1. A method comprising: establishing a transport protocol tunnel connection from a first node in a messaging system to a second node in the messaging system; generating a messaging system message on the first node; generating one or more transport protocol packets, wherein the one or more transport protocol packets each includes at least a part of the messaging system message; and transmitting the one or more transport protocol packets to the second node via the transport protocol tunnel connection; wherein the transport protocol tunnel connection provides full-duplex transmission of messaging system messages between the first node and the second node, and wherein the transport protocol tunnel connection further provides delivery of the messaging system messages in the sequence in which the messaging system messages are generated.