Abstract: A device for use in transmitting a message includes a memory device including an application layer that includes a constrained application protocol and a processor coupled to the memory device. The processor is programmed to identify a message to be transmitted through a data link to at least one other device within a network, determine a quality of the data link, and determine a segment size based on the data link quality. The processor is also programmed to execute instructions within the application layer to form at least one message segment from the message such that a size of the at least one message segment is equal to the segment size. The device also includes a communication device configured to transmit the at least one message segment to the at least one other device.