All news with #quic tag

AWS Network Load Balancer Adds QUIC Passthrough Mode

🚀 AWS announced that the Network Load Balancer (NLB) now supports QUIC in passthrough mode, enabling low-latency forwarding of QUIC traffic while preserving session stickiness via the QUIC Connection ID. This helps mobile applications maintain consistent connections when client IPs change during roaming between cellular towers or when switching between Wi‑Fi and cellular. You can enable QUIC on existing or new NLBs through the AWS Management Console, CLI, or APIs. QUIC support is available at no additional charge in all AWS commercial and AWS GovCloud (US) regions and is metered under existing UDP Load Balancer Capacity Unit entitlements.

Cloudflare Open-Sources tokio-quiche: Async QUIC for Tokio

🚀 Cloudflare has open-sourced tokio-quiche, an async QUIC library that combines its quiche transport implementation with the Tokio async runtime. The project provides a battle-tested integration for async UDP I/O and HTTP/3, delivering low-latency, high-throughput handling of millions of requests per second without requiring developers to wire a sans-io stack. tokio-quiche includes an HTTP/3-focused driver, examples, and abstractions such as ApplicationOverQuic so teams can build clients and servers more quickly. It already powers Cloudflare Proxy B in Apple iCloud Private Relay, Oxy-based proxies, and Warp’s MASQUE client, and aims to accelerate broader adoption of HTTP/3 and QUIC.

Defending QUIC Against Acknowledgement-Based DDoS Attacks

🔒 Cloudflare patched two QUIC ACK-handling vulnerabilities (CVE-2025-4820, CVE-2025-4821) affecting its open-source quiche library and services using it. The flaws—missing ACK range validation and an Optimistic ACK attack—could let a malicious peer inflate server send rates, driving CPU and network amplification. Cloudflare implemented ACK range enforcement and a dynamic, CWND-aware skip frequency; quiche versions prior to 0.24.4 were affected.

Cloudflare Uses Massive Data to Boost Global Network

⚡ Cloudflare is leveraging telemetry from its vast Free Plan and global edge to refine congestion control and improve routing across its network. By combining passive connection logs, Real User Measurement (RUM) and cross-network models, the team evaluates multiple algorithms beyond classic loss-based and BBR approaches. A migration to a Rust-based stack enables faster experimentation and parameter tuning; early QUIC tests show up to 10% performance gains. Cloudflare plans staged rollouts through 2026 and offers enterprise early access.

MoQ: A unified, low-latency media relay on QUIC at scale

🔁 Cloudflare announces the first Media over QUIC (MoQ) relay network, built on a modern transport to unify ingest and delivery for real-time media. MoQ — an open IETF protocol developed alongside vendors like Meta, Google, and Cisco — treats media as named, subscribable tracks and forwards immutable wire Objects via relays without transcoding. The design leverages QUIC features such as no head-of-line blocking, connection migration, and 0-RTT resumption to deliver sub-second latency at broadcast scale, while simplifying architectures that previously required many disparate protocols.