Software Reference Manual - NetEx

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SENDING SENDING SENDING CONTROL BLOCK RECORD MODULE MODULE MODULE ------------------------------------------------------------------------------------------------------------ Transfer begins: Issue SREAD(msgbuf) Call BMOD(bufl). +---------------------------------+ Check abnormal end indication. Get start of next logical record. Check block left >= max rec size Call RMOD(rec ptr) +---------------------------------+ Read record into provided area. Check for I/O errors; return msg if error. +---------------------------------+ Call record module I until block full. File read. Return message if passed from RMOD. +---------------------------------+ Process message if returned. Issue SWRITE(bufl). Call BMOD(buf2). +---------------------------------+ +---------------------------------+ +---------------------------------+ +---------------------------------+ Process message if returned. Wait on bufl write. Check for msgs or errors on SREAD. Issue SWRITE(buf2). Call BMOD(bufl). +---------------------------------+ +---------------------------------+ . . . . . . . . . Figure 26. File Send Data Flow Page 86 Appendix B: BFX Internal Summary MAN-REF-H211-05
Receiving Block Module (RBM) This module is called once to open the file and establish communications. Afterwards, it is called each time a block of file data arrives from NETEX. It is the responsibility of the receiving block module to decode all file transfer protocol information contained within the NETEX data block. The block module will then call the receiving record module once for each logical record contained within the file. Overall logic flow for this module is as follows: 1. When entered, it checks the entry the first time. It examines the file MODE specified by the user and subtracts the appropriate header length from the BLOCK = value passed by the control module. It then calls the receiving record module for the first time providing the passed file parameters and the adjusted BLOCK= size. 2. On successful return from the receiving record module, the file will have been opened. Also returned by the record module is the maximum logical record length that will be encountered in the file. The block module will add the record header length to the maximum record length and return the value to the RCV module. At this point, the block module returns to the control module. 3. On the next entry to the block module, the first buffer of information from the sending block module will be provided. Based on the file MODE, the block module will decode the logical record information and call the record module once for each logical record. When the block is exhausted, the block module will return to receive another buffer. 4. If an end of information or terminal error indication is encountered in the incoming data stream, the block module will call the record module for the last time with an error or EOI indication. On return from the block module, the file should be closed and a termination message will normally be produced by the record module. 5. If the record module returns a message or abnormal end error, the block module will forward the message to the control module. If abnormal end was indicated it will free any allocated data areas since the module was called for the last time. Sending Block Module (SBM) The sending block module is responsible for providing blocks of file information to be sent to a receiving remote BFX application. When called the first time, it will call the sending record module to open the file and determine record and record size requirements. Its logic proceeds as follows: 1. When entered, it checks the entry the first time. It examines the file MODE specified by the user and subtracts the appropriate header length from the BLOCK = value passed by the control module. It then calls the sending record module for the first time providing the passed file parameters and the adjusted BLOCK= size. 2. On successful return from the sending record module, the file will have been opened. Also returned by the record module is the maximum logical record length that will be encountered in the file. The block module will add the record header length to the maximum and return the value to the SND module. At this point, the block module returns to the control module. 3. On the next entry to the block module, a buffer will be passed that is to be filled by the block module. The block module will insert block protocol information based on the file MODE and repeatedly call the record module until the remaining space in the block is too small to accommodate the maximum record size first declared by the record module. Record protocol information is added based on the negotiated LCM and the file MODE. MAN-REF-H211-05 Appendix B: BFX Internal Summary Page 87
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H211 Bulk File Transfer (BFX) Utili
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Preface This manual describes the u
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Reference Material The following ma
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Notice to the Reader The material c
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Glossary asynchronous: A class of d
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Contents Revision Record ..........
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Appendix E. BFX Condition Codes....
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Tables Table 1. Block module exit p
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Introduction The Bulk File Transfer
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Using BFX To use BFX, the programme
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Notice that a SEND in one job must
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The BFXTR and BFXTI programs contin
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BFXRVM opens the VSAM file and dete
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JCL and Control Parameters for BFX
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EXEC PGM=BFXTR This statement invok
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RECEIVE SUBMIT For any given file t
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HOSTCHK INDD This optional paramete
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formation that is binary in nature,
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connect to the BFXJSTAT function on
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Job Status Function Request Compone
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Applications The following examples
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IBM z/OS to Linux The example in Fi
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Installing BFX This section describ
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Installation Process This section d
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Tailor the installation job in BFXI
Page 51 and 52: HLQ Default value: BFX.DIST Allowed
Page 53 and 54: LOADLIB Default value: hlq.BFXLOAD
Page 55 and 56: BFXDEF#CLOSE Example: Default value
Page 57 and 58: This parameter (abbreviated JBP) sp
Page 59 and 60: This is a list of up to eight alter
Page 61 and 62: Example: BFXDEF#BUFFERS(‘’)
Page 63 and 64: BFXJSD#JRPARM Default value: Allowe
Page 65 and 66: BFXJSD#UPPER Default value: Allowed
Page 67 and 68: SAMPACCT Default value: ‘’(none
Page 69 and 70: The following statements appear in
Page 71 and 72: BFXJSTAT PROC SYSCL=A //* //* NOTE:
Page 73 and 74: ASM,FORT initep These parameters ar
Page 75 and 76: Appendix A: User Modules BFX provid
Page 77 and 78: MSG MSGLEN MSGLEV call to the recor
Page 79 and 80: -----------------------------------
Page 81 and 82: BUFLEN BUFLEV MSGLEN MSGLEV Signifi
Page 83 and 84: C BUMP RECORD COUNTER C 300 NREC =
Page 85 and 86: MVC RMSGLEN,=F’22’ Message is 2
Page 87 and 88: RDDNAME DS CL8 DDNAME of file RRPAR
Page 89 and 90: LCM MODE DDNAME BBPARM RMOD BRPARM
Page 91 and 92: ===================================
Page 93 and 94: Appendix B. BFX Internal Summary Th
Page 95 and 96: Block Diagram Many modules are used
Page 97 and 98: BFXJSC BFXJS Control BFXPRM Analyze
Page 99 and 100: CONTROL BLOCK RECORD MODULE MODULE
Page 101: CONTROL BLOCK RECORD MODULE MODULE
Page 105 and 106: BFX Standard Job Transmission Modul
Page 107 and 108: Appendix C. BFX Error Messages BFX
Page 109 and 110: BFX010I TO = or FROM = host name om
Page 111 and 112: BFX026F Remote host NETEX not prese
Page 113 and 114: BFX051F BFX Abend Unnn in Module $$
Page 115 and 116: BFX105S Cannot find block module mm
Page 117 and 118: BFX118S Sending block module abort
Page 119 and 120: User Response: If the truncation wa
Page 121 and 122: BFX300I Offering ssssssss; Block ou
Page 123 and 124: gotiated, which contains a value ot
Page 125 and 126: Appendix D. H211 User Abend Codes T
Page 127 and 128: Appendix E. BFX Condition Codes Aft
Page 129 and 130: Index A ASCII......................
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Software Reference Manual - NetEx

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