Revert "Revert "リダイレクトする場合はContent-Typeヘッダを消す""
Revert "Revert "リダイレクトする場合はContent-Typeヘッダを消す""

This reverts commit 7f2a14849e1252547f4c7e6cbfc936e54ff30354.

catatsuy/private-isu,catatsuy/private-isu,catatsuy/private-isu,catatsuy/private-isu,catatsuy/private-isu,catatsuy/private-isu