Description
Practically, we can't use HTTPHdr and MIMEHdr with const, because some member function doesn't have const unreasonably. It leads misunderstanding of API and inappropriate modification.
We should add const to the functions.
Practically, we can't use HTTPHdr and MIMEHdr with const, because some member function doesn't have const unreasonably. It leads misunderstanding of API and inappropriate modification.
We should add const to the functions.