gistfile1.txt

// ForwardResponseStream forwards the stream from gRPC server to REST client.
func ForwardResponseStream(ctx context.Context, marshaler Marshaler, w http.ResponseWriter, req *http.Request, recv func() (proto.Message, error), opts ...func(context.Context, http.ResponseWriter, proto.Message) error) {
  //  f, ok := w.(http.Flusher)
  //  if !ok {
  //    grpclog.Printf("Flush not supported in %T", w)
  //    http.Error(w, "unexpected type of web server", http.StatusInternalServerError)
  //    return
  //  }

  md, ok := ServerMetadataFromContext(ctx)
  if !ok {
    grpclog.Printf("Failed to extract ServerMetadata from context")
    http.Error(w, "unexpected error", http.StatusInternalServerError)
    return
  }
  handleForwardResponseServerMetadata(w, md)

  w.Header().Set("Transfer-Encoding", "chunked")
  w.Header().Set("Content-Type", marshaler.ContentType())
  if err := handleForwardResponseOptions(ctx, w, nil, opts); err != nil {
    http.Error(w, err.Error(), http.StatusInternalServerError)
    return
  }
  //  w.WriteHeader(http.StatusOK)
  //  f.Flush()
  for {
    resp, err := recv()
    if err == io.EOF {
      return
    }
    if err != nil {
      handleForwardResponseStreamError(marshaler, w, err)
      return
    }
    if err := handleForwardResponseOptions(ctx, w, resp, opts); err != nil {
      handleForwardResponseStreamError(marshaler, w, err)
      return
    }

    fmt.Println(resp)

    //    buf, err := marshaler.Marshal(streamChunk(resp, nil))
    //    if err != nil {
    //      grpclog.Printf("Failed to marshal response chunk: %v", err)
    //      return
    //    }
    //    if _, err = fmt.Fprintf(w, "%s\n", buf); err != nil {
    //      grpclog.Printf("Failed to send response chunk: %v", err)
    //      return
    //    }
    //    f.Flush()
  }
}