What are the valid characters for a Mime Multipart message ContentId "CID:" ?

Posted by mP on Stack Overflow See other posts from Stack Overflow or by mP
Published on 2010-04-09T03:55:04Z Indexed on 2010/04/09 4:03 UTC
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From reading the RFC it appears that CID can/must only contain characters from the same set as those permissable by a regular URI. Is this correct. Im asking because I wish to writeup a simple helper that takes a CIDs prefix and adds a counter when generating CID for mime multitypes attachments.

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