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python requests library websocket

Narkw Brahma

Narkw Brahma

• 1 min read

Python Requests Library Websocket

When it comes to creating and consuming APIs, Python has an excellent library called Requests. Requests is a powerful HTTP library that allows us to send HTTP/1.1 requests extremely easily. Requests also makes it easy to work with WebSockets.

What is Websocket?

WebSockets is a protocol that provides a full-duplex communication channel over a single TCP connection. This protocol is designed to work over HTTP ports 80 and 443 and supports bidirectional communication between client and server. WebSockets allows the server to push data to the client at any time.

Python Requests Library

Python Requests is a popular library for making HTTP requests in Python. It is a simple, yet powerful way to interact with APIs and websites.

Usage of Python Requests Library with Websocket

Python Requests library can be used with WebSockets by using the WebSocket library. The WebSocket library provides a simple and easy-to-use interface for working with WebSockets in Python.

Here is an example of how to use the Python Requests library with WebSockets:


import websocket

def on_message(ws, message):
    print(message)

def on_error(ws, error):
    print(error)

def on_close(ws):
    print("### closed ###")

def on_open(ws):
    ws.send("Hello, World!")

if __name__ == "__main__":
    websocket.enableTrace(True)
    ws = websocket.WebSocketApp("ws://echo.websocket.org/",
                              on_message = on_message,
                              on_error = on_error,
                              on_close = on_close)
    ws.on_open = on_open
    ws.run_forever()

The above code imports the WebSocket library and defines four functions: on_message(), on_error(), on_close(), and on_open().

The on_message() function is called when a message is received from the WebSocket server. The on_error() function is called when there is an error with the WebSocket connection. The on_close() function is called when the WebSocket connection is closed. Finally, the on_open() function is called when the WebSocket connection is opened.

The code then creates a WebSocketApp object with the URL of the WebSocket server and the four functions defined above. The code then enables tracing for the WebSocket connection and calls the run_forever() method to start the WebSocket connection.

Conclusion

The Python Requests library with WebSockets provides a simple and easy-to-use interface for working with WebSockets in Python. With this powerful combination, you can easily send and receive data over WebSockets in your Python programs.

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