Learn How to Use Charles in iOS Development

Discover how you can use an HTTP proxy to help you develop new iOS apps, debug production issues or intercept and modify API calls during testing. Charles is a Swiss Army knife every mobile developer should learn how to use.

Transcript

2. HELLO Axel Rivera Product Manager @ HYP3R, Inc.
3. Full-Time iOS Dev 2010 - 2017 Twitter / @arivera
4. Charles is an HTTP proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).
8. Key Features • SSL Proxying • Throttling • Disable Caching • Breakpoints • Rewrite • Local / Remote Mapping
9. Adventures in Enterprise Consulting
10. Code for Orlando Street Art Orlando App
11. SSL Proxying
12. Install SSL Root Certificate
13. https://www.charlesproxy.com/documentation/using-charles/ssl-certificates/ Device / https://chls.pro/ssl
16. Install on Computer
17. App Transport Security
18. Disable App Transport Security Info.plist <key>NSAppTransportSecurity</key> <dict> <key>NSAllowsArbitraryLoads</key> <true/> </dict>
19. Multiple App Targets
20. Throttling
21. Disable Caching
22. Works by adding and removing headers from HTTP requests and responses.
23. HTTP Request (No Caching) GET /css/global.css HTTP/1.1 Host: static.streetartorlando.com User-Agent: Mozilla/5.0 ... Accept: text/css,*/*;q=0.1 - If-Modified-Since: Fri, 19 May 2019 08:24:44 GMT - If-None-Match: "06e55285045cd1:0" Referer: http://www.streetartorlando.com/ Accept-Language: en-us Accept-Encoding: gzip, deflate Connection: keep-alive + Pragma: no-cache + Cache-Control: no-cache
24. Inject Errors Modify Responses Mock Responses
25. Breakpoints
27. Modify Request
28. Modify Response
29. Respond with 500 Error
30. Failed Response
32. Rewrite
33. Fail Authentication
34. Match Endpoint
35. Rewrite Response
38. Local Mapping
39. Map Response to Local File
41. Original JSON
42. Updated JSON Add district and tags properties
44. Remote Mapping
45. Map Response to Mock API
50. Additional Features • Port Forwarding • Reverse Proxy • Basic Load Testing
51. The Not So Good • Java App • ! $50 Individual License !
52. • iOS App - $9.99
54. Free Alternatives
55. mitmproxy
56. Fiddler