Fallback Messaging
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Computer networks have redundant links between machines so that if one fails others can take over to guarantee deliverability. However, as we move up the stack to Person to Person communication protocols via the net, this redundancy gets dropped. Fallback messaging is a means to allow communication between two people to continue even if some of the underlying service providers fail. Opensource clients like ayttm, eb, gaim, kopete, and transports like jabber have the edge here, let's find out how and why. More info here: http://tech.bluesmoon.info/2004/09/fallback-messaging.html
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Fallback Messaging
- 1. Fallback Messaging Philip Tellis / philip@bluesmoon.info Yahoo! Linux Bangalore 2004 / 2004-12-02 Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 2. $ whoami Philip Tellis philip@bluesmoon.info @bluesmoon yahoo geek Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 3. How do you chat? Which IM programs do you use? How many accounts on each? Do you communicate with the same people over multiple services? How often do you use email/SMS to communicate with these people? Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 4. Does the server decide whether you can chat or not? How often has a service gone down for maintenance while you’re in a conversation? What happens to your conversation? What happens to your train of thought? What happens to logs of the conversation – if any? Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 5. Do you know your friends by their names or their handles? Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 6. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 7. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 8. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 9. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 10. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 11. Act 1, Scene 1, Take 1 Philip and Manish are chatting on MSN about their project MSN server goes down Start Y!M, continue conversation Net goes down, only email working Send email/SMS saying that we can’t chat anymore Philip combines all the logs to post to the website Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 12. The idea behind fallback messaging People care about people, not protocols Conversations should not be service dependent Conversation should be continuous even if the service changes Person-person messaging approaches pc-pc messaging Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 13. So what does fallback messaging do? Automatically pick a protocol to use for messaging Automatically switch protocols if one goes down without worrying the user A single log file irrespective of protocol Represent a person as a single entity rather than a bunch of different handles Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 14. What’s needed? A single client that talks multiple protocols The client should group different accounts of a contact into a single entity The client should be able to switch between accounts Perhaps an ability to prioritise the order of fallback Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 15. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 16. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 17. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 18. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 19. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 20. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 21. Act 1, Scene 1, Take 2 Philip and Manish are chatting on MSN about their project MSN server goes down The client switches to Y!M Net goes down, only email working Client switches to email/sms User is notified that he’s now in async mode The client has a combined log of everything communicated Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 22. Can we do this today? FOSS clients like gaim and ayttm can do it Still needs some work FOSS clients have the edge Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 23. Do we really need it? Probably in very few situations, but we sure want it :P Data transfer over IM is an application Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 24. The future of IM Everyone’s talking about IM interoperability Sending structured data and not just human readable conversations over IM IM transports as a commodity with value added services above it Linux Bangalore 2004 / 2004-12-02 Fallback Messaging
- 25. Thank you http://tech.bluesmoon.info/2004/09/fallback-messaging.html Linux Bangalore 2004 / 2004-12-02 Fallback Messaging