Affects: \
When i try to add extra metadata by RSocketRequester.MetadataSpec#metadata method and don't know i should add a EntryExtractor. I have no way to get the metadata on server side. And then I found out DefaultMetadataExtractor#extractEntry only can handle WellKnownMimeType.MESSAGE_RSOCKET_ROUTING if we don't register a EntryExtractor for other type mime metadata. A warn or debug level log should be print if you ignore some of metadata, which can benefit for debugging.
Comment From: rstoyanchev
We can print a debug message about the metadata mime types in the message and the registered ones.
Comment From: rudy2steiner
@rstoyanchev thanks