SignalR on Old-school Servers & Clients When some lower-common denominator polling mechanism is needed Web Server HTML Client Got Data? Here’s some.

Building Real-Time Applications with ASP.NET SignalR

Brady Gaster

DEV-B343

SignalR is an abstraction that intelligently decides how to enable real-time over HTTP

SignalR on Old-school Servers & ClientsWhen some lower-common denominator polling mechanism is needed

Web

Serv

er H

TM

L C

lien

t

Got Data?

Got Data?

Got Data?

Got Data?

Got Data?

Got Data?

Got Data?

Got Data?

Here’s some data

SignalR on Modern Servers & ClientsWhen WebSockets or some other real-time layer is supported

Web

Serv

er H

TM

L C

lien

tI can party in real time. Can you?

Yep, I can party in real time

Let’s party in real time!

SignalR Core Concepts

Hub

• A more high-level pipeline built upon the Connection API that allows your client and server to call methods on each other directly

Connection

• Represents a simple endpoint for sending single-recipient, grouped, or broadcast messages

Backplane

• A backplane allows you to scale your application to multiple servers. With a backplane enabled, each application instance sends messages to the backplane, and the backplane forwards them to the other application instances.

Hubs

A real-time hit counter

Demo

Any sufficiently advanced technology is indistinguishable from magic - Arthur C. Clarke

SignalR Hubs

A hub is a .NET class that inherits fromMicrosoft.AspNet.SignalR.Hub

Since Hubs are called on the client by name, the name can be customized if needed

The Clients property of a Hub class exposes dynamic properties useful for targeting specific clientsHub classes also have virtual methods useful for responding to connected/disconnected events

Sending messages to all connected clients

Jon

Scott

BradyHub

Clients.All.doWork()

Sending messages to the calling client

Jon

Scott

BradyHub

Clients.Caller.doWork()

Sending messages to other connected clients

Jon

Scott

BradyHub

Clients.Others.doWork()

Sending messages to specific users

Jon

Scott

BradyHub

Clients.Users(“Brady”).doWork()

Real-time Web

SignalR with Angular

Demo

Damian’s MoveShape DemoDemo

My MoveShape Demo

Demo

Authorization with SignalR

Demo

Calling a SignalR Hub from the ServerDemo

Self-hosting SignalR using OWINDemo

Persistent Connections

Persistent SignalR ConnectionsLow levelWork on top of transport abstractionPass untyped messages using Send() and Broadcast()Client must parse message and know what to do

Persistent connections

Demo

Real-time Everywhere

Using SignalR’s Native .NET ClientDemo

Backplanes

Hubs are server-bound, so you’ll need to use a backplane if you’re running a web farm

How do Backplanes Work?What does SignalR do without a backplane?

Web Server B

Web Server A

How do Backplanes Work?Here’s how the Backplane solves the problem

Web Server A

Web Server B

Backplane

Using a SignalR Backplane

Demo

Thanks for your time, I hope you enjoyed the session and that you start partying with SignalR!

DEV-B219 Latest Innovations for ASP.NET MVC Development

DEV-B344 The Future of Microsoft .NET on the Server

DEV-H215 Real-Time Web Applications with Microsoft ASP.NET SignalR

DEV-B318 Best Practices for Scaling Web Apps

Related content

Find Me Later!

http://signalr.net/

http://www.asp.net/signalr

http://blogs.msdn.com/b/webdev/

Track resources

Resources

Learning

Microsoft Certification & Training Resources

www.microsoft.com/learning

Developer Network

http://developer.microsoft.com

TechNet

Resources for IT Professionals

http://microsoft.com/technet

Sessions on Demand

http://channel9.msdn.com/Events/TechEd

TechEd Mobile app for session evaluations is currently offline

SUBMIT YOUR TECHED EVALUATIONSFill out an evaluation via

CommNet Station/PC: Schedule Builder

LogIn: europe.msteched.com/catalog

We value your feedback!

© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.