Learn about efficient data transfer between network sockets in Linux through a conference talk from NDC TechTown 2024. Dive into advanced techniques for optimizing network proxy performance by exploring two key methods: the splice() syscall and sockmap. Discover how to leverage BPF-based components and the core network stack to achieve zero-copy data transfer between TCP sockets without user-space intervention. Master the implementation, features, and internal architecture of sockmap while understanding its practical limitations and potential pitfalls. Gain hands-on knowledge about setting up and utilizing BPF sockmap for improved network performance in proxy applications.