Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported.

[chaptergy]

Steps to reproduce

1. ???
2. Start a call
3. Allow Firefox to access the microphone and camera

Expected behaviour

The call is started, and my mic and camera are working

Actual behaviour

The following error message pops up

Access to microphone & camera is only possible with HTTPS: Please move your setup to HTTPS

When looking into the console, the real error seems to be

Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported.

I have no idea what that means and I can't find anything about that error online.

Browser

Microphone available: yes

Camera available: yes

Operating system: Archlinux

Browser name: Firefox

Browser version: 75.0

Browser log

JQMIGRATE: Migrate is installed, version 1.4.1 jquery-migrate.min.js:2:551
This page uses the non standard property “zoom”. Consider using calc() in the relevant property values, or using “transform” along with “transform-origin: 0 0”. addStylesClient.js:220:17
Proxying an event bus of version 1.1.2 with 0.2.1 ProxyBus.js:65:14
Handlebars is deprecated: please ship your own, this will be removed in Nextcloud 20 globals.js:66:15
Setting current user talk.js:1661:19914
Source map error: Error: request failed with status 404
Resource URL: https://mynextcloud.com/custom_apps/spreed/js/talk.js?v=0194969a-12
Source Map URL: talk.js.map 2
Current participant found 2 talk.js:993:122107
The request has been canceled 
Object { message: "canceled" }
talk.js:707:3891
Joined 
Object { data: {…}, status: 200, statusText: "OK", headers: {…}, config: {…}, request: XMLHttpRequest }
talk.js:119:3213
Joined 
Object { data: {…}, status: 200, statusText: "OK", headers: {…}, config: {…}, request: XMLHttpRequest }
talk.js:119:3213
The request has been canceled 
Object { message: "canceled" }
talk.js:707:4581
Current participant found 2 talk.js:993:122107
Current participant found talk.js:993:122107
Joining call talk.js:993:123347
Access to microphone & camera failed DOMException: "AudioContext.createMediaStreamSource: Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported." talk.js:147:8501
The request has been canceled 
Object { message: undefined }
talk.js:707:4581
Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported. talk.js:993:32472
Current participant found talk.js:993:122107

Talk app

Talk app version: 8.0.7

Custom TURN server configured: no

Custom STUN server configured: no

Server configuration

Operating system: Don't know

Web server: Don't know

Database: MySQL

PHP version: 7.3.15

Nextcloud Version: 18.0.3

[nickvergessen]

Okay, so one thing is showing a wrong error message.

I guess we run into error.name === 'NotSupportedError' and then we fall back to the HTTPS message.

The other question is if you did something fancy with the selected audio input to make your browser trigger Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported. Any idea how we can create that behaviour, so we can see how to differenciate it from the HTTPS problem?

[chaptergy]

The problem seems to be Firefoxes resistFingerprinting flag.

If you go to about:config in Firefox, and set the flag privacy.resistFingerprinting to true, the issue arises.

✔️ Solution

Set the value back to false

[nickvergessen]

Confirmed. Okay so we have a problem here. It is also not possible to detect this I guess?

[chaptergy]

Nope, at least it shouldn't be. It might be with disproportionate effort, but I don't see that as an option. I think Jitsi is able to use the microphone, so there seems to be some way to use it anyways 🤔

[jahrvos]

Is this dependent on the version of FireFox? And where exactly can we set resistFingerprinting to false?

[chaptergy]

It should not be dependent on the Firefox version. Resist fingerprinting can be enabled as explained in #3323 (comment), so by going to about:config