Context Link Header on PUT/POST?

Dear all,

The specification is clear about the use of a link header to provide a
context for JSON to upgrade to JSON-LD when a document is being retrieved
via HTTP GET:
    http://www.w3.org/TR/json-ld/#interpreting-json-as-json-ld

Can, and if so should, this pattern also be available when accepting
*requests* via PUT, POST or PATCH where the entity body's content-type is
specified to be application/json?  In other words, should a well-behaved
application also look for a link header on requests giving a context,
rather than assuming it will be in the JSON itself?

My assumption is Yes, but it would be nice to hear if that is the group
consensus :)

Many thanks,

Rob


-- 
Rob Sanderson
Information Standards Advocate
Digital Library Systems and Services
Stanford, CA 94305