Imports golang.org/x/net/context golang.org/x/net/http2 golang.org/x/net/http2/hpack golang.org/x/net/trace google.golang.org/grpc/codes google.golang.org/grpc/credentials google.golang.org/grpc/grpclog google.golang.org/grpc/metadata google.golang.org/grpc/peer Standard library imports bufio bytes errors fmt io math net net/http strconv strings sync sync/atomic time