Transport and Message Reliability

Question

What do you mean by the term Transport and Message Reliability?

Answer 1

Transport reliability (like one offered by TCP) provides point-to-point guaranteed delivery at the network packet level and also guarantees the order of packets. Transport reliability is not flexible to dropping network connections and a diversity of other communication troubles.

Message reliability mainly deals with the reliability at message level independent of how many packets are needed to deliver the message. Message reliability gives for end-to-end guaranteed delivery and order of messages; despite of how many intermediaries are included and how many network hops are needed to deliver the message from the client to service.