Question 1

How to set up CocoaMQTT with SSL in Swift?

Accepted Answer

For one-way SSL, set allowUntrustCACertificate to true; for two-way, generate a .p12 file using OpenSSL commands from the README and configure it in the client. Examples include code for both scenarios with delegate handling.

Question 2

Does CocoaMQTT fully support MQTT 5.0 features?

Accepted Answer

Yes, it supports key MQTT 5.0 features like connect properties, topic aliases, and session expiry, as shown in the CocoaMQTT5 usage with MqttConnectProperties. However, advanced features like shared subscriptions may require verification.

Question 3

CocoaMQTT vs Moscapsule for iOS MQTT?

Accepted Answer

CocoaMQTT offers native MQTT 5.0 and WebSocket support with active maintenance from EMQ, while Moscapsule is older and may lack recent updates. CocoaMQTT is better for modern Swift projects needing full protocol compliance.

Question 4

How to use WebSocket with CocoaMQTT?

Accepted Answer

Import CocoaMQTTWebSocket and Starscream, create a CocoaMQTTWebSocket instance with a URI, and pass it to the CocoaMQTT initializer. The README provides code for adding custom headers and enabling SSL for WSS connections.

Question 5

Is CocoaMQTT compatible with SwiftUI?

Accepted Answer

Yes, it can be used in SwiftUI by importing the library and managing state in views or view models, but it requires handling delegate callbacks or closures for asynchronous message handling, as demonstrated in the example app.

Question 6

How to handle reconnection in CocoaMQTT?

Accepted Answer

Implement custom logic in the delegate methods like mqttDidDisconnect, where you can check errors and call connect() again. The library doesn't provide built-in automatic reconnection, so developers need to manage this manually.

CocoaMQTT

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