How to post grade on an assignment using canvas LMS API and UnityWeb Request or similar? - unity3d

Question

I am working on a gamification project whose goal is to build a WebGL game with Unity and post the final score as a grade on an assignment using the canvas LMS API. I need to know two things: how to authenticate using a bearer token for now (I know how to create the token already and I will need to use auth 2.0 later) and how to post a grade on an assignment using UnityWeb Request or similar. I have tried using restsharp, the vs code recognized it, but Unity did not. Also tried making a connection with node.js, Unity and node.js connected successfully, but the node wrappers I was using did not work.
In the worst cenario I would like to be able to post a comment on the assignment (I would pass the final grade as a string).
This is what I've tried with httpWebRequest:
string api_token = "bearer token here";
//initializing HttpWebRequest object
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("domain here");
IWebProxy theProxy = request.Proxy;
if (theProxy != null)
{
theProxy.Credentials = CredentialCache.DefaultCredentials;
}
CookieContainer cookies = new CookieContainer();
request.UseDefaultCredentials = true;
request.CookieContainer = cookies;
request.ContentType = "application/json";
request.CookieContainer = cookies;
// write the "Authorization" header
request.Headers.Add("Authorization", "Basic " + api_token);
request.Method = "POST";
// get the response
//WebResponse response = request.GetResponse();
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
Debug.Log(reader.ReadToEnd());
}
I need the node wrappers to do authentication and the post request.
The node wrappers: c10. I've tried with this one a lot and
node-canvas-api
I can access the api and post using postman.

Answer 1

I found out I can use code snippets on postman to retrieve the request in a certain language. With this, I didn't need the python APIs anymore as I was able to get the code directly. I still don't know why Unity did not recognize restSharp, but python solved my problem.
As it was hard for me to find how to post grades and comments on Canvas lms I will leave the PATH here for anyone who has the same problem:
PUT /api/v1/courses/:course_id/assignments/:assignment_id/submissions/:user_id
the query params are:
comment[text_comment] and submission[posted_grade].