Client                                                Server
------                                                ------

 Record 0                  -------->
 ClientHello
 (message_seq=0)

                             X<-----                 Record 0
                             (lost)               ServerHello
                                              (message_seq=0)
                                                     Record 1
                                          EncryptedExtensions
                                              (message_seq=1)
                                                  Certificate
                                              (message_seq=2)


                           <--------                 Record 2
                                            CertificateVerify
                                              (message_seq=3)
                                                     Finished
                                              (message_seq=4)

 Record 1                  -------->
 ACK []


                           <--------                 Record 3
                                                  ServerHello
                                              (message_seq=0)
                                          EncryptedExtensions
                                              (message_seq=1)
                                                  Certificate
                                              (message_seq=2)

                           <--------                 Record 4
                                            CertificateVerify
                                              (message_seq=3)
                                                     Finished
                                              (message_seq=4)


 Record 2                  -------->
 Certificate
 (message_seq=1)
 CertificateVerify
 (message_seq=2)
 Finished
 (message_seq=3)

                           <--------               Record 5
                                                    ACK [2]