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AI-generatedURLSession HTTPMaximumConnectionsPerHost default change in iOS 15/macOS 12
When iOS 15 and macOS 12 raised the default HTTPMaximumConnectionsPerHost from 4 to 6, developers observed intermittent latency spikes and timeouts during burst traffic. The goal is to determine whether the per‑host connection pool is truly isolated per URLSession or if multiple sessions share sockets, especially when using background sessions or URLSessionS
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