Async messaging return true won't work

[Uğur]

Hello all,

I sent message to background js from my popup.

background js has listener and after getting message from popup,

calls another async method then calls sendResponse with result of the async method

but pop up js doesn't wait for the response.. Can you help?

this is from background.js

pop up js.

[T S]

I suspect this doesn't work with await - the temporary port is liable to close if the listener pauses execution before returning true.  Try swapping await for a .then so that you can return true immediately?

[Uğur]

It didn't work either. I don't know what is the problem..

7 Eylül 2022 Çarşamba tarihinde saat 14:29:28 UTC+3 itibarıyla T S şunları yazdı:

[Jackie Han]

async function f() {
    return true;
}

async function return true? No, the function itself always returns a Promise (here is Promise<boolean>). Because it is not true, you encounter the problem. Below are some correct ways to do it.

function f() { // no async declare

    asyncFunc().then(value => sendResponse(value));

    return true;
}

function f() { // no async declare
    // pass sendResponse to another function to use. 

    // you already use this way, so remove the outer function's sync keyword and remove await keyword inside it.
    asyncFunc(sendResponse);
    return true;
}

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[Robbi]

Try a Long-lived connection . It works in 99% cases

[Uğur]

Oh thank you, I missed that part. That works now

7 Eylül 2022 Çarşamba tarihinde saat 16:01:30 UTC+3 itibarıyla Jackie Han şunları yazdı: