src,http2: DRY header/trailer handling code up
Remove duplicate code through minor refactoring.
Checklist
-
make -j4 test(UNIX), orvcbuild test(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
src/http2
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Remove duplicate code through minor refactoring.
make -j4 test (UNIX), or vcbuild test (Windows) passessrc/http2