INTEGER FUNCTION SEOF (X)
C
C     ****************************************************************
C
C              KERMIT for the MODCOMP MAXIV operating system
C
C        Compliments of:
C
C                         SETPOINT, Inc.
C                      10245 Brecksville Rd.
C                      Brecksville, Ohio 44141
C
C
C      KERMIT is a copyrighted protocol of Columbia Univ. The authors
C      of this version hereby grant permission to copy this software
C      provided that it is not used for an explicitly commercial
C      purpose and that proper credit be given. SETPOINT, Inc. makes
C      no warranty whatsoever regarding the accuracy of this package
C      and will assume no liability resulting from it's use.
C
C     ****************************************************************
C
C     Abstract:  Send an EOF packet to the other Kermit.
C
C     MODIFICATION HISTORY
C
C     BY            DATE     REASON            PROGRAMS AFFECTED
C
C     ****************************************************************
C
C     Author:  Rick Burke           Version: A.0    Date: Sep-86
C
C     Calling Parameters:
C
C     R    X            - Dummy argument required by FORTRAN
C
C     ****************************************************************
C
C     Messages generated by this module :  None
C
C     ****************************************************************
C
C     Subroutines called directly :  DGETLI, MOD, PACK, POSUSL,
C                                    PUTLIN, RPACK, SCOPY, SPACK
C
C     ****************************************************************
C
C     Files referenced :  None
C
C     ****************************************************************
C
C     Local variable definitions :
C
C     AONE         - Index variable
C     BONE         - Index variable
C     FOUND        - Flag for existing file found
C     LEN          - Length of received packet
C     NUM          - Number of received packet
C     STATUS       - Status of received packet
C     TEMP         - Function code value from DGETLI
C     TNUM         - Packet number of transmitted packet
C     TV1          - Temporary variable
C     TV2          - Temporary variable
C     TV3          - Temporary variable
C     ALIN(132)    - Line buffer with file name read from
C                    scratch partition
C     FNAM(4)      - Packed file name array
C
C     ****************************************************************
C
C     Commons referenced :  KERCOM, KERPMC and UFTTBC local commons
C
C     ****************************************************************
C
C     (*$END.DOCUMENT*)
C
C     ****************************************************************
C     *                                                              *
C     *         D I M E N S I O N   S T A T E M E N T S              *
C     *                                                              *
C     ****************************************************************
C
      IMPLICIT INTEGER (A-Z)
C
      INTEGER*2 ALIN(132),     FNAM(4)
C
C     ****************************************************************
C     *                                                              *
C     *         T Y P E   S T A T E M E N T S                        *
C     *                                                              *
C     ****************************************************************
C
      LOGICAL*2   FOUND
C
C     ****************************************************************
C     *                                                              *
C     *         C O M M O N   S T A T E M E N T S                    *
C     *                                                              *
C     ****************************************************************
C
      INCLUDE USL/KERCOM
      INCLUDE USL/KERPMC
      INCLUDE USL/UFTTBC
C
C     ****************************************************************
C     *                                                              *
C     *         E Q U I V A L E N C E   S T A T E M E N T S          *
C     *                                                              *
C     ****************************************************************
C
C
C     ****************************************************************
C     *                                                              *
C     *         D A T A   S T A T E M E N T S                        *
C     *                                                              *
C     ****************************************************************
C
C
C     ****************************************************************
C
C     Code starts here :
C
C----->  Assume an error.
C
      SEOF = BIGA
C
C----->  Check if maximum number of retries exceeded.
C
      IF (NUMTRY .GT. MAXTRY) RETURN
      NUMTRY = NUMTRY+1
C
C----->  Send the EOF packet.
C
      AONE = 1
      BONE = 1
      TNUM = N
      TV1 = BIGZ
      TV2 = 0
      TV3 = 0
      CALL SPACK (TV1,TNUM,TV2,TV3)
      STATUS = RPACK (LEN,NUM,RECPKT)
C
C----->  Branch if response was not a NAK.
C
      IF (STATUS .NE. BIGN) GO TO 10
      IF (N .NE. NUM-1) SEOF = STATE
      RETURN
   10 CONTINUE
C
C----->  Branch if response was not an ACK.
C
      IF (STATUS .NE. BIGY) GO TO 80
      IF (N .EQ. NUM) GO TO 20
      SEOF = STATE
      RETURN
   20 CONTINUE
C
C----->  Reset the retry counter and bump the packet number.
C
      NUMTRY = 0
      N = MOD (N+1,64)
   30 CONTINUE
C
C----->  Check whether there is another file to send.
C
      SCRLUN = IUFT(2,9)
      READ (SCRLUN,1000,END=35) FNAM
 1000 FORMAT (4A2)
      GO TO 40
   35 CONTINUE
      SEOF = BIGB
      RETURN
   40 CONTINUE
C
C----->  There is another file to send, make sure that it exists.
C
      CALL POSUSL (IUFT(2,7),FNAM,FOUND)
      IF (FOUND) GO TO 50
C
C------>  Requested file not present.
C
      IF (HOSTON .NE. NO) GO TO 30
      WRITE (LOCALO,1010) FNAM
 1010 FORMAT (' FILE NOT FOUND--> ',4A2)
      GO TO 30
   50 CONTINUE
C
C----->  We have another valid file to send.
C
      DO 60 I=1,8
      IWORD = FNAM((I+1)/2)
      IF (MOD(I,2) .NE. 0) FILNAM(I) = ISHFT (IWORD,-8)
      IF (MOD(I,2) .EQ. 0) FILNAM(I) = IAND (IWORD,4Z00FF)
      IF (FILNAM(I) .EQ.     0 .OR.
     >    FILNAM(I) .EQ. BLANK     ) GO TO 70
   60 CONTINUE
      I = 9
   70 CONTINUE
      FILNAM(I) = LF
      FILNAM(I+1) = EOS
      SEOF = BIGF
      RETURN
   80 CONTINUE
C
C----->  If there was a checksum error, try again.
C
      IF (STATUS .EQ. BAD) SEOF = STATE
      RETURN
      END