Using Websockets in Play !
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The document discusses different techniques for real-time communication between a client and server, including short polling, long polling, and websockets. It explains that websockets allow for full-duplex communication and are more efficient than polling techniques. The document then outlines how to use websockets with the Play! framework, including creating enumerators and iteratees on the server and connecting via websockets on the client. It provides a link to a Play! chat application sample that demonstrates using websockets.
Using Websockets in Play !
- 1. Knoldus Software LLP Using WebSockets In Play! Neelkanth Sachdeva Software Consultant neelkanthsachdeva.wordpress.com
- 2. Agenda Short Polling Long Polling WebSockets Websockets with Play ! The Play Chat Application Using Wesockets
- 3. Short Polling Drawbacks : Resource Intensive Slow Even Very Slow One Request / One Response
- 4. Long Polling Drawbacks : - Half Duplax - Again one request / one response
- 5. Whats our probelm Lots of incoming messages
- 6. Websockets
- 7. WebSocket Features & Limitations Features : Full duplax communication Real time messages Efficient & Fast Drawbacks : Available with newer browsers
- 8. Using Websockets with Play ! Producer Consumer
- 9. Using Websockets with Play ! Producer Enumerator Consumer Iteratee
- 10. Iteratees The Consumer Consumes chunks from Producer
- 11. Enumerator The Producer - Produces typed chunks - Only produces if consumer is there.
- 12. At Server : Creating a websocket connection needs a Producer (Enumerator) & a Consumer (Iteratee)
- 13. At Client : Creating a socket connection. var socket = new WebSocket(“ws://localhost:9000”) The Events - onmessage - onopen - onclose
- 14. Understand it through play sample chat application available here : https://github.com/playframework/playframework/tree/master/samples/scala/websocket-chat
- 15. Cheers !