How to Optimize MQTT Configuration for iOS IoT Application on iPhone with Swift?
I've spent hours debugging this and I'm trying to figure out I'm working on a personal project and Currently developing an IoT application that leverages MQTT for real-time communication with devices. During code review, we identified some performance bottlenecks related to our MQTT configuration, particularly in scenarios where the app maintains multiple simultaneous connections. After examining the ClientId and KeepAlive settings, the initial setup was as follows: ```swift let mqttClient = MQTTClient(clientId: "uniqueClientId", host: "broker.hivemq.com", port: 1883, keepAlive: 60) mqttClient.connect() ``` While this worked adequately in low-load testing, we noticed significant delays and dropped messages when scaling the application. My team tried tweaking the `keepAlive` value, but it didn't yield the desired results. Additionally, some colleagues suggested implementing Quality of Service (QoS) level changes, leading us to explore: ```swift mqttClient.subscribe("sensor/data", qos: .atLeastOnce) ``` This subscription method improved message delivery reliability, but at the cost of increased latency. We are now considering whether using a background task might help manage disconnections more effectively. However, the Apple documentation mentions potential issues with battery life, and I want to avoid unnecessary drain. Does anyone have experience optimizing MQTT configurations specifically for iOS applications? Any insights on best practices or alternative approaches that could improve performance without degrading the overall user experience? Also, are there any particular libraries or tools you'd recommend for diagnostics in real-time scenarios? My development environment is macOS. I recently upgraded to Swift latest. Hoping someone can shed some light on this. This issue appeared after updating to Swift 3.10. Any help would be greatly appreciated!