RSSuper/tasks/native-business-logic-migration/12-implement-ios-feed-fetcher.md

12. Implement iOS feed fetcher service

meta: id: native-business-logic-migration-12 feature: native-business-logic-migration priority: P0 depends_on: [native-business-logic-migration-09] tags: [implementation, ios, networking]

objective:

• Implement feed fetching service with URLSession

deliverables:

• FeedFetcher.swift
• HTTPAuthCredentials.swift
• FetchResult.swift
• NetworkError.swift
• Feed caching implementation

tests:

• Unit: Test URL session configuration
• Unit: Test HTTP auth handling
• Unit: Test error cases (timeout, 404, etc.)
• Integration: Test fetching real feeds

acceptance_criteria:

• Feeds fetch with proper timeout (15s)
• HTTP auth supported
• Error handling complete
• Response caching implemented
• Performance: <5s for typical feed

validation:

• Run unit tests
• Test with Network Link Conditioner

notes:

• Use URLSession with proper configuration
• Implement exponential backoff for retries
• Respect Cache-Control headers