10. The non-transitory, computer-readable medium of claim 8 , wherein the instructions are configured to cause the processor to send an echo request that requests a response from the responding device to indicate that a connection is current to the responding device, wherein the echo request includes a tag of a first value that indicates that the sent message is a request.
11. The non-transitory, computer-readable medium of claim 10 , wherein the instructions are configured to cause the processor to receive an echo response from the responding device as a response to the echo request, wherein the echo response includes a tag of a second value that indicates that the received data pertains to an echo response.