- Remove TCP listener support from gRPC server; Unix socket is now the
only transport for the admin API (access controlled via filesystem
permissions)
- Add standard gRPC health check service (grpc.health.v1.Health)
- Implement MCPROXY_* environment variable overrides for config
- Create client/mcproxy package with full API coverage and tests
- Update ARCHITECTURE.md and dev config (srv/mc-proxy.toml)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Rate limiting: per-source-IP connection rate limiter in the firewall layer
with configurable limit and sliding window. Blocklisted IPs are rejected
before rate limit evaluation to avoid wasting quota. Unix socket: the gRPC
admin API can now listen on a Unix domain socket (no TLS required), secured
by file permissions (0600), as a simpler alternative for local-only access.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Rewrite README with project overview and quick start. Add RUNBOOK with
operational procedures and incident playbooks. Fix Dockerfile for Go 1.25
with version injection. Add docker-compose.yml. Clean up golangci.yaml
for mc-proxy. Add server tests (10) covering the full proxy pipeline with
TCP echo backends, and grpcserver tests (13) covering all admin API RPCs
with bufconn and write-through DB verification.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Rename proto/gen directories from mc-proxy to mc_proxy for valid protobuf
package naming. Add CLI status subcommand for querying running instance
health via gRPC. Add systemd backup service/timer and backup pruning
script. Add buf.yaml and proto-lint Makefile target. Add shutdown_timeout
config field.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Database (internal/db) stores listeners, routes, and firewall rules with
WAL mode, foreign keys, and idempotent migrations. First run seeds from
TOML config; subsequent runs load from DB as source of truth.
gRPC admin API now writes to the database before updating in-memory state
(write-through cache pattern). Adds snapshot command for VACUUM INTO
backups. Refactors firewall.New to accept raw rule slices instead of
config struct for flexibility.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Layer 4 TLS SNI proxy with global firewall (IP/CIDR/GeoIP blocking),
per-listener route tables, bidirectional TCP relay with half-close
propagation, and a gRPC admin API (routes, firewall, status) with
TLS/mTLS support.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
