Android app that intercepts and decrypts local Home Connect appliance traffic by spoofing mDNS and proxying WebSocket connections. How it works HomeCap discovers Home Connect appliances on the local network via mDNS (_homeconnect._tcp.local.), then redirects the official Home Connect app's traffic through a local proxy by spoofing mDNS responses. The proxy relays WebSocket frames bidirectionally while optionally decrypting and logging the payload. Supported protocols Mode Port Encryption Proxy class AES 80 AES-256-CBC with HMAC-SHA256 chain WebSocketProxy TLS 443 TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 (TLSv1.2) TlsPskProxy Features mDNS discovery of Home Connect appliances on the local network mDNS spoofing (reactive + proactive) redirects only the selected appliance WebSocket MITM proxy with transparent handshake forwarding AES-CBC decryption with per-session decryptor (CBC state isolation) TLS-PSK MITM using Conscrypt for ECDHE_PSK_WITH_CHACHA20_POLY1305 VPN-based NAT fallback for clients with cached DNS entries Live notification with green icon on active connection, vibration on first connect, message/session counters JSON export of decoded messages to Downloads/ Profile import from Home Connect Profile Downloader ZIP files Credential persistence per appliance in SharedPreferences Usage Start the app -- mDNS discovery begins automatically Select an appliance from the discovery list Enter credentials (AES key/IV or TLS PSK) or load from a Profile Downloader ZIP Start Capture -- the proxy starts, mDNS spoofing activates, VPN NAT is established Open the Home Connect app -- traffic is intercepted and decoded in real time Export captured messages as JSON to the Downloads folder