[OASIS Issue Tracker] (ODATA-757) Add an OData specific header If-Metadata-Match

Matthew Borges created ODATA-757:
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             Summary: Add an OData specific header If-Metadata-Match
                 Key: ODATA-757
                 URL: https://issues.oasis-open.org/browse/ODATA-757
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: OData Protocol 
    Affects Versions: V4.0_CS01
            Reporter: Matthew Borges
            Priority: Minor
             Fix For: V4.1_WD01


We should discuss adding an OData specific header (such as If-Metadata-Match) that can be used to conditionally control response/requests based on the Metadata ETag.  Two examples:

1) Only perform a POST if the metadata for the inserted entity type has not changed.

2) Only return a delta response if the metadata has not changed.



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