(Chilkat2-Python) Check Internet Connectivity

Demonstrates an efficient way to test for Internet connectivity.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS

import sys
import chilkat2

success = False

socket = chilkat2.Socket()
# 1. Use a reliable Anycast IP. 
#    8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) are the industry standards.
targetIp = "8.8.8.8"

# 2. Use Port 53 (DNS). 
#    DNS servers typically listen on TCP Port 53 as well as UDP. 
#    (Alternatively, use port 443 if you suspect port 53 is blocked).
port = 53

# 3. Disable SSL (0). 
#    We are not doing a handshake, just a TCP connection.
ssl = False

# 4. Short Timeout (1500ms).
#    If you can't reach Google in 1.5 seconds, the connection is 
#    likely too poor for practical use anyway.
timeoutMs = 1500

# Connect
success = socket.Connect(targetIp,port,ssl,timeoutMs)
if (success == False):
    print(socket.LastErrorText)
    sys.exit()

socket.Close(10)

print("We have Internet connectivity.")