🔐 Wave 146: TLS/mTLS Implementation - API Gateway ↔ Backtesting Service
## Summary
Fixed transport error between API Gateway and Backtesting Service by implementing
proper TLS/mTLS with X.509 v3 certificates. Connection now operational.
## Root Cause (Wave 146 Analysis)
- API Gateway was using HTTP, Backtesting Service configured for HTTPS
- Initial certificates were X.509 v1 (not supported by rustls/tonic)
- Rustls requires X.509 v3 with proper extensions (SAN, Key Usage)
## Solution Implemented
1. **Generated X.509 v3 Certificates**:
- Server cert: CN=foxhunt-services with SAN (backtesting_service, localhost)
- Client cert: CN=api-gateway-client with clientAuth extension
- Both signed by Foxhunt-CA (valid until 2035)
2. **TLS Client Implementation** (backtesting_proxy.rs):
- Added Certificate, ClientTlsConfig, Identity imports
- Implemented mTLS support with CA + client cert validation
- Added graceful fallback for HTTP connections
- Domain name validation matches server cert CN
3. **Docker Configuration** (docker-compose.yml):
- Changed BACKTESTING_SERVICE_URL to https://
- Added TLS_CERT_PATH, TLS_KEY_PATH, TLS_CA_PATH to Backtesting Service
- Configured API Gateway with client cert paths
4. **Enhanced Error Logging** (main.rs):
- Added detailed TLS initialization logging
- Better error messages for connection failures
## Test Results
**Service Health**: 15 passed, 11 failed (JWT auth issues, not TLS)
**Backtesting**: 15 passed, 8 failed (JWT auth issues, not TLS)
**TLS Connection**: ✅ WORKING (zero transport errors)
Note: All failures are pre-existing JWT authentication issues, not TLS-related.
## Files Modified
- docker-compose.yml: TLS env vars for both services
- services/api_gateway/src/grpc/backtesting_proxy.rs: +120 lines (TLS client)
- services/api_gateway/src/main.rs: Enhanced logging
- services/api_gateway/src/grpc/backtesting_proxy_bench.rs: Updated signature
- certs/ca/ca-cert.srl: Serial number incremented
- WAVE_146_FINAL_REPORT.md: Complete analysis and results
## Certificate Generation (Not in Git)
X.509 v3 certificates generated locally (gitignored for security):
- certs/server-cert.pem, certs/server-key.pem (Backtesting Service)
- certs/client-cert.pem, certs/client-key.pem (API Gateway)
To regenerate in deployment:
```bash
# See WAVE_146_FINAL_REPORT.md for full certificate generation commands
openssl req -new -x509 -days 3650 -extensions v3_req ...
```
## Production Status
✅ TLS/mTLS: OPERATIONAL
⚠️ JWT Auth: Pre-existing issues (requires Wave 147)
✅ Services: 4/4 healthy
✅ API Gateway: Zero compilation errors
⚠️ Trading Service: Pre-existing compilation errors (Wave 147)
## Agents Executed
- Agent 354-360B: TLS implementation, certificate generation, debugging
🎉 Generated with Claude Code
3315946943