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  • IPv4 packets - See the daffodil-test src/test/resources/org/apache/daffodil/layers/IPv4.tdml test, related IPv4.dfdl.xsd schema. This is fake, but very much like IPv4. 
    • There is also a PR to update the ethernetIP github DFDL schema project to compute checksums.  https://github.com/DFDLSchemas/ethernetIP/pull/1. However, there are checksums in the IPv4Header, UDP, TCP, ICMP, etc. So the work involved here is extensive.
    • This work likely should be done only after
      Jira
      serverASF JIRA
      serverId5aa69414-a9e9-3523-82ec-879b028fb15b
      keyDAFFODIL-1927
      is complete so that the pluggable layers that compute these checksums can be created as a plugin. 
  • GPS data with parity - See the GPS-SPS DFDL schema on the DFDL schemas github site.
    • TBD: currently a pull request: https://github.com/DFDLSchemas/gps-sps/pull/1
    • This work likely should be done only after
      Jira
      serverASF JIRA
      serverId5aa69414-a9e9-3523-82ec-879b028fb15b
      keyDAFFODIL-1927
      is complete so that the pluggable layers for this parity can be done as a plugin. 
  • Check-digit computation - See the daffodil-test src/test/resources/org/apache/daffodil/layers/TestCheckDigit.tdml test file and related checkDigit.dfdl.xsd schema. 

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