JR42734: AS2 CANONICALIZATION MIS-CALCULATE MESSAGE LENGTH.

IBM WebSphere Partner Gateway, Advanced Edition, v6.2.1 Fixpack 2
IBM WebSphere Partner Gateway, Enterprise Edition, v6.2.1 Fixpack 2

APAR status

• Closed as program error.

Error description

• Environment: WPG 6.2.0.2 on AIX
  
  Problem description:
  
  When messages contained <CRLF>, WPG got wrong message length
  after AS2 canoncialization.
  
  During canonicalizing we simply read the contents and check for
  CRLF. If there is only LF and no CR then we add a CR to it so
  that finally it gets interpreted as CRLF. This is as per AS2
  standards. So when canonicalizing the document we read and
  write it again based on the initially obtained content length.
  Since in this particlar case the content-length is calculated
  incorrectly for soem reason, when writing the data back some of
  it gets missed out and hence the corrupted data is sent out.
  
  Please refer to PMR 10227,211,788.
  

Local fix

• Workaround: Configure excludedContentTypesForCanonicalization
  property to include the target message type.
  

Problem summary

• AS2 canonicalization was miscalculating message length thus
  message was getting corrupted.
  

Problem conclusion

• APAR fix JR42734 was provided to correct the way message length
  was calculated. During canonicalizing we read the contents and
  check for CRLF. If there is only LF and no CR then we add a CR
  to it so that finally it gets interpreted as CRLF. This is as
  per AS2 standards. So when canonicalizing the document we read
  and write it again based on the initially obtained content
  length. Since in this particlar case the content-length is
  calculated incorrectly, when writing the data back some of it
  gets missed out and hence the corrupted data is sent out.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEB PART GTWAY

• Fixed component ID

  5724L6900

Applicable component levels

• R621 PSY

     UP