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Device capability and E2EE protocol negotiation #557
Description
Write apps/backend/docs/concepts-protocol-negotiation.md covering lib/capabilities.ts and services/e2eeProtocol.ts: how a device advertises supported protocols at registration, how normalizeCapabilities defaults an older client to the sealed-box baseline, how a sender picks a mutually-supported protocol, and how checkEnvelopeProtocols rejects an envelope whose declared protocol the recipient device does not support.
Acceptance criteria:
- Documents the capability payload shape and the
BASELINE_PROTOCOLdefault for clients predating the field - Explains the per-envelope
protocolcolumn and why it is recorded per envelope rather than per device - Documents the
protocol_mismatchrejection and what a client should do on receiving it - Explains how this enables a staged sealed-box → Signal rollout without breaking older clients
Activity
timilehin01010-byte commentedon Aug 27, 2026
@timilehin01010-byte has applied to work on this issue as part of the Stellar Wave Program's 8th wave.
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AdaBliss commentedon Aug 30, 2026
@AdaBliss has applied to work on this issue as part of the Stellar Wave Program's 8th wave.
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drips-wave commentedon Aug 30, 2026
Congratulations, @AdaBliss! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.
🧑💻 @AdaBliss: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.
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docs(backend): add protocol negotiation, replay protection, caching, …
github-actions commentedon Aug 31, 2026
Closed by #600, merged into
dev.drips-wave commentedon Aug 31, 2026
This issue has been completed by @AdaBliss as part of the Stellar Wave Program's 8th Wave 🥳
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