Java

HTTP - Verify Server is a Trusted Root CA

See more HTTP Examples

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. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.TrustedRoots;

public class ChilkatExample {

    public static void main(String[] args) {
        boolean success = false;

        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        success = false;

        //  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.
        String url = "https://animals.nationalgeographic.com/animals/invertebrates/starfish/";

        Http http = new Http();

        //  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.setRequireSslCertVerify(true);

        //  Do the HTTPS page fetch (through the SSH tunnel)
        String html;
        try {
            html = http.quickGetStr(url);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("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 trustedRoots = new TrustedRoots();

        //  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.setTrustSystemCaRoots(true);

        //  Activate the trusted roots globally for all Chilkat objects.
        //  This call really shouldn't fail, so we're not checking the return value.
        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.
        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..)
        try {
            html = http.quickGetStr(url);
            System.out.println(http.getLastErrorText());
            System.out.println("Hmmm... we did not fail as expected?");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            System.out.println("Good, the HTTP request failed as expected.");
        }
    }
}