I have installed this package using NuGet in Unity.
I'm unable to import the SpeedTestClient in the project. Can you please help?

Is there a plan to add upload speed?

Install your nugget packet and write down below code, I got object reference error from your function and application came in break mode.

public static async Task<double> GetServerSpeed()
   {
       var server = await SpeedTestClient.GetServer();
   var speed = await SpeedTestClient.GetDownloadSpeed(server);
   var speed1 = await FastClient.GetDownloadSpeed();
       return speed.Speed;
   }

Just like the GetServer, add a GetServers to get x number of servers closest to test site.

Add an overload to SpeedTestClient.GetDownloadSpeed() the ability to test by server id.

example: SpeedTestClient.GetDownloadSpeed(7442)

Any download test that I do using var speed = await SpeedTestClient.GetDownloadSpeed(); results in a 500 error. If I switch to FastClient I get results. As shown in the code below, If I switch to getting the server by geo location, then adding server to the GetDownloadSpeed I still get a 500.

using Serilog;
using SpeedTest.Net;

Log.Logger = new LoggerConfiguration()
    .MinimumLevel.Debug()
    .WriteTo.Console()
    .WriteTo.File("logs/log.txt", rollingInterval: RollingInterval.Month)
    .CreateLogger();

Log.Information("Starting SpeedTestV3");
Log.Information("Running Speed test");
//var server = await SpeedTestClient.GetServer(37.540726, -77.436050);
var speed = await SpeedTestClient.GetDownloadSpeed();
Log.Information($"Speed is: {speed.Speed} {speed.Unit}");
Log.Information("Speed test complete");

.NET 8.0