The invention relates to a method for transporting data over a data connection between a sending network component and a receiving network component via a network. The method solves a problem with the reliable data transport protocol according to which a number of data transport packets will be acknowledged in regular time intervals. When such an acknowledge message is lost, the sending network component will have to keep the data for the purpose of retransmission and cannot free its sending buffer. The invention proposes to repeat such an acknowledge message as a precaution for the case that it gets lost after a short time. The time for repeating is set to be less than an RTT (round trip time for the connection). The solution disregards the fact that no statement about the reception of the acknowledge message can get back to the receiver before the RTT has elapsed. For wide area connections in high bandwidth networks, where high RTT values exist, this has the advantage that significant delays in carrying on sending data or unnecessary retransmissions of significant amount of data can be avoided.