish]

Good news, everyone!

I can reproduce the issue with only 10 minutes of lock time.