A transport is a type of endpoint that acts as an event detector. A transport resides at the edge of a resource oriented computing application or system and waits for an event, external to the system to occur. When an external event is detected the transport creates a root request and issues it into the space hosting the transport.
For example, the HTTP protocol transport creates a TCP/IP listening socket and responds to external HTTP based TCP/IP request events.
For more details on the transport endpoint pattern see the Logical Reference book or for details on how to implement a transport see the Physical Reference book. To find a list of transports implemented in installed modules search for transport