(CkPython) HTTP - Verify Server is a Trusted Root CA

Demonstrates how to only allow connections to an HTTP server having a certificate with a root that is in our list of trusted CA root certificates.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

# Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
# by calling UnlockBundle.  It requires a Bundle unlock code.
chilkatGlob = chilkat.CkGlobal()
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
if (success != True):
    print(chilkatGlob.lastErrorText())
    sys.exit()

#  On my particular system, the root CA cert for this URL is not pre-installed.
#  Note: This may be different for you.
#  Also, this example was written on 29-May-2015.  This URL was valid at the time,
#  but may not be valid at a future date.
url = "https://animals.nationalgeographic.com/animals/invertebrates/starfish/"

http = chilkat.CkHttp()

#  Require that the SSL/TLS server certificate is not expired,
#  and that the certificate signature is valid.
#  This does not ensure that it has a chain of authentication to
#  a trusted root.  To ensure that, the TrustedRoots object (below) is required.
http.put_RequireSslCertVerify(True)

#  Do the HTTPS page fetch (through the SSH tunnel)
html = http.quickGetStr(url)
if (http.get_LastMethodSuccess() != True):
    print(http.lastErrorText())
    sys.exit()

print("The HTTP GET was successful.")

#  Now let's require that HTTP requests to SSL/TLS servers that don't have trusted CA roots
#  should fail.
trustedRoots = chilkat.CkTrustedRoots()

#  Indicate that we will trust any pre-installed certificates on this system.
#  (The meaning of pre-installed certificates depends on the operating system, and in
#  some environments there is no such thing as pre-installed certificates.  See the reference
#  documentation for the TrustedRoots class.)
trustedRoots.put_TrustSystemCaRoots(True)

#  Activate the trusted roots globally for all Chilkat objects.
#  This call really shouldn't fail, so we're not checking the return value.
success = trustedRoots.Activate()

#  Given that our previous HTTP GET likely kept the connection open,
#  make sure that all HTTP connections are closed before re-trying.
#  Otherwise, we'll simply be re-using the pre-existing connection.
success = http.CloseAllConnections()

#  Now let's try fetching the URL again.  It should fail this time because
#  there is a requirement that the SSL/TLS server certificate must have a trusted root,
#  and the trusted root for this URL is not installed on my system (but may be different for you..)
html = http.quickGetStr(url)
if (http.get_LastMethodSuccess() != True):
    print(http.lastErrorText())
    print("Good, the HTTP request failed as expected.")
else:
    print(http.lastErrorText())
    print("Hmmm... we did not fail as expected?")