Hello Manoj,
Yes we can skip this by using normal HTTPS call without using client certificate. You can test your connection in that way, it is just HTTPS call there won't be any certificate validation, here we have to 443 here the certificate acts as normal SSL certificate not as CA signed client certificate. for your test you can test with ssl certificate whether you could able to get data from other systems.
BTW here you are trying the make a handshake with certificate which means you should use 8443 and 443. 8443 is for certificate validation.
Any more clarifications?
Regards,
Balanand S