RFC 2801 (rfc2801) - Page 2 of 290

Internet Open Trading Protocol - IOTP Version 1

RFC 2801                       IOTP/1.0                       April 2000


   3.  Protocol Structure ............................................31
     3.1  Overview ...................................................32
         3.1.1  IOTP Message Structure ...............................32
         3.1.2  IOTP Transactions ....................................34
     3.2  IOTP Message ...............................................35
         3.2.1  XML Document Prolog ..................................37
     3.3  Transaction Reference Block ................................37
         3.3.1  Transaction Id Component .............................38
         3.3.2  Message Id Component .................................39
         3.3.3  Related To Component .................................41
     3.4  ID Attributes ..............................................42
         3.4.1  IOTP Message ID Attribute Definition .................43
         3.4.2  Block and Component ID Attribute Definitions .........44
         3.4.3  Example of use of ID Attributes ......................46
     3.5  Element References .........................................46
     3.6  Extending IOTP .............................................48
         3.6.1  Extra XML Elements ...................................49
         3.6.2  Opaque Embedded Data .................................50
     3.7  Packaged Content Element ...................................50
         3.7.1  Packaging HTML .......................................52
         3.7.2  Packaging XML ........................................53
     3.8  Identifying Languages ......................................54
     3.9  Secure and Insecure Net Locations ..........................54
     3.10 Cancelled Transactions .....................................55
         3.10.1 Cancelling Transactions ..............................55
         3.10.2 Handling Cancelled Transactions ......................56
   4.  IOTP Error Handling ...........................................56
     4.1  Technical Errors ...........................................57
     4.2  Business Errors ............................................57
     4.3  Error Depth ................................................58
         4.3.1  Transport Level ......................................58
         4.3.2  Message Level ........................................58
         4.3.3  Block Level ..........................................59
     4.4  Idempotency, Processing Sequence, and Message Flow .........61
     4.5  Server Role Processing Sequence ............................62
         4.5.1  Initiating Transactions ..............................62
         4.5.2  Processing Input Messages ............................63
         4.5.3  Cancelling a Transaction .............................70
         4.5.4  Retransmitting Messages ..............................70
     4.6  Client Role Processing Sequence ............................71
         4.6.1  Initiating Transactions ..............................71
         4.6.2  Processing Input Messages ............................72
         4.6.3  Cancelling a Transaction .............................74
         4.6.4  Retransmitting Messages ..............................74
   5.  Security Considerations .......................................74
     5.1  Determining whether to use digital signatures ..............74
     5.2  Symmetric and Asymmetric Cryptography ......................76
     5.3  Data Privacy ...............................................77



Burdett                      Informational