Hello,

I've been playing with the new WebAssembly build of Dana (so cool by the way!). I'm using it with ws.core as the web-server but I would like to be able to serve the WASM elements dynamically from get() requests. The readme for the WASM SDK only contains a solution for static content via the xdata.html file. I've had a look at the HTML in that file and tried to serve it from a get() but it seems not to load with some web assembly exception in the browser log:

The WebAssembly.Memory object cannot be serialized.

I guess there's something obvious that I'm missing here but I'm not sure what? :)

jess

Hi jess,

You need to set some headers related to security. Before you send any data do the following, where s is your DocStream instance:

s.setHeaders(new Header[](new Header("Cross-Origin-Embedder-Policy", "require-corp"),
                        new Header("Cross-Origin-Opener-Policy", "same-origin"),
                        new Header("content-type", "text/html")))

In the WASM SDK we've done this for static content via the ws config file. The ws framework does not apply headers for dynamic content via get()/post(), though, so you need to do it yourself as above.

I've also added a content-type header, since some browsers require this to load WASM modules.

Barry

Ah that worked thank you! :)

jess