docs/IMPLEMENTATION.md

@@ -60,22 +60,27 @@
 - [X] Add workflow tests with real PoW implementations
 - [X] Add unsuccessful flow tests for invalid solutions
 
-## Phase 4: Basic Server Architecture
+## Phase 4: Binary Protocol Implementation
+- [ ] Implement binary message protocol codec with Reader/Writer abstraction
+- [ ] Create protocol message types and structures
+- [ ] Add message serialization/deserialization (JSON)
+- [ ] Implement protocol parsing with proper error handling
+- [ ] Create message validation and bounds checking
+- [ ] Write unit tests for protocol components
+
+## Phase 5: Basic Server Architecture
 - [ ] Set up structured logging (zerolog/logrus)
 - [ ] Set up metrics collection (prometheus)
 - [ ] Create configuration management
 - [ ] Integrate all components into server architecture
 
-## Phase 5: TCP Protocol Implementation
-- [ ] Implement binary message protocol codec
-- [ ] Create protocol message types and structures
+## Phase 6: TCP Protocol & Connection Handling
 - [ ] Implement connection handler with proper error handling
-- [ ] Add message serialization/deserialization (JSON)
 - [ ] Create protocol state machine
 - [ ] Implement connection lifecycle management
-- [ ] Write unit tests for protocol components
+- [ ] Add connection timeout and lifecycle management
 
-## Phase 6: Server Core & Request Handling
+## Phase 7: Server Core & Request Handling
 - [ ] Implement TCP server with connection pooling
 - [ ] Create request router and handler dispatcher
 - [ ] Add connection timeout and lifecycle management
@@ -84,7 +89,7 @@
 - [ ] Create health check endpoints
 - [ ] Write integration tests for server core
 
-## Phase 7: DDOS Protection & Rate Limiting
+## Phase 9: DDOS Protection & Rate Limiting
 - [ ] Implement IP-based connection limiting
 - [ ] Create rate limiting service with time windows
 - [ ] Add automatic difficulty adjustment based on load
@@ -93,7 +98,7 @@
 - [ ] Add monitoring for attack detection
 - [ ] Write tests for protection mechanisms
 
-## Phase 8: Observability & Monitoring
+## Phase 9: Observability & Monitoring
 - [ ] Add structured logging throughout application
 - [ ] Implement metrics for key performance indicators:
   - [ ] Active connections count
@@ -105,7 +110,7 @@
 - [ ] Add error categorization and reporting
 - [ ] Implement health check endpoints
 
-## Phase 9: Configuration & Environment Setup
+## Phase 10: Configuration & Environment Setup
 - [ ] Create configuration structure with validation
 - [ ] Support environment variables and config files
 - [ ] Add configuration for different environments (dev/prod)
@@ -113,7 +118,7 @@
 - [ ] Create deployment configuration templates
 - [ ] Add configuration validation and defaults
 
-## Phase 10: Client Implementation
+## Phase 11: Client Implementation
 - [ ] Create client application structure
 - [ ] Implement PoW solver algorithm
 - [ ] Create client-side protocol implementation
@@ -123,7 +128,7 @@
 - [ ] Add client metrics and logging
 - [ ] Write client unit and integration tests
 
-## Phase 11: Docker & Deployment
+## Phase 12: Docker & Deployment
 - [ ] Create multi-stage Dockerfile for server
 - [ ] Create Dockerfile for client
 - [ ] Create docker-compose.yml for local development
@@ -132,7 +137,7 @@
 - [ ] Add environment-specific configurations
 - [ ] Create deployment documentation
 
-## Phase 12: Testing & Quality Assurance
+## Phase 13: Testing & Quality Assurance
 - [ ] Write comprehensive unit tests (>80% coverage):
   - [ ] PoW algorithm tests
   - [ ] Protocol handler tests
@@ -147,7 +152,7 @@
 - [ ] Add benchmark tests for performance validation
 - [ ] Create stress testing scenarios
 
-## Phase 13: Documentation & Final Polish
+## Phase 14: Documentation & Final Polish
 - [ ] Write comprehensive README with setup instructions
 - [ ] Create API documentation for all interfaces
 - [ ] Add inline code documentation
@@ -156,7 +161,7 @@
 - [ ] Add performance tuning recommendations
 - [ ] Create monitoring and alerting guide
 
-## Phase 14: Production Readiness Checklist
+## Phase 15: Production Readiness Checklist
 - [ ] Security audit of all components
 - [ ] Performance benchmarking and optimization
 - [ ] Memory leak detection and prevention