WebGL Insatallation

WebGL builds will require the index.html file to be customised.

Download the full customised file here.

An additional .js file to be included next to the customised html file. Download the .js file here

Ensure that this line is added to make websockets work.

window.unityInstance = unityInstance;

Further reading

WebAssembly for security purposes does not have Networking-Capabilities.

Read more here: (https://webassembly.org/docs/security/)

Final script should have this included

      script.onload = () => {
        createUnityInstance(canvas, config, (progress) => {
          progressBarFull.style.width = 100 * progress + "%";
          }).then((unityInstance) => {
	  
	  // !!! IMPORTANT
	  window.unityInstance = unityInstance; // <-- THIS LINE MUST BE ADDED TO ENSURE WEBSOCKETS WORK!!!
          // !!! IMPORTANT
	  
          loadingBar.style.display = "none";
          fullscreenButton.onclick = () => {
          unityInstance.SetFullscreen(1);
          };
        }).catch((message) => {
          alert(message);
        });

Additional snippets

Unity WebGL requires an event listener to paste from the OS clipboard. Use the following structure in script.onload.

window.addEventListener('paste', function (e) {
      const str = e.clipboardData.getData('text');
      window.unityInstance.SendMessage('CanvasExample', 'OnBrowserClipboardPaste', str);
     });