Update implementation plan

docs/IMPLEMENTATION.md

@@ -68,28 +68,32 @@
 - [X] Create message validation and bounds checking
 - [X] Write unit tests for protocol components
 
-## Phase 5: Basic Server Architecture
+## Phase 5: TCP Server & Connection Management
+- [ ] Implement TCP server with connection handling
+- [ ] Add dual timeout protection:
+  - [ ] Connection timeout (max total connection time)
+  - [ ] Read timeout (max idle time between bytes - slowloris protection)
+- [ ] Implement proper connection lifecycle management
+- [ ] Create protocol state machine for request/response flow
+- [ ] Add graceful connection cleanup and error handling
+- [ ] Implement basic client for testing
+- [ ] Write integration tests for client-server communication
+
+## Phase 6: Basic Server Architecture
 - [ ] Set up structured logging (zerolog/logrus)
 - [ ] Set up metrics collection (prometheus)
 - [ ] Create configuration management
 - [ ] Integrate all components into server architecture
 
-## Phase 6: TCP Protocol & Connection Handling
-- [ ] Implement connection handler with proper error handling
-- [ ] Create protocol state machine
-- [ ] Implement connection lifecycle management
-- [ ] Add connection timeout and lifecycle management
-
-## Phase 7: Server Core & Request Handling
-- [ ] Implement TCP server with connection pooling
-- [ ] Create request router and handler dispatcher
-- [ ] Add connection timeout and lifecycle management
+## Phase 7: Advanced Server Features
+- [ ] Add connection pooling and advanced connection management
 - [ ] Implement graceful shutdown mechanism
+- [ ] Add health check endpoints
 - [ ] Add request/response logging middleware
 - [ ] Create health check endpoints
 - [ ] Write integration tests for server core
 
-## Phase 9: DDOS Protection & Rate Limiting
+## Phase 8: DDOS Protection & Rate Limiting
 - [ ] Implement IP-based connection limiting
 - [ ] Create rate limiting service with time windows
 - [ ] Add automatic difficulty adjustment based on load