Java SSL: how to disable hostname verification

Question

Is there a way for the standard java SSL sockets to disable hostname verfication for ssl connections with a property? The only way I found until now, is to write a hostname verifier which returns true all the time.

Weblogic provides this possibility, it is possible to disable the hostname verification with the following property:

-Dweblogic.security.SSL.ignoreHostnameVerify

Answer 1

It should be possible to create custom java agent that overrides default HostnameVerifier:

import javax.net.ssl.*;
import java.lang.instrument.Instrumentation;

public class LenientHostnameVerifierAgent {
    public static void premain(String args, Instrumentation inst) {
        HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
            public boolean verify(String s, SSLSession sslSession) {
                return true;
            }
        });
    }
}

Then just add -javaagent:LenientHostnameVerifierAgent.jar to program's java startup arguments.