Manifest v3: XMLHttpRequest API is not working

[KARISHMA SINGH]

XMLHttpRequest API is not working while using service worker in manifest v3. And it's working without manifest v3 in canary channel.

[Kent Brewster]

Pretty sure XHMLHttpRequest requires a DOM; you will want to look into the fetch API.

--Kent

> On Jan 21, 2020, at 9:48 PM, KARISHMA SINGH <kari...@aravalli.co.in> wrote:
>
> XMLHttpRequest API is not working while using service worker in manifest v3. And it's working without manifest v3 in canary channel.
>

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[Simeon Vincent]

KARISHMA, for clarity, are you saying that XMLHttpRequset works in MV2 service workers in Canary? If so, that would be quite surprising as service workers do not have access to XMLHttpRequest by design. I believe the core problem with this API is that XMLHttpRequest can be synchronous and service workers are designed to be completely asynchronous. 

Simeon - @dotproto

Extensions Developer Advocate

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[KARISHMA SINGH]

I have directly tried on Developer Tool. there it worked.

[Kent Brewster]

Sorry, not enough detail here for a good answer. If you tried the developer tool when inspecting a running background page (v2 extension) XMLHTTPRequest might work, since you have a DOM there.

--Kent

[Simeon Vincent]

KARISHMA,

Looking back I think my previous answer was a bit misguided. Karshma, if you want to make request network resources in a service worker you will have to move from the XMLHttpRequest API to the Fetch API.

Cheers,

Simeon - @dotproto

Extensions Developer Advocate

On Tue, Mar 17, 2020 at 3:15 PM KARISHMA SINGH <kari...@aravalli.co.in> wrote:

I have directly tried on Developer Tool. there it worked.

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