To prevent the problem I just mentioned with MsgDeliverEvent() from happening with MsgReply(), MsgRead(), and MsgWrite(), these functions were transformed into blocking calls when used over the network. Locally they'd simply transfer the data and unblock immediately. On the network, we have to (in the case of MsgReply()) ensure that the data has been delivered to the client or (in the case of the other two) to actually transfer the data to or from the client over the network.