Unity Player authentication and Request with JSON

[camouflaged_penguin]

Hi there. When the player starts a game he should authenticate and after that a simple request to a server should be made via JSON. (the authentification should be local for now)

I am not sure where to put this request and how a simple JSON Server Request could look like.
Basically i want to retrieve an information which then changes some Materials in the scene.

[Kurt-Dekker]

Whatever networking you plan to do, keep these notes in mind:

Networking, UnityWebRequest, WWW, Postman, curl, WebAPI, etc:

Using Unity for subscription lists

As with all network code, get it working with Postman or curl first. That makes it NOT a Unity problem. Solve the networking first. You must solve that or anything else is irrelevant. Once you have that working, then try and port it to UnityWebRequest. If it still doesn't work, one handy debug solution is to hook up a proxy like Charles and compare the functioning output from Postman / curl to the output from Unity, and from that reason about where your issues are.

Unity web request acting stupid.

Always get network stuff working outside of Unity in either curl or PostMan, then connect a proxy such as Charles and start trying to replicate the traffic shape with UnityWebRequest. Any other way risks wasting a lot of your time for trivial issues that only the above way will instantly reveal.

And setting up a proxy can be very helpful too, in order to compare traffic:

Using Charles Proxy with Unity

[camouflaged_penguin]

It is running correctly with postman but i am stuck when i want to do the same steps in unity to connect to the server and get the data.

What i want to do:

1. The Player presses a Button
2. The Whole Magic which i did manually in/with Postman is done in unity instead.

i know that i have to use Json for that matter but i never worked with JSON so i don’T have a clue what is needed in Unity to do that stuff.

[Kurt-Dekker]

@camouflaged_penguin

but i never worked with JSON

JSON is just a data serialization mechanism… work through some tutorials for the basic concept of turning objects into strings (serialization) and the reverse (deserialization).

Problems with Unity “tiny lite” built-in JSON:

In general I highly suggest staying away from Unity’s JSON “tiny lite” package. It’s really not very capable at all and will silently fail on very common data structures, such as Dictionaries and Hashes and ALL properties.

Instead grab Newtonsoft JSON .NET off the asset store for free, or else install it from the Unity Package Manager (Window → Package Manager).

https://forum.unity.com/threads/jso…-not-working-as-expected.722783/#post-4824743

https://assetstore.unity.com/packages/tools/input-management/json-net-for-unity-11347

Also, always be sure to leverage sites like:

https://jsonlint.com
https://json2csharp.com
https://csharp2json.io

PS: for folks howling about how NewtonSoft JSON .NET will “add too much size” to your game, JSON .NET is like 307k in size, and it has the important advantage that it actually works the way you expect a JSON serializer to work in the year 2021.

[MaskedMouse]

Depending on your server setup & code. Use UnityWebRequest.Post to send data to your server. An example is in the documentation.

For deserializing json, use newtonsoft json. Either from the asset store (some are quite outdated) or by using the package manager add by package name and fill in com.unity.nuget.newtonsoft-json