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P2P vs Sockets: Communication on the Flash Platform

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boushley

This document summarizes and compares sockets and peer-to-peer (P2P) communication methods for Flash applications. Sockets use a client-server architecture and do not require an Adobe-specific implementation, but a server is needed. P2P allows direct communication between clients without a server, using Adobe's RTMFP implementation. Examples of a basic sockets program and a P2P chat application are provided to demonstrate the concepts.

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Sockets vs P2P Communication on the Flash Platform
Aaron Boushley › Senior Developer at ZaaLabs, Ltd. › www.zaalabs.com › aaron@zaalabs.com › @boushley
Forms Of Communication › Sockets › NetConnection + NetGroup › HTTPBased » WebService (SOAP) » HTTPService (REST) › RemoteObject (AMF)
High Level -- Sockets › Client-Server Architecture › Flash Independent › Requires a server of some kind
High Level -- P2P › Peer to Peer Communication › Adobe specific implementation (RTMFP) › No server required*, all clients can communicate *P2P Setup requires a server or ip multicast to maintain the mesh.
Code Time...
Basic Sockets
War Games WOPR example by Nate Beck
P2P Chat › Example by Tom Krcha › http://www.flashrealtime.com/simple-chat-p2p-netgroup-rtmfp/ › Great demonstration of the basics of P2P
Forms Of The IP Stack
TCP vs UDP -- FIGHT! TCP UDP › Header Size: 32 Bytes › Header Size: 20 Bytes › Guaranteed Order › No Guarantee on Order › Guaranteed Delivery › No Guarantee on Delivery › Uses Triple Handshake › Single Packet › IP Header Size: IPv4 ->16 Bytes IPv6 -> 40 Bytes
Protocols › The RTMP Family (RTMP, RTMPT, RTMPS, RTMPE, RTMFP) › AMF (Socket#writeObject/readObject) › SOAP, Plain XML, JSON › Custom (Hopefully bit packed)
Custom AMF JSON XML SOAP
Custom Packing - Hex Binary 05 00000101 First Second Third
Custom Packing - Integer Hex Decimal 00 00 04 D2 1234
Custom Packing Encode Decode
Sockets vs › Communication is (more) private › Can function purely with Flash › Gets through most firewalls › Broadcasts are simpler and Bandwidth Efficient
Private Communication › Sockets send packets directly to recipient › P2P requires directing code » Example » http://www.flashrealtime.com/directed-routing- explained-flash-p2p/ › Encryption for security over the network » AS3Crypto -- https://code.google.com/p/as3crypto/
Sockets + P2P = <3
ZaaMulti
Questions? http://github.com/

More Related Content

P2P vs Sockets: Communication on the Flash Platform

  • 1. Sockets vs P2P Communication on the Flash Platform
  • 2. Aaron Boushley › Senior Developer at ZaaLabs, Ltd. › www.zaalabs.com › aaron@zaalabs.com › @boushley
  • 3. Forms Of Communication › Sockets › NetConnection + NetGroup › HTTPBased » WebService (SOAP) » HTTPService (REST) › RemoteObject (AMF)
  • 4. High Level -- Sockets › Client-Server Architecture › Flash Independent › Requires a server of some kind
  • 5. High Level -- P2P › Peer to Peer Communication › Adobe specific implementation (RTMFP) › No server required*, all clients can communicate *P2P Setup requires a server or ip multicast to maintain the mesh.
  • 8. War Games WOPR example by Nate Beck
  • 9. P2P Chat › Example by Tom Krcha › http://www.flashrealtime.com/simple-chat-p2p-netgroup-rtmfp/ › Great demonstration of the basics of P2P
  • 10. Forms Of The IP Stack
  • 11. TCP vs UDP -- FIGHT! TCP UDP › Header Size: 32 Bytes › Header Size: 20 Bytes › Guaranteed Order › No Guarantee on Order › Guaranteed Delivery › No Guarantee on Delivery › Uses Triple Handshake › Single Packet › IP Header Size: IPv4 ->16 Bytes IPv6 -> 40 Bytes
  • 12. Protocols › The RTMP Family (RTMP, RTMPT, RTMPS, RTMPE, RTMFP) › AMF (Socket#writeObject/readObject) › SOAP, Plain XML, JSON › Custom (Hopefully bit packed)
  • 14. Custom Packing - Hex Binary 05 00000101 First Second Third
  • 15. Custom Packing - Integer Hex Decimal 00 00 04 D2 1234
  • 16. Custom Packing Encode Decode
  • 17. Sockets vs › Communication is (more) private › Can function purely with Flash › Gets through most firewalls › Broadcasts are simpler and Bandwidth Efficient
  • 18. Private Communication › Sockets send packets directly to recipient › P2P requires directing code » Example » http://www.flashrealtime.com/directed-routing- explained-flash-p2p/ › Encryption for security over the network » AS3Crypto -- https://code.google.com/p/as3crypto/

Editor's Notes