func golang.org/x/net/http/httpguts.ValidHeaderFieldName

2 uses

	golang.org/x/net/http/httpguts (current package)
		httplex.go#L201: func ValidHeaderFieldName(v string) bool {

	golang.org/x/net/http2
		transport.go#L1868: 		if !httpguts.ValidHeaderFieldName(k) {