ios-networkinglisted

# iOS Networking Modern networking patterns for iOS 26+ using URLSession with async/await and structured concurrency. All examples target Swift 6.3. No third-party dependencies required -- URLSession covers the vast majority of networking needs. ## Contents - [Core URLSession async/await](#core-urlsession-asyncawait) - [API Client Architecture](#api-client-architecture) - [Error Handling](#error-handling) - [Pagination](#pagination) - [Network Reachability](#network-reachability) - [Configuring URLSession](#configuring-urlsession) - [Common Mistakes](#common-mistakes) - [Review Checklist](#review-checklist) - [References](#references) ## Core URLSession async/await URLSession gained native async/await overloads in iOS 15. These are the only networking APIs to use in new code. Never use completion-handler variants in new projects. ### Data Requests ```swift // Basic GET let (data, response) = try await URLSession.shared.data(from: url) // With a configured URLRequest var request = URLRequest(url: url) request.httpMethod = "POST" request.setValue("application/json", forHTTPHeaderField: "Content-Type") request.httpBody = try JSONEncoder().encode(payload) request.timeoutInterval = 30 request.cachePolicy = .reloadIgnoringLocalCacheData let (data, response) = try await URLSession.shared.data(for: request) ``` ### Response Validation Always validate the HTTP status code before decoding. URLSession does not throw for 4xx/5xx responses -- it only throws for transport-level