1st iteration fixes

[PavelLinearB]

✨ PR Description

Purpose: Implements a basic client-server chat application using socket programming and threading in Python.

Main changes:

• Created server.py with Client class handling multiple client connections and message broadcasting
• Added client.py with socket connection and separate threads for sending/receiving messages
• Implemented basic message relay system with UTF-8 encoding/decoding between connected clients

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We’d love your feedback! 🚀}

[gitstream-cm]

✨ PR Review

Maintainability - src/server/server.py (Line 34-40)

Details:

Problem: Global connections list is modified without thread safety
Fix: Add mutex lock for connections list access
Why: Prevents race conditions when multiple threads modify the list

+ connection_lock = threading.Lock()

                print("Client " + str(self.address) + " has disconnected")
                self.signal = False
+               with connection_lock:
                    connections.remove(self)
                break

Performance - src/client/client.py & src/server/server.py (Line 10 & 33)

Details:

Problem: Fixed 32-byte buffer size limits message length and wastes bandwidth
Fix: Implement proper message framing with length prefix
Why: Allows variable length messages while maintaining efficiency

- data = socket.recv(32)
+ msg_size = int.from_bytes(socket.recv(4), 'big')
+ data = socket.recv(msg_size)

Potential Bug - src/client/client.py & src/server/server.py (Lines 9-14 & 32-37)

Details:

Problem: Bare except clauses mask important errors
Fix: Catch specific exceptions
Why: Allows proper handling of different error conditions

        try:
            data = socket.recv(32)
            print(str(data.decode('utf-8')))
-       except:
+       except (socket.error, ConnectionResetError) as e:
            print("You have been disconnected from the server")
            signal = False
            break

Generated by LinearB AI and added by gitStream

[gitstream-cm]

✨ PR Review

Performance - src/client/client.py

Details:

Problem: Fixed small buffer size (32 bytes) can cause message truncation
Fix: Increase buffer size and handle larger messages properly
Why: Ensures complete message transmission and prevents data loss

    while signal:
        try:
-            data = socket.recv(32)
+            data = socket.recv(4096)
            print(str(data.decode('utf-8')))

Security - src/client/client.py

Details:

Problem: No cleanup of socket resources on program exit
Fix: Add proper socket closure in finally block
Why: Prevents resource leaks and ensures proper cleanup

try:
    while True:
        message = input()
        sock.sendall(str.encode(message))
+except KeyboardInterrupt:
+    print("\nDisconnecting from server...")
+finally:
+    sock.close()

Performance - src/server/server.py

Details:

Problem: Fixed small buffer size (32 bytes) can cause message truncation
Fix: Increase buffer size to handle larger messages
Why: Prevents message truncation and data loss

    def run(self):
        while self.signal:
            try:
-                data = self.socket.recv(32)
+                data = self.socket.recv(4096)
            except:
                print("Client " + str(self.address) + " has disconnected")

Maintainability - src/server/server.py

Details:

Problem: Global variables for connection management are unsafe in threaded environment
Fix: Encapsulate connection management in a class
Why: Improves thread safety and maintainability

-connections = []
-total_connections = 0
+class ConnectionManager:
+    def __init__(self):
+        self.connections = []
+        self.total_connections = 0
+        self._lock = threading.Lock()
+    
+    def add_connection(self, client):
+        with self._lock:
+            self.connections.append(client)
+            self.total_connections += 1
+
+    def remove_connection(self, client):
+        with self._lock:
+            self.connections.remove(client)

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We’d love your feedback! 🚀}