Add retry capability with exponential backoff for HTTP requests.
- Implement withRetry utility with configurable retry logic
- Exponential backoff: 1s, 2s, 4s, 8s (max)
- Maximum 3 retries by default
- Retry on network errors (ECONNREFUSED, ETIMEDOUT, etc.)
- Retry on 5xx server errors and 429 rate limit
- Do NOT retry on 4xx client errors
- Integrate with connection service for HTTP requests
Fixes#293
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Add DTO validation for FederationCapabilities to ensure proper structure.
- Create FederationCapabilitiesDto with class-validator decorators
- Validate boolean types for capability flags
- Validate string type for protocolVersion
- Update IncomingConnectionRequestDto to use validated DTO
- Add comprehensive unit tests for DTO validation
Fixes#295
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Add protocol version validation during connection handshake.
- Define FEDERATION_PROTOCOL_VERSION constant (1.0)
- Validate version on both outgoing and incoming connections
- Require exact version match for compatibility
- Log and audit version mismatches
Fixes#292
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Add test to verify workspace connection limit enforcement.
Default limit is 100 connections per workspace.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
