Networking

GitHub - Hawzen/hdp: What would happen if we didn't use TCP or UDP?

An experiment explores the feasibility of creating and transmitting custom network protocols across different operating systems and the internet, revealing significant challenges with OS compatibility and network infrastructure limitations. Results demonstrate that while custom protocols can work locally, they face major obstacles when traversing NAT gateways, firewalls, and cloud providers, ultimately suggesting TCP/UDP remain the most practical choices.

GitHub - deepseek-ai/DeepEP: DeepEP: an efficient expert-parallel communication library

DeepEP is a communication library optimized for Mixture-of-Experts (MoE) and expert parallelism, providing high-throughput GPU kernels and low-latency operations. The library supports both intranode and internode communication, offering specialized kernels for asymmetric-domain bandwidth forwarding and low-latency inference decoding, with comprehensive support for FP8 and RDMA networks.

IPv6 is hard

IPv6 implementation challenges often stem from incomplete network configurations and lack of proper monitoring rather than inherent complexity. Happy Eyeballs protocol allows browsers to automatically choose between IPv4 and IPv6, masking potential connectivity issues. Network administrators should either fully commit to proper IPv6 implementation or avoid partial deployments that can lead to connectivity problems.

Q2DOS

A modified version of Quake II optimized for MS-DOS systems features extensive compatibility updates, including WATT32 for online play and 3DFX Voodoo rendering support. The port includes numerous enhancements such as modern audio capabilities, bot support, and various stability improvements.

QUIC action: patching a broadcast address amplification vulnerability

A group of researchers discovered a broadcast amplification vulnerability in Cloudflare's QUIC implementation, where a single packet to a broadcast IP address could trigger multiple responses from server workers. The vulnerability, which has been fully patched, highlighted how broadcast functionality combined with SO_REUSEPORT socket options can create significant amplification risks in UDP-based services.

GitHub - mierau/hotline: A modern Hotline client for Mac, iOS, and iPadOS

A modern revival of Hotline, a 1997 Mac OS community platform, is being rebuilt in Swift and SwiftUI for contemporary Apple systems. The project aims to recreate the client-side functionality of the original software, which enabled chat, file sharing, and community features without central servers. Currently supporting macOS and iOS, the implementation maintains the core features while modernizing the experience.