WS handshake is now authenticated end-to-end. The broker proves that
every connected peer actually holds the secret key for the pubkey
they claim as identity — not just that they know the pubkey.
wire format change:
{type:"hello", meshId, memberId, pubkey, sessionId, pid, cwd,
timestamp, signature}
where signature = ed25519_sign(canonical, secretKey)
and canonical = `${meshId}|${memberId}|${pubkey}|${timestamp}`
broker verifies on every hello:
1. timestamp within ±60s of broker clock → else close(1008, timestamp_skew)
2. pubkey is 64 hex chars, signature is 128 hex chars → else malformed
3. crypto_sign_verify_detached(signature, canonical, pubkey) → else bad_signature
4. (existing) mesh.member row exists for (meshId, pubkey) → else unauthorized
All rejection paths close the WS with code 1008 + structured error
message + metrics counter increment (connections_rejected_total by
reason).
new modules:
- apps/broker/src/crypto.ts: canonicalHello, verifyHelloSignature,
HELLO_SKEW_MS constant
- apps/cli/src/crypto/hello-sig.ts: matching signHello helper
clients updated:
- apps/cli/src/ws/client.ts: signs hello before send
- apps/broker/scripts/{peer-a,peer-b}.ts (smoke-test): sign hellos
with seed-provided secret keys
new regression tests — tests/hello-signature.test.ts (7):
- valid signature accepted
- bad signature (signed with wrong key) rejected
- timestamp too old rejected (>60s)
- timestamp too far in future rejected (>60s)
- tampered canonical field (different meshId at verify time) rejected
- malformed hex pubkey rejected
- malformed signature length rejected
verified live:
- apps/broker/scripts/smoke-test.sh: full hello+ack+send+push flow
- apps/cli/scripts/roundtrip.ts: signed hello + encrypted message
- 55/55 tests pass
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Single HTTP POST /join the CLI calls after parsing an invite link +
generating an ed25519 keypair client-side. Broker validates the mesh
exists + is not archived, inserts a mesh.member row (or returns the
existing id for idempotency), returns {ok, memberId, alreadyMember?}.
body: {mesh_id, peer_pubkey, display_name, role}
- peer_pubkey must be 64 hex chars (32 bytes)
- role is "admin" | "member"
v0.1.0 trusts the request — no invite-token validation, no ed25519
signature check. Both land in Step 18 alongside libsodium wrapping.
size cap enforced via MAX_MESSAGE_BYTES (shared with hook endpoint).
structured log line per enrollment with truncated pubkey + whether
it was a new member or re-enrolled existing one.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
broker-client: full WS client with hello handshake + ack, auto-reconnect
with exponential backoff (1s → 30s capped), in-memory outbound queue
(max 100) during reconnect, 500-entry push buffer for check_messages.
MCP tool integration:
- send_message: "slug:target" prefix or single-mesh fast path
- check_messages: drains push buffers across all clients
- set_status: fans manual override across all connected meshes
- set_summary: stubbed (broker protocol extension needed)
- list_peers: stubbed — lists connected mesh slugs + statuses
manager module holds Map<meshId, BrokerClient>, starts on MCP server
boot for every joined mesh in ~/.claudemesh/config.json.
new CLI command: seed-test-mesh injects a mesh row for dev testing.
also fixes a broker-side hello race: handleHello sent hello_ack before
the caller closure assigned presenceId, so clients sending right after
the ack hit the no_hello check. Fix: return presenceId, caller sets
closure var, THEN sends hello_ack. Queue drain is fire-and-forget now.
round-trip verified: two clients, A→B, push received with correct
senderPubkey + ciphertext. 44/44 broker tests still pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Adds the minimum ops surface area for a production broker without
over-engineering. All new config knobs are env-var driven with sane
defaults.
New modules:
- logger.ts: structured JSON logs (one line, stderr, ready for
Loki/Datadog ingestion without preprocessing)
- metrics.ts: in-process Prometheus counters + gauges, exposed at
GET /metrics. Tracks connections, messages, queue depth, TTL
sweeps, hook requests, DB health.
- rate-limit.ts: token-bucket rate limiter keyed by (pid, cwd).
Applied to POST /hook/set-status at 30/min default.
- db-health.ts: Postgres ping loop with exponential-backoff retry.
GET /health returns 503 while DB is down.
- build-info.ts: version + gitSha (from GIT_SHA env or `git rev-parse`
fallback) + uptime, surfaced on /health.
Behavior changes:
- Connection caps: MAX_CONNECTIONS_PER_MESH (default 100). Exceed →
close(1008, "capacity") + metric increment.
- Message size: MAX_MESSAGE_BYTES (default 65536). WS applies it via
`ws.maxPayload`. Hook POST bodies cap out with 413.
- Structured logs everywhere replacing the old `log()` helper.
- Env validation stricter: DATABASE_URL required + regex-checked for
postgres:// prefix.
New endpoints:
- GET /health → {status, db, version, gitSha, uptime}. 503 if DB down.
- GET /metrics → Prometheus text format.
Verified: 21/21 tests still pass. Hit /health + /metrics live —
gitSha resolves correctly via `git rev-parse --short HEAD` in dev.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Single-port refactor:
- Drop the BROKER_PORT+1 HTTP side-port. Use `ws` with noServer:true
and attach to a single node:http server via the 'upgrade' event.
- Clients connect to ws://host:PORT/ws
- Hook POSTs go to http://host:PORT/hook/set-status
- Health probe at http://host:PORT/health
- One port = one Traefik label, one cert, one deploy route. Matches
the Coolify/VPS operational constraints.
senderPubkey on push:
- drainForMember now joins mesh.message_queue → mesh.member to return
the sender's peerPubkey alongside each envelope. No extra round-trip,
no cache invalidation needed (option A from review).
- index.ts populates WSPushMessage.senderPubkey from the join result
instead of the empty-string placeholder.
- Receivers can now identify who sent a message directly from the push.
README updated with a routes table for the single-port layout.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- @claudemesh/broker package with bun dev/start scripts
- src/index.ts stub: WS server on BROKER_PORT, SIGTERM cleanup
- src/env.ts: Zod-validated env (BROKER_PORT, DATABASE_URL, STATUS_TTL_SECONDS, HOOK_FRESH_WINDOW_SECONDS)
- src/db.ts: re-exports Drizzle client from @turbostarter/db
- src/broker.ts + src/types.ts: placeholders for step 8 port
- README documents run commands, env vars, deploy targets
- tsconfig extends @turbostarter/tsconfig base
- eslint.config.js extends @turbostarter/eslint-config/base
Dependencies declared but not installed yet (ws, drizzle-orm, zod,
libsodium-wrappers + workspace deps). turbo.json unchanged: the global
dev task already has persistent=true + cache=false which is what the
broker needs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
