Unable to create web-worker if SharedArrayBuffer is enabled

[LeXXik]

Unable to create a web-worker, if SharedArrayBuffer option is enabled.

Repro: https://playcanvas.com/project/1191623/overview/corp-issue

[MAG-AdrianMeredith]

Literally came here to log the same issue. We have a client hoping to make use of this. It looks like assets come from a different server and that one doesn;t set the COOP + COEP headers that are required for secure features e.g. sharedarraybuffer and workers

[mvaligursky]

Do we know what the solution to this is?
@isumygin-sc or anybody else?

[MAG-AdrianMeredith]

@mvaligursky It should be the same that you did to add SharedArrayBuffer support. All of the servers you use need to return COOP and COEP http headers.
Basically do exactly what that error message says in the screenshot above

[isumygin-sc]

We use credentialless for Cross-Origin-Embedder-Policy if SharedArrayBuffer is enabled

require-corp
A document can only load resources from the same origin, or resources explicitly marked as loadable from another origin. If a cross origin resource supports CORS, the crossorigin attribute or the Cross-Origin-Resource-Policy header must be used to load it without being blocked by COEP.

credentialless
no-cors cross-origin requests are sent without credentials. In particular, it means Cookies are omitted from the request, and ignored from the response. The responses are allowed without an explicit permission via the Cross-Origin-Resource-Policy header. Navigate responses behave similarly as the require-corp mode: They require Cross-Origin-Resource-Policy response header.

[isumygin-sc]

right, so the headers are set for the launch page only and should be set for the worker as well

[isumygin-sc]

could you build me a test case please?

[marklundin]

@isumygin-sc https://playcanvas.com/editor/scene/1953023

[yak32]

i prepared a fix, will be deployed soon

[LeXXik]

Eagerly waiting ;)

[willeastcott]

@LeXXik It should be Monday morning. 😄

[isumygin-sc]

the fix is deployed, please test your projects

[MAG-AdrianMeredith]

Looks good, can confirm I am getting data from a websocket connection handled by a worker thread with sharedarraybuffer!
Weirdly enough I get these error but nothing appears to be broken

Thanks everyone

[marklundin]

@MAG-AdrianMeredith Those errors are because the scripts are not loaded as modules, so static imports and import.meta are invalid. This will be fixes soon, but for now you can see if there is a UMD/CJS build of the library you're using

[LeXXik]

It works on my end. Thank you!

Although, it throws an issue with Draco. I will open another ticket for it.