Realtime Messaging und verteilte Systeme mit SharePoint und Windows Azure Service Bus
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This document discusses different technologies for real-time messaging between web clients and servers, including WebSocket, Server-Sent Events, Forever Frame, and SignalR. It provides code examples of polling and duplex approaches. It also covers using the Windows Azure Service Bus for relaying messages and enabling connectivity through firewalls.
Realtime Messaging und verteilte Systeme mit SharePoint und Windows Azure Service Bus
- 1. Realtime Messaging und Verteilte Systeme mit Sharepoint und Windows Azure Service Bus Technology Advisor in Business Platform Dipl.-Ing. Damir Dobric Division – Microsoft Corp. Microsoft Most Valuable Professional Lead Architect daenet Email: damir.dobric@daenet.com Blog: http://developers.de WINDAYS12 TECHNOLOGY OBRAZOVNI PARTNER
- 2. Agenda CONNECTING ISSUES IN WEB WebSockets Server Sent Events SIGNAL-R Forever Frames WINDOWS AZURE MESSAGING RELAYING EXPANDO CONTRACT
- 3. Infrastructure for Web http Request/Response X http Request/Response http polling http Request/Response Full-Duplex
- 4. Polling and Duplex Approach while(true){ var response = httpClient.SendRequest(“http://...”); processResponse(response.Data); Thread.Sleep(T); } tcpClient.TimeOut = 999999..; var netStream = tcpClient.SendHttpRequest(“http://...”); while(true){ var data1 = netStream.Read(); var data2 = processData(data1); netStream.Write(data2); } } WINDAYS12 TECHNOLOGY OBRAZOVNI PARTNER
- 5. SIGNAL-R CONNECTING SERVER SENT ISSUES IN WEB EVENTS WebSockets Server Sent Events SIGNAL-R Forever Frames WINDOWS AZURE RELAYING MESSAGING
- 6. WebSockets • Driven by HTML5 • Full-Duplex over TCP • Browser native Socket connection • IETF Spec. - HyBi 17 (IE10 Win8=HyBi10)
- 8. Server Sent Events • Push from a server to a browser • Part of HTML5 spec • http://dev.w3.org/html5/eventsource • Header: text/event-stream • Implemented natively in Browser • Long polling without closing connection http://dsheiko.com/weblog/websockets-vs-sse-vs-long-polling
- 9. Forever-Frame streaming • Push notifications • Not based on Long-Polling • Uses HTTP 1.1 chunked encoding
- 10. SignalR • Permanent Connection support for none HTML5 browsers. • Use it when infrastructure does not support any other push technology • Two Part Library – jQuery PlugIn for Client – .NET Library for Server • Supported Transports: – Long polling – WebSockets – Forever Frame streaming – Server Sent events
- 11. DEMO CONNECTING SERVER SENT ISSUES IN WEB EVENTS Server Sent Events SIGNAL-R Forever Frames WINDOWS AZURE RELAYING MESSAGING
- 12. RELAYING CONNECTING SERVER SENT ISSUES IN WEB EVENTS Server Sent Events SIGNAL-R Forever Frames WINDOWS AZURE RELAYING MESSAGING
- 13. Service Bus Connectivity Service Bus 1. Outbound, bi- Forwarder directional TCP socket 2. Outbound, bi- connection directional TCP socket connection 3. Route and relay the message, and send it to the service. Client Service
- 14. CONNECTIVITY • Relaying • Tunneling • Eventing • Push
- 15. WCF Relay Protocol Support Microsoft.ServiceBus.dll v1.6
- 17. Q&A • Connecting Issues in Web • Missing Callback • Cannot initiate Connection from Server • HTML5 Way • WebSocket specification • Still no server support • Still no client support • IIS8/Windows8/http.sys vNext • SignalR • No need for HTTP.Sys vNext • No need for HTML5 • Full Cross Browser Support • Service Bus • Point to Point Connection through firewall WINDAYS12 TECHNOLOGY OBRAZOVNI PARTNER
- 18. Consumer Service Consumer BROCKER Service WINDAYS12 TECHNOLOGY OBRAZOVNI PARTNER
- 19. • HTML5 • Push Notifications • Long polling • Server Sent Events Q&A • • Forever Frame WebSockets Web Development with • SignalR WebSockets and SignalR Damir Dobric blog: http://developers.de http://twitter.com/#!/ddobric