A method of exchanging messages for switching of a sink device of a wireless network to a source device comprises receiving audio/video (A/V) data from a first source device; transmitting a first command to a second source device within the wireless network to identify whether the second source device can transmit A/V data; receiving a second command from the first source device, the second command being transmitted from the second source device in response to the first command and including indication information indicating whether the second source device can transmit A/V data; and determining whether to switch to the second source device depending on the indication information included in the second command.