j web socket

Boosting Web Communicationwith WebSockets

jWebSocket – The Open Source Solution for Real-Time Web Developers

SDC 2011April 04-05, 2011

Göteborg Convention CentreGöteborg, Sweden

Alexander Schulze & Claudia GillrathInnotrade GmbH, Germany

Boosting Web Communication with WebSockets 205.04.2011

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driven by WebSockets

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Agenda

• Introduction:Status, Technology, Targets

• Use and Benefits vs. http• Models, Migration and Implementation• Solutions, Aspects and Prospects• Discussion

Today's Session

The Web becomes more and more

Necessity of evolution to a platform for real-time data exchange

WebSocket technology is the fundament


Introduction

pervasive interactive social mobile

Status of Web Communication


The HTTP Protocol• Designed for document transmission

• Cumbersome, nearly real-time tricks• Polling, Long-Polling• Reverse-AJAX, Comet etc.

• Ultimately non-standardized hacks

• Remains a Request/Response mechanism


WebSockets – Technology

What are WebSockets?

• Bidirectional, full-duplex, permanent TCP connections 400 times less overhead ⅓ of latency

• Standardized in HTML5 by W3C & IETF protects investments

• Single TCP port saves 50% server resources


WebSockets – Technology

What else?

• Designed for interactiveWeb Applications

• Open for all kind ofstationary and mobilebrowser based and native apps

• Not just a protocol, but a new paradigmRequest/Response Real-Time Communication

Demand from Developers, Providers and Users

• CompatibilityInteroperability

• IndependencyIntegratability

• ReliabilitySecurity


WebSockets – Targets

Demand from Developers, Providers and Users

• AvailabilityScalability

• ExtendabilityFlexibility

• SimplicityMaintainability


WebSockets – Targets


WebSockets – Concept

The Concept• Framework vs. Client/Server• 3rd Party Engines and Servers• Message Routing, Stream,

Send, Broadcast, Events, Channels

• Tokens and Plug-ins• Listeners and Apps• Filters and Encryption


WebSockets – Models

jWebSocket Framework

TCPNIO

JBossNetty

Glass-Fish

EclipseJetty

SystemPlug-in

CustomApp

3rd-PartyApp

CustomPlug-in


• Replacible Engines• Stand-Alone or

Embedded Operation• Plug-ins and

WebSocket Apps• Completely open

Engines

Plug-ins Apps



XMLJSON

jWebSocket Tokens

• WebSocket nodes are stupid• Need for a common language

to understand incoming packets• Dataformats

JSON, XML or CSV• Solution: Abstract Data objects,

so called „Tokens“ jWebSocket Framework

Token-Processor

NativeClient

BrowserClient


WebSockets – Interoperability


WebSocket Services

WebSocketApps

X-Browser-Compatibility

• Native Support inChrome 4+, FF 4,Safari 5, Opera 11

• Flash-Fallback forIE and older Browsers

• Long-Polling orComet Fallback


WebSocket Services

WebSocketApps


WebSockets – Interoperability

X-Platform-Compatibility

• Android (Dalvik VM)• iPad/iPhone (iOS)• Symbian/BlackBerry

(Java ME)• Windows Phone and

Samsung Bada pending

jWebSocket Security

• SSL-Encryption• wss://[host][:port][/path]...• Authentication & Authorization• Filter & Validation• Virus-Scanning• Spam-Filter & Banning



wss://


In System-Filter Out

Client

In Custom-Filter Out

Filterchain




Collaboration SuiteOnline-Game

Channel 2„WorkTogether“

Channel 1„PlayTheGame“

Player 1 Player 2 Collab.Memb1

Collab.Memb2

jWebSocket Channels

• Publish/SubscribeMechanism

• Private and PublicChannels

• Authentication• Separate Applications


jWebSocket Events• Event-Driven Programming

using the Observable Pattern

• Objects are „observable“

• Clients or other instancesobserve objects andare notified by events

• Easy, flexible and effective

WebSocket –Models

Observ

e

Observer 1( Client )

Observer 2( Client )

ws://or wss://

Observable (Server)



Synchronization Backbone

Client

Node 3Node 2Node 1

Re-director

LoadBal.

ClientjWebSocket Clusters

• Load-Balancer• Redirector• Backbone simply

WebSocket based• External

Service Nodes

Ext.Serv.Node


jWebSocket Plug-ins

• JDBC, SMTP, XMPP

• Remote Procedure CallsC2S-, S2C-, C2C-RPCs

• Object-, Filesharing

• Logging, Stats, Admin

• Chat, Stream, Twitter

WebSocket – Plug-ins

JDBC SMTP XMPP RPC ...

Brows.Client

Deskt.Client

CustomClient

Stream Sharing Chat Twitter ...

MobileClient



WebSockets – Application Areas

Where to use WebSockets?

• Chats, Messaging and Mail• Remote Control and Monitoring• Push and Streaming Services, Financial Ticker,

Weather, News, Video• Bidirectional Remote Procedure Calls• Sharing Objects, Databases, Files• Uniting Stationary and Mobile Applications


WebSockets – Prospects

What is the future of WebSockets?

• New Dimension of Online-Collaboration• New Level of Online-Entertainment• New Opportunities for Online-Education• New Social Participation and Contribution

What comes to your mind?

Questions & AnswersAlexander Schulze

[email protected]

Forum & Download:http://jwebsocket.org, @jWebSocket


Thank you for your attention!