add error handling for InvalidArgument error from sendResponse()

server.go

@@ -777,6 +777,19 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
 		if err := s.sendResponse(t, stream, reply, s.opts.cp, opts); err != nil {
 			// TODO: Translate error into a status.Status error if necessary?
 			// TODO: Write status when appropriate.
+			s, ok := status.FromError(err)
+			if !ok {
+				// TODO: Parse possible non-status error
+			} else {
+				switch s.Code() {
+				case codes.InvalidArgument:
+					if e := t.WriteStatus(stream, s); e != nil {
+						grpclog.Printf("grpc: Server.processUnaryRPC failed to write status: %v", e)
+					}
+					// TODO: Add cases if needed
+				default:
+				}
+			}
 			return err
 		}
 		if trInfo != nil {