tls.handshake.type ==  1  // Client Hello
tls.handshake.type ==  2  // Server Hello
tls.handshake.type ==  4  // NewSessionTicket
tls.handshake.type == 11  // Certificate
tls.handshake.type == 13  // CertificateRequest
tls.handshake.type == 14  // ServerHelloDone
tls.handshake.ciphersuite // Cipher Suites
tls.handshake.extension.type == 0  // SNI
tls.handshake.extension.type == 16 // ALPN