Added multithreaded server02 for handling query and insert requests, utility functions for byte operations in data.c, updated tests, and extended project configuration.

server02_socket_communication_test.py

@@ -0,0 +1,66 @@
+import socket
+import struct
+from time import sleep
+
+def create_insert_message(timestamp: int, price: int) -> bytes:
+    """Create a 9-byte insert message."""
+    return struct.pack('!cii', b'I', timestamp, price)
+
+def create_query_message(mintime: int, maxtime: int) -> bytes:
+    """Create a 9-byte query message."""
+    return struct.pack('!cii', b'Q', mintime, maxtime)
+
+def receive_response(sock: socket.socket) -> int:
+    """Receive and decode a 4-byte response."""
+    data = sock.recv(4)
+    return struct.unpack('!i', data)[0]
+
+def run_test():
+    # Connect to the server
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    sock.connect(('localhost', 40000))  # Using the same port as your other servers
+    
+    # Test case 1: Insert some values
+    test_data = [
+        (12345, 101),  # (timestamp, price)
+        (12346, 102),
+        (12347, 100),
+        (40960, 5),
+    ]
+    
+    print("Inserting test data...")
+    for timestamp, price in test_data:
+        message = create_insert_message(timestamp, price)
+        sock.send(message)
+        print(f"Inserted: timestamp={timestamp}, price={price}")
+        sleep(0.1)  # Small delay to avoid overwhelming the server
+    
+    # Test case 2: Query for mean price
+    mintime = 12288
+    maxtime = 16384
+    print(f"\nQuerying mean price between {mintime} and {maxtime}...")
+    
+    query = create_query_message(mintime, maxtime)
+    sock.send(query)
+    
+    # Get response
+    mean_price = receive_response(sock)
+    print(f"Received mean price: {mean_price}")
+    
+    # Test case 3: Query with no data in range
+    print("\nTesting query with no data in range...")
+    query = create_query_message(1, 1000)
+    sock.send(query)
+    mean_price = receive_response(sock)
+    print(f"Received mean price (should be 0): {mean_price}")
+    
+    # Clean up
+    sock.close()
+
+if __name__ == "__main__":
+    try:
+        run_test()
+    except ConnectionRefusedError:
+        print("Could not connect to server. Make sure it's running on port 40000.")
+    except Exception as e:
+        print(f"An error occurred: {e}")