System.link with WebGl do not behave the same as on PC

Unity Engine
1

Just discovered that after 2 hours of investigation.

I have a struct with a list of string property “walletID”(42 characters long)

var cryptoId = titleDataAllCryptoUserID.SingleOrDefault(id => id.walletID == LoginLogic.wallletID);

if (cryptoId == null ){
}else{

}
The item I am looking for exist. I console logged the content of titleDataAllCryptoUserID on Chrome log console , and it is there.
On WebGL however cryptoId returns null, looks like it is too much work for WebgL to test for a string with 42 characters.

Of course on PC cryptoId return not null…

I found some alternatives but quite complexe to achieve what could normally be done in 5 minutes…

Any ideas why WebGl is in trouble here?

2

How do you generate the walletID in the first place? It‘s quite possible that WebGL simply does not support the necessary cryptographic assemblies.

1 Like
3

it is the result of the login fromChain SDK. but “walletID” is nothing but a string…

4

does chain return a valid walletID to begin with? try logging what you retrieve and check for any rpc call errors.

1 Like
5

Sure, it does return a valid wallet ID, the sample scene is simple enough, and the login with Metamask works.
For posterity, is someone read that post or have a similar bug… I bet there is a limitation with the amount of characters with WebGL.
I can’t test that now, but if I had to test or reproduce this bug,
I would test with a hardcoded string variable of 42 character (leaving the crypto thing aside). Or maybe I would set a variable similar like “0x54d54ff5g4f5g4fg44…” I bet that would reproduce the bug.

6

try logging the contents of the titleDataAllCryptoUserID collection and what the SingleOrDefault query returns

it’s certainly not going to be something as esoteric as “WebGL can’t test a string longer than 40 characters for equality”. Think about it, that would blow up in so many ways for so many users, it could not have gone unnoticed.

PS: have you noticed your wallletID has three l ? Perhaps that is an issue.

7

Of course I did that before posting here.
Chrome debugger output the expected result. titleDataAllCryptoUserID has element 3 elements, and each can be read clearly … all is correct.
But SingleOrDefault return null, so if I have Debug.Log(“myResult =” + myResult ) it logs:
myResult = , basically empty after the “=” sign.
it returns sure null 100% sure of this.
My wallet id is “0x4eba90B4124DA2240C7Cd36A9EEE7Ff9F81Cf601” all I see is 3 EEE. (Why would that be an issue I am curious … )
Next time I do a WebGL build I can reproduce the bug but this time I will search for other strings of 42 characters…
just to see if it has something to do with the content of that string like you suggested…

At some point I can post a tiny WebGL project on Github for other to test if that thing persist…