Ceph » rgw » cleanup

rgw frontends have always converted incoming request headers from their native format like "x-amz-date" into the form "HTTP_X_AMZ_DATE". i believe this "HTTP_" form was for interop with fcgi when we still had a frontend for it

this header transformation causes issues with s3/swift object and bucket metadata, which are key/value pairs represented in headers like "x-amz-meta-key_1: value_1"

the beast frontend performs this transformation in https://github.com/ceph/ceph/blob/fe9d6e9/src/rgw/rgw_asio_client.cc#L50-L62