Network Working Group                                          Vint Cerf
Request for Comments: 13                                       UCLA
                                                          20 August 1969




Referring to NWG/RFC: 11, it appears that file transmissions over
auxiliary connections will require some mechanism to specify "END-OF-
FILE."  It is proposed that a length 0 (zero) message be used for this
purpose.  Figure 1 shows the format:






|<---32 bits--->|<---32 bits--->|<----16 bits---->|<------?------>|
+---------------+---------------+-----------------+---------------+
|    leader     |    marking    |    checksum     |    padding    |
+---------------+---------------+-----------------+---------------+



                                Figure 1

                      Zero Text Length EOF Message




       [ This RFC was put into machine readable form for entry ]
      [ into the online RFC archives by Michael Brunnbauer 1/97 ]