Python WebSocket

Python WebSocket:

Python provides several libraries for implementing WebSocket functionality. One of the popular choices is the websockets library.

To use it, you need to install it first using pip:

pip install websockets

Once installed, you can use the following code to create a WebSocket server and handle client connections:

python

import asyncio
import websockets

# Define the WebSocket server behavior
async def websocket_handler(websocket, path):
    # Handle incoming messages
    async for message in websocket:
        # Process the message
        print(f"Received message: {message}")

        # Send a response
        response = f"Processed: {message}"
        await websocket.send(response)

# Start the WebSocket server
start_server = websockets.serve(websocket_handler, 'localhost', 8765)

# Run the server indefinitely
asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()

In the above example, the websocket_handler function is called for each client WebSocket connection. It receives the WebSocket connection and the URL path. Inside the handler, you can process incoming messages, perform any required logic, and send responses back to the client.

To connect to this WebSocket server from a client, you can use the websockets library as well.

Here’s an example of a simple WebSocket client:

python

import asyncio
import websockets

async def connect_websocket():
    # Connect to the WebSocket server
    async with websockets.connect('ws://localhost:8765') as websocket:
        # Send a message
        await websocket.send("Hello, server!")

        # Receive and print the response
        response = await websocket.recv()
        print(f"Received response: {response}")

# Run the WebSocket client
asyncio.get_event_loop().run_until_complete(connect_websocket())

In the client code, the connect_websocket function establishes a connection to the server at the specified URL (ws://localhost:8765 in this case). It sends a message to the server and waits for a response, which is then printed.

You can run the server and client code separately in different Python scripts or in separate parts of the same script, depending on your requirements. Remember to start the server before running the client so that the client can connect successfully.

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Python WebSocket

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