Connectionless-Mode Service

Connectionless-mode service is message-oriented and supports data transfer in self-contained units with no logical relationship required among multiple units. All information required to deliver a unit of data, including the destination address, is passed by the sender to the transport provider, together with the data, in a single service request. Connectionless-mode service is attractive for applications that involve short-term request/response interactions and do not require guaranteed, in-sequence delivery of data. It is generally assumed that connectionless transports are unreliable.