CkPython

Check Internet Connectivity

See more Socket/SSL/TLS Examples

Demonstrates an efficient way to test for Internet connectivity. CkPython

import sys
import chilkat

success = False

socket = chilkat.CkSocket()
# 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.")