ConnectionRefusedError: Connection Refused

Why This Happens

This error occurs when no server is listening on the specified port. Common causes: server not running, wrong host/port, firewall blocking, or server still starting up.

The Problem

import requests
response = requests.get('http://localhost:8000/api')

The Fix

import requests
try:
    response = requests.get('http://localhost:8000/api', timeout=5)
except requests.ConnectionError:
    print('Server is not running')

Step-by-Step Fix

1. 1

   Check if server is running

   Verify with ps aux or check the server terminal.

2. 2

   Verify host and port

   Ensure correct host and port number.

3. 3

   Check firewall

   Try curl or telnet to test connectivity.