Client Server ClientHello, client_certificate_type=(1609Dot2), server_certificate_type=(1609Dot2, X509,RawPublicKey), -----------> ServerHello, {EncryptedExtensions} {client_certificate_type=1609Dot2} {server_certificate_type=X509} {CertificateRequest} {Certificate} {CertificateVerify} {Finished} <--------- [Application Data] {Finished} ---------> [Application Data] <--------> [Application Data]