Havn't dug too deep, but I think you need (on the Server): 
SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT

[download]
otherwise, it will not VERIFY the cert.

        ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

In reply to Re: Make IO::Socket:SSL refuse connections without client certificate by NetWallah
in thread [SOLVED] Make IO::Socket:SSL refuse connections without client certificate by chepati

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