Function logf

cmd/cbft/timeout_handler.go:199–206

logf prints to the ErrorLog of the *Server associated with request r via ServerContextKey. If there's no associated server, or if ErrorLog is nil, logging is done via the log package's standard logger.

(r *http.Request, format string, args ...interface{})

// via ServerContextKey. If there's no associated server, or if ErrorLog
// is nil, logging is done via the log package's standard logger.
func logf(r *http.Request, format string, args ...interface{}) {
	s, _ := r.Context().Value(http.ServerContextKey).(*http.Server)
	if s != nil && s.ErrorLog != nil {
		s.ErrorLog.Printf(format, args...)
	} else {
		log.Printf(format, args...)
	}
}

func checkWriteHeaderCode(code int) {
	// Issue 22880: require valid WriteHeader status codes.