maxwell v1.0.1 Maxwell.Middleware.Headers
Add fixed headers to request's headers
# Client.ex
use Maxwell.Builder ~(get)a
@middleware Maxwell.Middleware.Headers %{'User-Agent' => "zhongwencool"}
def request do
# headers is merge to %{'User-Agent' => "zhongwencool", 'username' => "zhongwencool"}
[header: %{'username' => "zhongwencool"}] |> get!
end