A 1995 SIGCOMM paper, "A Reliable Multicast Framework for Light-weight Sessions and Application-Level Framing", commonly known as SRM, explored a fundamentally new approach to reliable multiparty data delivery. Rather than adapting established sender-driven reliable unicast mechanisms to multicast, as most contemporaneous proposals did, SRM introduced a data-centric model in which data receivers recover losses by explicitly requesting missing data. Thirty years later, we revisit the SRM framework, examining the challenges it faced, the lessons learned, and its influence on the later development of Named Data Networking (NDN). Experimentations with SRM revealed a fundamental semantic mismatch between its data-centric framework and IP's address-based delivery; while the application layer named data, the network layer remained 'blind' to those names, resulting in inefficient loss recovery. NDN resolves this architectural friction by aligning network delivery with the data-retrieval model and by securing data directly rather than securing communication channels. This retrospective highlights how early insights from SRM informed key design decisions in NDN and illustrates how NDN's design emerged from the cumulative insights gained over decades of networking research and development.

翻译：1995年发表于SIGCOMM的论文《轻量级会话与应用层框架的可靠组播架构》（通常称为SRM）探索了一种全新的可靠多方数据传输方法。与当时大多数提案将成熟的发送方驱动可靠单播机制适配至组播不同，SRM引入了以数据为中心的模型，其中数据接收方通过显式请求缺失数据来实现丢失恢复。三十年后，我们重新审视SRM框架，探讨其面临的挑战、获得的经验教训及其对后续命名数据网络（NDN）发展的影响。SRM的实验揭示了其数据为中心框架与IP基于地址的传输之间存在根本性的语义失配：虽然应用层对数据进行了命名，但网络层对这些名称却处于“盲视”状态，导致低效的丢失恢复机制。NDN通过将网络传输与数据检索模型对齐，并通过直接保护数据而非通信信道来解决这一架构矛盾。本文回顾了SRM的早期见解如何影响NDN的关键设计决策，并阐释了NDN的设计如何从数十年网络研究与发展的累积认知中孕育而生。