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fix: return opaque responses from file and http protocol handlers for cross-origin no-cors requests - #52853
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… cross-origin no-cors requests The opaque tagging added for cross-origin no-cors loads is written to a local response head that only the string/buffer/stream sinks deliver. The file sink (asar/file loader) and the http sink (URLPipeLoader) build or forward their own response head, dropping the tag, so a cross-origin mode=no-cors fetch of a registerFileProtocol or registerHttpProtocol resource was delivered as a basic, script-readable response. Compute the opaque decision once in StartLoading and interpose a URLLoaderClient on the file and http sinks that re-applies the opaque tag to the head those sinks emit, matching the behaviour of the other sinks. Co-authored-by: Sam Attard <[email protected]>
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Backport of #52822
See that PR for details.
Notes: Fixed
registerFileProtocolandregisterHttpProtocolreturning readable responses to cross-originno-corsfetches; they now return opaque responses likeprotocol.handle.