Charles Paris

I instantiate the connection on HTTP, not HTTPS. But as I said, it works well when it's packaged and send into iPhone .. I allready checked any options on Unreal...

I also tried to clone the Github repository instead of using the one in Marketplace, no changes too Edit : Tested on Blueprint and in C++, same result

To be honest, I really don't know ...

Any suggestion, solution ? :/

Thanks for your answer @blastodd, I followed your setup by using Unreal Engine 5 source code and SocketIOClient 2.3.0 on project level. Not working too, but I see this warning...

I continuing to have this error : ` LogUObjectGlobals: Warning: Failed to find object 'Class None.SIOJJsonObject'`