A host computer is remotely controlled by a remote client device over a network that carries transmissions in a connection-oriented protocol and a connectionless protocol. The host computer establishes a connection to the remote client device using a connection-oriented protocol, and receives commands from the remote client device over the connection-oriented protocol and implements the commands so as to affect a display of the host computer. The host computer transmits content of the display to the remote client device using the connection-oriented protocol. In addition, the host computer identifies one or more rapid-change areas in the display of the host computer in which the display is changing more quickly than a predetermined threshold rate of change, and transmits content of each rapid-change area to the remote client device using a connectionless protocol at a rate higher than the connection-oriented protocol.