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As Delay-Tolerant Networks (DTNs), dynamic networks in which nodes are not always connected to one another, gain traction in both the research community and in real-world deployments, research must explore how DTN protocols can coexist with traditional mobile ad-hoc networking protocols. This is a requirement for future deployments in which changing networking conditions dictate that delay-tolerant networking protocols be available, but may not always be the best choice given dynamic environmental conditions. In this paper the authors present an adaptive middleware (MaDMAN) for delay tolerant networks that seamlessly and dynamically migrates applications' communications sessions between different network and routing protocols in response to changing networking conditions without dropping the connection or breaking application-layer connectivity.
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