get iOS audio output working again

[curiousercreative]

Attempts to resolve #18 for the react app by:

1. Leverage the standardized-audio-context ponyfill
2. Never recreate the audio context, even when we think we're not on iOS

Effort 1 above required a lot of typing and perhaps can be done better, I'm no TS super wiz. There's also a couple of whitespace changes (traliing whitespace trimmed), sorry about the noise.

[daredoes]

@curiousercreative how does this affect other platforms? Was that tested?

[curiousercreative]

how does this affect other platforms? Was that tested?

I host snapweb with these patches. I don't have any permanent clients connected, but I'll occasionally connect using my Android phone on Firefox, and two different iOS phones via Safari (I think) and all works well.

[daredoes]

I don't have the power to merge this. I manage a version of snapcast hosted on Unraid Community Apps. I'll probably use your fork on my instances as well until this gets merged though!

From one iOS user to another, thank you.

[curiousercreative]

From one iOS user to another, thank you.

I am NOT an iOS user, I just love one. We are nothing alike... jk. My partner is an iOS user and her prior (now discarded) iPhone we use as a home control device. I initially tried using it as the snapcast client for one room since it had analog audio out (6S), but our WiFi wasn't strong enough and I eventually had to use an SBC with a dedicated WiFi dongle.

[daredoes]

@curiousercreative I used to be like you. Then I took an android to the knee...

I like to use the Fire HD 8 Plus. They go on sale multiple times a year for 40-50% off. Get the ad-supported version, and use FireToolbox to remove all the bloatware. Analog out, usb-c, bluetooth, and wireless charging. like $60 bucks.

[daredoes]

@curiousercreative I did some extra testing, and the big issue with iOS is that it won't let the websocket connection run in the background to keep the music stream alive.

[curiousercreative]

@curiousercreative I did some extra testing, and the big issue with iOS is that it won't let the websocket connection run in the background to keep the music stream alive.

@daredoes Are you saying this branch doesn't play audio in the background on iOS? Or are you sharing troubleshooting from a release branch?

[daredoes]

@curiousercreative this branch, well a modification of this branch with some of your other PRs tied in (like changing the host URL via env var)

[badaix]

Thanks! I have to test a bit the recreation of the audio context. According to my old comment, not recreating it will cause trouble when the sample rate of the stream changes. But maybe this is not an issue anymore with the standardized audio context