How to close websocket/stream using ctrl-c ?

Hi! Firstly thank you for this awesome project.

Sorry, if I ask, but I don’t understand how to stop a running script in while Trueloop with ctrl-c and close everything properly. I tried to use the following code , however, the stream keeps printing and doesn’t stop the process. What is the proper and clean way to do this?

from binance.websockets import BinanceSocketManager
from unicorn_fy.unicorn_fy import UnicornFy
from unicorn_binance_websocket_api.unicorn_binance_websocket_api_manager import BinanceWebSocketApiManager

import logging
import os
import time
import threading

def print_stream_data_from_stream_buffer(binance_websocket_api_manager):
    while True:
        if binance_websocket_api_manager.is_manager_stopping():
            exit(0)
        oldest_stream_data_from_stream_buffer = binance_websocket_api_manager.pop_stream_data_from_stream_buffer()
        if oldest_stream_data_from_stream_buffer is False:
            time.sleep(0.01)
        else:
            try:
                # remove # to activate the print function:
                print(oldest_stream_data_from_stream_buffer)
            except Exception:
                # not able to process the data? write it back to the stream_buffer
                binance_websocket_api_manager.add_to_stream_buffer(oldest_stream_data_from_stream_buffer)


if __name__ == '__main__':
    try:
        binance_websocket_api_manager = BinanceWebSocketApiManager(exchange="binance.com")
        # start a worker process to process to move the received stream_data from the stream_buffer to a print function
        worker_thread = threading.Thread(target=print_stream_data_from_stream_buffer, args=(binance_websocket_api_manager,))
        worker_thread.start()

        kline_stream_id = binance_websocket_api_manager.create_stream(['kline', 'kline_1m'], ['btcusdt'])

    except KeyboardInterrupt:
        binance_websocket_api_manager.stop_stream(kline_stream_id)
        binance_websocket_api_manager.stop_manager_with_all_streams()

[mfiro]

This solves the problem:

if __name__ == '__main__':
    binance_websocket_api_manager = BinanceWebSocketApiManager(exchange="binance.com")

    # start a worker process to process to move the received stream_data from the stream_buffer to a print function
    worker_thread = threading.Thread(target=print_stream_data_from_stream_buffer, args=(binance_websocket_api_manager,))
    worker_thread.start()
    kline_stream_id = binance_websocket_api_manager.create_stream(['kline', 'kline_1m'], ['btcusdt'])

    try:
        while True:
            time.sleep(60)
    
    except KeyboardInterrupt:
        binance_websocket_api_manager.stop_stream(kline_stream_id)
        binance_websocket_api_manager.stop_manager_with_all_streams()

The exception is also caught properly. The time.sleep() amount doesn’t matter also in functionality as far as I’ve experienced.

[oliver-zehentleitner]

Thank you very much for sharing your solution! I think i am going to put it into an example! best regards!