XMLHttpRequest Error, but still works?

[Xeonzinc]

Hi,

 

Currently i create my ground mesh from a height map which is created dynamically on the canvas with:

world_map = canvas.toDataURL();

This is then just passed to the CreateGroundFromHeightMap function, where it creates the height map. Everything works fine when i run this at the start of my program.

 

Now I'm working on rebuilding the ground in game, however whenever I run the same functions again everything still works (the new canvas height map is created, put into a dataURL and the mesh is constructed) but once all the other functions have finished I get this error:

XMLHttpRequest cannot load data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAALEAAADUCAYAAADTEMIsAAAgAElEQ…gmrCfUWUWMxNTwxuXZjRsTzpS8riZwYmpFxXufWonXYPoMikF/INIzW/MAAAAASUVORK5CYII=. Received an invalid response. Origin 'http://54.213.159.7' is therefore not allowed access.babylon.js:3 BJS - [17:15:18]: Error in XHR request in BABYLON.Database.

I don't really understand why I'm getting this error when:

     a ) The image is getting used babylon without problem before the error is thrown

     b ) There is no error when i first run the process (and I'm disposing of everything as far as i can tell)

[davrous]

Hello,

This is strange indeed you fall into database code. Can you please share a simple repro on a website or even better into our playground?

Are you loading a .babylon file without the corresponding .manifest file in your project?

Bye,

David

[Wingnut]

A sneaky hint.  There is only one place in the framework that reports "Error in XHR request in BABYLON.Database"...

 

https://github.com/BabylonJS/Babylon.js/blob/master/Babylon/Tools/babylon.database.ts#L298

 

and of course...

 

https://github.com/BabylonJS/Babylon.js/blob/master/Babylon/Tools/babylon.database.js#L235

 

A guy COULD localize (hijack) BABYLON.Database.prototype._saveImageIntoDBAsync function... putting it inside one's own code.  Put a little console.log in it to make sure the project is running YOUR new localized version.

 

Then fill that puppy full of alerts and logs and try/catch, and maybe you can see what's happening.  And maybe not.    Once you "borrow" a function from the framework and get it into your own code, you can stick probes and sensors all over it.  Make it talk.