
Server app could return headers in front of body/data buffer. Offers apis for building and serialization of headers section. HTTP layer now only add Date, Server and Content-Lengths headers, rest is up to app. Well known header names are predefined. Type: improvement Change-Id: If778bdfc9acf6b0d11a48f0a745a3a56c96c2436 Signed-off-by: Matus Fabian <matfabia@cisco.com>