How do I send messages from server to client using SignalR Hubs

Question

I am just starting to explore signalR and I would like to able to send messages from the server to all clients.

Here is my Hub

 using System;
using          


        

Answer 1

I think it should be

 void aTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
    {
        var context = GlobalHost.ConnectionManager.GetHubContext<Chat>();
        context.Clients.All.addMessage("Hello");      
    }

instead. With Send you are calling the method used by the client to call the server...

Answer 2

Yes you must set that line to:

void aTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
    {
        var context = GlobalHost.ConnectionManager.GetHubContext<Chat>();
        context.Clients.All.addMessage("Hello");      
    }

However this is only half way and still wont work.

In your Js you need to write:

$(function () {

//Proxy created on the fly
var chat = $.connection.chat;

// Declare a function on the chat hub so the server can invoke it
chat.client.addMessage = function (message) {
    $("#messages").append("<li>" + message + "</li>");
};

$("#broadcast").click(function () {
    // call the chat method on the server
    chat.client.addMessage($("#msg").val());
});

$.connection.hub.start();
});

I added the chat.clientthis will add a client-side hub method that the server will call.