Efficient network communications are essential to enable network-centric warfare. However, tactical edge networks present an extremely challenging and heterogeneous networking environment due to heterogeneous architectures, dynamic topologies, unwanted adversarial behavior, interference, and other wireless channel conditions. In order to support end-user applications and guarantee system performance and interoperability in such constrained environments, it is critical to adapt the volume and type of traffic generated by applications to the continuously varying network conditions. To this end, we extended the Agile Computing Middleware (ACM) with capabilities specifically designed to provide network state detection and adaptation in constrained networks. In this paper, we present SENSEI (for Smart Estimation of Network StatE Information), a set of components of the ACM that provides effective strategies for the dissemination of network state information. SENSEI implements a content- and context-aware clustering-based algorithm for the distribution of network state information that can significantly reduce the overhead associated with network state information sharing.