Asp.Net Web Api2 + SignalR

Question

Help me please!

I have some project of Mail. I need to use SignalR. Now I only have this in my Startup

app.MapSignalR();

I Have Hub

[HubName("MailHub")]
public class MailHub<THub>: Hub
    where THub : IHub
{
    public void SendMessage (Mail message)
    {
        Clients.Caller.addMessage(message);
    }
}

I Have MailController

 [Authorize]
[RoutePrefix("api/mail")]
public class MailController : ApiController

{

    private readonly MailStore<Mail> _mail;

    public MailController()
    {
        _mail = new MailStore<Mail>(MongoUtil<Mail>.GetDefaultConnectionString());
    }

    [HttpPost]
    [Route("send")]
    public async Task<IHttpActionResult> SendMessage(Mail message)
    {
        var hubContext = GlobalHost.ConnectionManager.GetHubContext<MailHub<IHub>>();

        if (hubContext != null)
        {

            if (!ModelState.IsValid)
                return BadRequest(ModelState);

            var currentUser = User.Identity.Name;

            var sendMessage = new Mail
            {
                Subject = message.Subject,
                Sender = message.Sender,
                Receiver = message.Receiver,
                Message = message.Message
            };

            await _mail.CreateAsync(sendMessage);

          //  hubContext.Clients.Clien....;

            /*   if (!result.Succeeded)
               {
                   return BadRequest(ModelState);
               }
               */
            return Ok();
        }
        return BadRequest();
    }
}

And How I Can use SignalR at this Controller? I need that some user send e-mail to another user using SignalR.

Answer 1

Hi I change the method to be static and then I was able to call in MVC controler with classname.methodname . I think you can do the same .please try and let me know.

      [HubName("MailHub")]
    public class MailHub<THub>: Hub
          where THub : IHub
    {
    // change to static
    public static void SendMessage (Mail message)
    {
       IHubContext context = GlobalHost.ConnectionManager.GetHubContext<MailHub>();
       context.Clients.All.addMessage(message);
     }
}

Answer 2

Looking at your code, you can send an email in the same way as you are doing in the controller.

[HubName("MailHub")]
public class MailHub<THub>: Hub
    where THub : IHub
{
    public void SendMessage (Mail message)
    {
        var sendMessage = new Mail
        {
            Subject = message.Subject,
            Sender = message.Sender,
            Receiver = message.Receiver,
            Message = message.Message
        };
        await _mail.CreateAsync(sendMessage);
    }
}

or more simply:

[HubName("MailHub")]
public class MailHub<THub>: Hub
    where THub : IHub
{
    public void SendMessage (Mail message)
    {
        await _mail.CreateAsync(message);
    }
}

There's no inherent requirement for SignalR to send a response back to the SignalR client (unless you wanted to), just receive the parameters and send the mail as you would in the controller.