Get to 100% coverage for validating/normalizing sent headers
Get to 100% coverage for validating/normalizing sent headers

bhavishyagopesh/hyper-h2,vladmunteanu/hyper-h2,Kriechi/hyper-h2,Kriechi/hyper-h2,python-hyper/hyper-h2,vladmunteanu/hyper-h2,python-hyper/hyper-h2