Function validWireHeaderFieldName

internal/http2/http2.go:65–78

validWireHeaderFieldName reports whether v is a valid header field name (key). See httpguts.ValidHeaderName for the base rules. Further, http2 says: "Just as in HTTP/1.x, header field names are strings of ASCII characters that are compared in a case-insensitive fashion. However, header field na

(v string)

//	fashion. However, header field names MUST be converted to
//	lowercase prior to their encoding in HTTP/2. "
func validWireHeaderFieldName(v string) bool {
	if len(v) == 0 {
		return false
	}
	for _, r := range v {
		if !httpguts.IsTokenRune(r) {
			return false
		}
		if 'A' <= r && r <= 'Z' {
			return false
		}
	}
	return true
}

func httpCodeString(code int) string {
	switch code {