P2P Communication Between Android and HarmonyOS Wearable (FA + Stage Model) Device - Technical Guide

Read the original article：P2P Communication Between Android and HarmonyOS Wearable (FA + Stage Model) Device - Technical Guide Problem Description Establishing reliable peer-to-peer (P2P) communication between Android phone applications and HarmonyOS wearable device applications presents unique challenges due to the mixed platform architecture. This guide addresses message delivery, connection stability, and proper synchronization between Android (using HiWear SDK) and HarmonyOS(using wearEngine SDK) platforms. Background Knowledge Communication Architecture The P2P communication system uses the wearEngine SDK to establish a bidirectional communication channel between phone and wearable applications. The system uses three primary API clients: wearEngine.AuthClient for authorization management, wearEngine.P2pClient for peer-to-peer communication, and wearEngine.DeviceClient for device discovery and management. The hybrid P2P communication system uses: Key Capabilities Message Communicat