Move Flush back to ResponseWriter

response.go

@@ -187,15 +187,7 @@ type ResponseWriter interface {
 	// The provided meta must not be longer than 1024 bytes.
 	// Only one header may be written.
 	WriteHeader(status Status, meta string)
-}
 
-// The Flusher interface is implemented by ResponseWriters that allow a
-// Gemini handler to flush buffered data to the client.
-//
-// The default Gemini ResponseWriter implementation supports Flusher,
-// but ResponseWriter wrappers may not. Handlers should always test
-// for this ability at runtime.
-type Flusher interface {
 	// Flush sends any buffered data to the client.
 	Flush() error
 }

timeout.go

@@ -13,8 +13,6 @@ import (
 // if a call runs for longer than its time limit, the handler responds with a
 // 40 Temporary Failure error. After such a timeout, writes by h to its
 // ResponseWriter will return ErrHandlerTimeout.
-//
-// TimeoutHandler does not support the Hijacker or Flusher interfaces.
 func TimeoutHandler(h Handler, dt time.Duration) Handler {
 	return &timeoutHandler{
 		h:  h,
@@ -108,3 +106,7 @@ func (w *timeoutWriter) writeHeaderLocked(status Status, meta string) {
 	w.meta = meta
 	w.wroteHeader = true
 }
+
+func (w *timeoutWriter) Flush() error {
+	return nil
+}