Peer-to-Peer networks have inspired many applications that work in distributed environments. One such application is multimedia streaming which exploits the P2P network. However, Denial of Service (DoS) attacks may deny the services causing deterioration of video streaming quality. Therefore, resilience against DoS attacks is indispensable for multimedia content distribution systems. In this paper, proposed a framework known as DoS Resilient-Optimal P2P Topology Construction (DROPTC) framework. It strives at arriving at optimally stable topologies at runtime dynamically to defeat DoS attack strategies and ensure desired QoS. An algorithm known as DoS Resilient Topology Construction (DRTC) is proposed. The algorithm constructs stable P2P topologies dynamically by performing cost analysis in presence of DoS attacks. The empirical study revealed that the proposed framework ensures QoS in the multimedia streaming of Application Level Multicast applications. Besides, it outperforms previous approaches as it provides optimally stable topologies against worst-case node failures and DoS attacks.