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IthasTerminatedAbnormaly

When working with Binance REST API using WinHTTP, you encounter a situation where requests fail due to abnormal termination of the server connection. This error code 12030 usually indicates that the connection was terminated unexpectedly by the server. In this article, we will discuss how to force close the connection after receiving such an error.

Understanding Binance REST API Connection

Before diving into the solution of forcing a connection to be closed, it is important to understand how Binance REST API handles connections with WinHTTP. When using WinHTTP as a proxy server or in the context of an application, you may need to establish multiple connections to handle different scenarios simultaneously. These connections can get closed after use if not managed properly.

Solution: Force close the connection

To force close the connection after encountering error code 12030, follow these steps:

1. Establish connections and collect information

First, make sure there are no errors when establishing the connection. If all goes well, you may want to log or print information about each established connection for analysis purposes.

import requests









Define the API endpoint URL and parameters
url = "

Initialize a dictionary with connection details
connection_details = {
'method': 'GET',
'params': [1, 2, 3], 
Override these values ​​as needed
}
response = requests.get(url, params=connection_details)
if response.status_code == 200:
print("Connection established successfully.")
else:
print(f"Connection failed: {response.text}")

2. Close the connection

If an error occurs during the connection process and a solution is not immediately apparent, consider closing the established connections. This step is crucial to maintain efficiency and minimize resource usage.

import os

Get a list of currently open connections
open_connections = []
for i in range(1, 21): 
Replace with an actual number or logic to close all but a specified number
try:
conn_details = {
'method': 'GET',
'params': [i], 
Replace values ​​as needed
}
response = requests.get(url + str(i), params=conn_details)
if response.status_code == 200:
print(f"Connection {i} established.")
open_connections.append(conn_details['url'])
except Exception as e:

Log an error and continue with the next connection
print(f"Connection {i} failed to establish: {str(e)}")

Close a specified number of connections (in this case, 18)
for url in open_connections[:len(open_connections) - len([conn['url'] for conn in open_connections]) // 2]:
os.system("taskkill /im " + url)
print(f"Connections closed. Remaining: {len(open_connections)}")

Conclusion

Forcing a connection to close is a last resort that should be used with caution to minimize unnecessary resource usage and maintain application performance. Always log errors for troubleshooting purposes, making sure you understand the cause of any issues encountered while establishing or closing a connection.

Disclaimer: Before implementing this solution in production environments, ensure that the system can handle temporary process termination (e.g., via the Windows Task Manager). Be careful when using this method as it may have unintended consequences on application behavior.

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