Encrypted Android Voice Chat Consultation

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I’m planning an Android-only chat product whose sole purpose is secure, high-quality voice calling. Before I start coding, I want an experienced real-time communications engineer to walk me through the best technical approach and help me avoid common pitfalls. In a single consultation session (up to 90 minutes) followed by a short written brief, I’d like you to cover: • The overall call flow: signalling, NAT traversal, TURN/STUN servers, and how everything fits together on Android. • Which SDKs or libraries (e.g., WebRTC, liblinphone, or other proven stacks) make the most sense for voice-only traffic. • A step-by-step blueprint for implementing true end-to-end encryption on the audio stream—key exchange, SRTP, Double Ratchet or similar—and how t...

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