Tus.io presentation for iOS devscout meetup
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Khang Toh describes his experience developing iOS apps and games since 2008. He had an idea for an app called Catstagram to share funny cat photos and videos after seeing cat pictures at work. This led him to co-found MogiMe to create mobile-first apps. The key challenge was resumable file uploads on mobile networks. He discovered the TUS protocol which allows splitting files into chunks for upload over HTTP. While still young, TUS provided a solution for his cat-focused startup and others through open source client and server implementations.
![What is the TUS protocol?
PATCH "/files/1" HTTP/1.1
Host: tus.example.org
Content-Length: 100
Offset: 0
[file data]
RESPONSE:
HTTP/1.1 200 Ok](https://image.slidesharecdn.com/tusio-iosdevscout-130819015419-phpapp02/85/Tus-io-presentation-for-iOS-devscout-meetup-20-320.jpg)
![What is the TUS protocol?
PATCH "/files/1" HTTP/1.1
Host: tus.example.org
Content-Length: 30
Offset: 70
[remaining file data]
RESPONSE:
HTTP/1.1 200 Ok](https://image.slidesharecdn.com/tusio-iosdevscout-130819015419-phpapp02/85/Tus-io-presentation-for-iOS-devscout-meetup-22-320.jpg)
Tus.io presentation for iOS devscout meetup
- 2. About me • Developer, designer, thinker and entrepreneur • Co-Founder / CTO at MogiMe Inc, San Francisco and PicoCandy Singapore :)
- 3. My iOS Story• Bought iPhone 1st gen in 2008. Started playing with iphone sdk 2.0 • Developed first iOS game, smackBOTS using UIKit !!??!!, 500K downloads in the first month, Top100 Overall • First PvP multiplayer iOS game, super hackery implementation in 2009 • Partied with the Woz at WWDC2009 • Aspired to be an entrepreneur
- 4. What do you do as an entrepreneur?
- 5. You think of ideas
- 6. You see funny cats pics at work Sometimes you get bored and google for funny cats at work
- 7. Then all the sudden, you have an awesome idea
- 8. Catstagram! User Generated Funny Cat Pics and Videos! Shot using their mobile phone camera! Using the Catstagram app!
- 9. MVP Development 101 • Wrote server code • Wrote iOS code • Wrote server code • Wrote iOS code
- 10. Problem How to do file upload on mobile?
- 11. How to do file upload on mobile?
- 12. How to do file upload on mobile?
- 13. How to do file upload on mobile? SUCKY SG MOBILE NETWORK
- 14. How to do RESUMABLE file upload on mobile?
- 15. It's possible, but way too hard for a mobile-first and cats-focus startup • Flash?? Not possible + it sucks. • HTML5 ?? Not great on mobile safari • Native?? AFNetworking? HTTP?
- 16. Then you google like every developer
- 17. TUS.IO a resumable file upload protocol on top of HTTP
- 18. What is the TUS protocol? • Simple, open and free • HTTP-based ( POST, HEAD, PATCH ) • Split file into chunks • Send smaller pieces, server keeps track of chunks / offset
- 19. What is the TUS protocol? POST "/files" HTTP/1.1 Host: tus.example.org Content-Length: 0 Final-Length: 100 RESPONSE: HTTP/1.1 201 Created Location: http://tus.example.org/files/1
- 20. What is the TUS protocol? PATCH "/files/1" HTTP/1.1 Host: tus.example.org Content-Length: 100 Offset: 0 [file data] RESPONSE: HTTP/1.1 200 Ok
- 21. What is the TUS protocol? HEAD "/files/1" HTTP/1.1 Host: tus.example.org RESPONSE: HTTP/1.1 200 Ok Offset: 70
- 22. What is the TUS protocol? PATCH "/files/1" HTTP/1.1 Host: tus.example.org Content-Length: 30 Offset: 70 [remaining file data] RESPONSE: HTTP/1.1 200 Ok
- 23. Awesome! What about the servers and the clients? • tusd - reference server implementation using Go • tus-ios-client, native objective-C client library • rubytus, ruby em-based server implementation, work in progress
- 24. Use with caution • Young protocol, 0.2.1, still changing • New features in planning • TUSKit - iOS client needs work, we're working on it • Need more support from OSS • RFC? Not ready but is the goal for the protocol Probably ok for cat-focus mobile-first startups
- 25. Where to find more info • Official site http://tus.io • Github: http://github.com/tus • IRC: #tusio freenode • Duh... It's open source
- 26. Demo
- 27. Questions?