SignalR possibly not working in .NET 5? Unable to resolve service for type 'Microsoft.AspNetCore.SignalR.IHubContext`1[iBet.Server.Hubs.ChatHub]'

[tonygeorgiev]

I'm trying to setup a chat in a .NET 5 and Angular 10 application but so far the backend part has put me to a hold. Whenever I try to access the ChatController I get

System.InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.SignalR.IHubContext1[iBet.Server.Hubs.ChatHub]' while attempting to activate 'iBet.Server.Controllers.ChatController'.`

This is the controller itself:
`
[Produces("application/json")]
public class ChatController : ApiController
{
private readonly IHubContext _hubContext;

public ChatController(IHubContext<ChatHub> hubContext)
{
    _hubContext = hubContext;
}

[Route("send")]                                           
[HttpPost]
public IActionResult SendRequest([FromBody] MessageRequest message)
{
    _hubContext.Clients.All.SendAsync("ReceiveOne", message.User, message.MessageText);
    return Ok(message.MessageText);
}

}
`

And this is my startup:
` public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddSignalR();
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");
        // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
        app.UseHsts();
    }
    app.UseCors(options => options
       .AllowAnyOrigin()
       .AllowAnyHeader()
       .AllowAnyMethod());

    app.UseRouting();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
        endpoints.MapHub<ChatHub>("/chatsocket");    
    });

}`

From what I understand once you put services.AddSignalR(); it takes care of the DI but it seems it's different in .NET 5, any suggestions would be greatly appreciated.

[BrennanConroy]

Is your hub class private?

[BrennanConroy]

Nevermind, you found the solution on stackoverflow