How to make client stub connection timeout c++?

[kang joni]

I have this code.

grpc::CreateChannel(host + ":" +port,
                                        grpc::InsecureChannelCredentials());
grpc::ClientContext client;
  client.set_fail_fast(true);

  grpc::Status stat = stub_->AskService(&client, req, &res);

when user input invalid host, ex: some nonexistent hostname this would hang and not to make timeout.
Any body have pointers ?
thanks

[kang joni]

solved

context.set_deadline is what I looking for, thanks.