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(Live) build and run golang web server on android.avi
The document details a live coding session where a Golang web server is developed for Android. It discusses the Golang programming language's support for Android since version 1.4, outlining the complex build process involved in creating .so or .apk files as well as binary executables. Additionally, it covers issues encountered when running Golang on Android and provides links to source code and resources related to the project.
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(Live) build and run golang web server on android.avi
- 1. (Live) Build andrun Golang Web server on Android.avi SeongJae Park <[email protected]>
- 2. Nice To MeetYou SeongJae Park [email protected] golang newbie programmer
- 3. Disclaimer The main partof session is live-coding. This slide has only little information. Inspired by camlistore and outyet Maybe useless, *just for fun*
- 4. Goal Of ThisSession Build and run Golang web server on Android Live Coding
- 5. golang: Programming Language forsimple, reliable, and efficient software. http://blog.golang.org/5years/gophers5th.jpg
- 6. Web server Processes requestvia HTTP protocol Web Server Client
- 7. Web server Processes requestvia HTTP protocol Listen a socket Receive HTTP request from the socket Web Server Client url: /blahblah, method: GET
- 8. Web server Processes requestvia HTTP protocol Listen a socket Receive HTTP request from the socket Process the request Web Server Client url: /blahblah, method: GET
- 9. Web server Processes requestvia HTTP protocol Listen a socket Receive HTTP request from the socket Process the request Send HTTP response to client using the socket Web Server Client url: /blahblah, method: GET Status: OK, Body: <p>welcome</p>
- 10. (Live) Simple GolangWebserver …...
- 11. (Live) Simple GolangWebserver …... complete net/http rules The code: https://github. com/sjp38/linuxOutYet/tree/804aa370f5adbf3d 4377ee1b1e862cbc49d81c1c
- 12. Golang and Android ●Golang Supports Android officially from v1.4 ○ The support focus on Application; just let .so or .apk https://blog.golang.org/gopher/gopher.png http://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Android_robot.svg/511px-Android_robot.svg.png
- 13. Golang and Android ●Golang Supports Android officially from v1.4 ○ The support focus on Application; just let .so or .apk ○ Requires complex build process and client code https://blog.golang.org/gopher/gopher.png http://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Android_robot.svg/511px-Android_robot.svg.png
- 14. Golang and Android ●Golang Supports Android officially from v1.4 ○ The support focus on Application; just let .so or .apk ○ Requires complex build process and client code ○ Couldn’t be more simple, easier? https://blog.golang.org/gopher/gopher.png http://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Android_robot.svg/511px-Android_robot.svg.png
- 15. Golang on Android:Background Android is a variant of Linux system with ARM x86 Android exist, though... http://www.kitguru.net/wp-content/uploads/2012/03/linux-android.png
- 16. Golang on Android:Background Android is a variant of Linux system with ARM x86 Android exist, though... Go supports ARM & Linux Officially with static-linking http://www.kitguru.net/wp-content/uploads/2012/03/linux-android.png
- 17. Golang on Android:Background Android is a variant of Linux system with ARM x86 Android exist, though... Go supports ARM & Linux Officially with static-linking So, why not? http://www.kitguru.net/wp-content/uploads/2012/03/linux-android.png
- 18. Golang on Android:Plan 1. Cross compile Go program as ARM / Linux
- 19. Golang on Android:Plan 1. Cross compile Go program as ARM / Linux 2. Include the binary in assets/ of Android app
- 20. Golang on Android:Plan 1. Cross compile Go program as ARM / Linux 2. Include the binary in assets/ of Android app 3. Copy the binary in private space of the app
- 21. Golang on Android:Plan 1. Cross compile Go program as ARM / Linux 2. Include the binary in assets/ of Android app 3. Copy the binary in private space of the app 4. Give execute permission to the binary /data/data/com.example.goRunner/files # ls -al -rwxrwxrwx u0_a55 u0_a55 4512840 2014-11-28 17:45 gobin
- 22. Golang on Android:Plan 1. Cross compile Go program as ARM / Linux 2. Include the binary in assets/ of Android app 3. Copy the binary in private space of the app 4. Give execute permission to the binary 5. Execute it /data/data/com.example.goRunner/files # ls -al -rwxrwxrwx u0_a55 u0_a55 4512840 2014-11-28 17:45 gobin
- 23. (Live) Golang onAndroid ……
- 24. (Live) Golang onAndroid: Problem …… Not successful go binary runner code: https://github. com/sjp38/goOnAndroidFA/releases/tag/devfair 2014.gdg.kr
- 25. (Live) Golang onAndroid: Problem …… Not successful It has no /etc/hosts CA Certs path is different with pure Linux /system/etc/security/cacerts
- 26. (Live) Golang onAndroid: Problem …… Not successful It has no /etc/hosts CA Certs path is different with pure Linux /system/etc/security/cacerts Android is a variant of, not pure Linux GOOS=android has same problem, too :’(
- 27. (Live) Golang onAndroid: Solution It has no /etc/hosts Get IP manually Certifications path is different Use those certifications
- 28. (Live) Golang onAndroid: Again ……
- 29. (Live) Golang onAndroid …… Complete It’s hacky, but works The code: https://github. com/sjp38/linuxOutYet/releases/tag/devfair201 4.gdg.kr
- 30. Summary Golang program canrun on Android
- 31. Summary Golang program canrun on Android Officially as .so or .apk file
- 32. Summary Golang program canrun on Android Officially as .so or .apk file Or, as elf binary with unofficial, little hack
- 33. Summary Golang program canrun on Android Officially as .so or .apk file Or, as elf binary with unofficial, little hack Some features don’t work on Android, yet Still need some hacks
- 34. Final Source Code goweb server: https://github. com/sjp38/linuxOutYet/releases/tag/devfair201 4.gdg.kr go program runner(Android app): https://github. com/sjp38/goOnAndroidFA/releases/tag/devfair 2014.gdg.kr
- 35. This slide hasbeen used for GDG Korea DevFair 2014 GDG Korea Golang Seoul Meetup
- 36. This work bySeongJae Park is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of this license, visit http: //creativecommons.org/licenses/by-sa/3.0/.