posix socket api to websocket does not work with any version of node's ws but works in chrome 92.

using latest emsdk

I compiled my project with `... -s WEBSOCKET_URL=ws://192.168.1.63:12345 -s WEBSOCKET_DEBUG=1 -s SOCKET_DEBUG=1 -o project.html`

I launched a local ws server on port 12345 to see if any ws connection attempts are made.

I installed node's ws on client side. (I tried every version of ws with npm install ws@1 all the way to ws@7 to rule out that ws version is at fault)

node version is v16.5.0

when I launch the wasm client with
`node project.js`, I get on the node console

> connect: ws://192.168.1.63:12345, binary
> websocket adding peer: 192.168.1.63:12345

but nothing is logged on the ws server console.

When I load project.html in Chrome 92, I immediately see connection attempts on the server console.

I did read somewhere (can't find now where that node's ws version must be 2, so I tried all ws versions in the 2.0.0-2.3.1 range - to no avail)

I really hope I'm missing something simple here. I would appreciate any pointers.