An error occurred: Failed to execute 'postMessage' on 'Worker': #<Memory> could not be cloned.

[foreinbug]

environment:

• rustc 1.80.0-nightly (72fdf913c 2024-06-05)
• cargo 1.80.0-nightly (34a6a87d8 2024-06-04)
• wasm-pack 0.12.1
• nightly-x86_64-pc-windows-msvc

No cross domain, use self-signed HTTPS;

cargo.toml

[package]
name = "simple"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[lib]
crate-type = ["cdylib", "rlib"]

[dependencies]
wasm_thread = { version = "0.3.0", default-features = false }
log = "0.4"
wasm-bindgen = "0.2"
console_log = { version = "1.0", features = ["color"] }
console_error_panic_hook = "0.1"

src/lib.rs

use std::time::Duration;

use wasm_bindgen::prelude::*;
use wasm_thread as thread;

#[wasm_bindgen(start)]
fn main() {
    console_log::init().unwrap();
    console_error_panic_hook::set_once();

    for _ in 0..2 {
        thread::spawn(|| {
            for i in 1..3 {
                log::info!(
                    "hi number {} from the spawned thread {:?}!",
                    i,
                    thread::current().id()
                );
                thread::sleep(Duration::from_millis(1));
            }
        });
    }

    for i in 1..3 {
        log::info!(
            "hi number {} from the main thread {:?}!",
            i,
            thread::current().id()
        );
    }
}

build.ps1

wasm-pack build --dev --out-dir ./module/target --target web --features wasm_thread/es_modules

simple.js:338 
 panicked at C:\Users\ASUS\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasm_thread-0.3.0\src\wasm32\mod.rs:349:10:
called `Result::unwrap()` on an `Err` value: JsValue(DataCloneError: Failed to execute 'postMessage' on 'Worker': #<Memory> could not be cloned.
Error: Failed to execute 'postMessage' on 'Worker': #<Memory> could not be cloned.

[chemicstry]

Do you have cross origin isolation header set? It is required for web workers, see #23

[foreinbug]

Do you have cross origin isolation header set? It is required for web workers, see #23

However, there is no cross-domain problem, and the loaded files are all in the same domain

  ctx.set("Cross-Origin-Embedder-Policy", "require-corp");
  ctx.set("Cross-Origin-Opener-Policy", "same-origin");

I tried to add these response headers, but the error was the same

[justinlovinger]

I have the same issue, but only on production. The app works over localhost, with the same headers. The production site is secured using an SSL certificate signed by Let's Encrypt. window.crossOriginIsolated returns true, including on production.

[justinlovinger]

With help from daxpedda on Discord, I discovered the issue is mostly likely related to compiling without the right flags, not cross-origin isolation. In my case, an issue with my build-script for production may be the culprit. As they pointed out, the memory that is failing to clone is ArrayBuffer, not SharedArrayBuffer.