Server header constant
Server header constant

Signed-off-by: Vishal Rana <54e88dfdee11a18f791b7188a9ffbcd1fdba30bd@labstack.com>

olliephillips/echo,caiqfrog/echo,coderhaoxin/echo,mtojek/echo,coderhaoxin/echo,labstack/echo,gavv/echo,gavv/echo,coderhaoxin/echo,o1egl/echo,labstack/echo,mtojek/echo,olliephillips/echo,o1egl/echo