I have created the simple chat hub tutorial from the asp.net/signalr site.
I have modified it to run from a different domain eg: realtime.mydomain.com
I have installed the package: Install-Package Microsoft.Owin.Cors
Everything is working with Web Sockets on IE10 and Chrome, Firefox cross domain.
I can't get IE9 to work when running cross domain (works only if running from same domain).
Here is the code on realtime.mydomain.com
Startup.cs
using System;
using System.Threading.Tasks;
using Microsoft.Owin;
using Owin;
using Microsoft.AspNet.SignalR;
using Microsoft.Owin.Cors;
[assembly: OwinStartup(typeof(SignalR.Startup))]
namespace SignalR
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
// Branch the pipeline here for requests that start with "/signalr"
app.Map("/signalr", map =>
{
map.UseCors(CorsOptions.AllowAll);
var hubConfiguration = new HubConfiguration
{
//EnableJSONP = true
};
map.RunSignalR(hubConfiguration);
});
}
}
}
ChatHub.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR;
namespace SignalR
{
public class ChatHub : Hub
{
public void Send(string name, string message)
{
// Call the broadcastMessage method to update clients.
Clients.All.broadcastMessage(name, message);
}
}
}
Here is the code on www.mydomain.com
index.html
<!DOCTYPE html>
<html>
<head>
<title>SignalR Simple Chat</title>
<style type="text/css">
.container {
background-color: #99CCFF;
border: thick solid #808080;
padding: 20px;
margin: 20px;
}
</style>
</head>
<body>
<div class="container">
<input type="text" id="message" />
<input type="button" id="sendmessage" value="Send" />
<input type="hidden" id="displayname" />
<ul id="discussion"></ul>
</div>
<!--Script references. -->
<!--Reference the jQuery library. -->
<script src="http://realtime.mydomain.com/scripts/jquery-1.10.2.min.js"></script>
<!--Reference the SignalR library. -->
<script src="http://realtime.mydomain.com/scripts/jquery.signalR-2.0.0.min.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src="http://realtime.mydomain.com/signalr/hubs"></script>
<!--Add script to update the page and send messages.-->
<script type="text/javascript">
$(function () {
// Declare a proxy to reference the hub.
var chat = $.connection.chatHub;
// Create a function that the hub can call to broadcast messages.
chat.client.broadcastMessage = function (name, message) {
// Html encode display name and message.
var encodedName = $('<div />').text(name).html();
var encodedMsg = $('<div />').text(message).html();
// Add the message to the page.
$('#discussion').append('<li><strong>' + encodedName
+ '</strong>: ' + encodedMsg + '</li>');
};
// Get the user name and store it to prepend to messages.
$('#displayname').val(prompt('Enter your name:', ''));
// Set initial focus to message input box.
$('#message').focus();
// Start the connection.
$.connection.hub.url = 'http://realtime.mydomain.com/signalr';
//jQuery.support.cors = true; <-- Do not enable - SignalR handles the use of CORS automatically
$.connection.hub.start().done(function () {
console.log("Connected, transport = " + $.connection.hub.transport.name);
$('#sendmessage').click(function () {
// Call the Send method on the hub.
chat.server.send($('#displayname').val(), $('#message').val());
// Clear text box and reset focus for next comment.
$('#message').val('').focus();
});
}).fail(function () {
alert("failed to connect!");
});
});
</script>
</body>
</html>
IE9 always fails to connect when run cross site.
