NEW 160286
It should be easy for developers to know which response headers are filtered out by fetch algorithm 
https://bugs.webkit.org/show_bug.cgi?id=160286
Summary It should be easy for developers to know which response headers are filtered ...
youenn fablet
Reported 2016-07-28 00:52:12 PDT
This applies to fetch API at least. Based on bug 158565, this may be applicable to XHR as well.
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youenn fablet
Comment 1 2016-07-28 00:54:57 PDT
XHR somehow gives this information by adding a debug message on the console log. This is removed in bug 158565 as filtering is done at DocumentThreadableLoader level. We could add a message on the console log detailing which headers are filtered out. The inspector could also be enhanced to display all response headers and which are visible/not visible.
Radar WebKit Bug Importer
Comment 2 2016-11-01 17:05:01 PDT
<rdar://problem/29055617>
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