Lost in transit: debugging dropped packets from negative header lengths
June 26, 2023 2:00PM
In this post, we'll provide some insight into the process of investigating networking issues and how to begin debugging issues in the kernel using pwru and kprobe tracepoints...
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Argo Smart Routing for UDP: speeding up gaming, real-time communications and more
June 20, 2023 2:00PM
Argo Smart Routing
Today, Cloudflare is super excited to announce that we’re bringing traffic acceleration to customer’s UDP traffic. Now, you can improve the latency of UDP-based applications like video games, voice calls, and video meetings by up to 17%...
How to stop running out of ephemeral ports and start to love long-lived connections
February 02, 2022 9:53AM
Often programmers have assumptions that turn out, to their surprise, to be invalid. From my experience this happens a lot. Every API, technology or system can be abused beyond its limits and break in a miserable way...
Extending Cloudflare’s Zero Trust platform to support UDP and Internal DNS
December 08, 2021 1:59PM
Last year, we launched a new feature which empowered users to begin building a private network on Cloudflare. Today, we’re excited to announce even more features which make your Zero Trust migration easier than ever....
Everything you ever wanted to know about UDP sockets but were afraid to ask, part 1
November 25, 2021 5:27PM
Historically Cloudflare's core competency was operating an HTTP reverse proxy. We've spent significant effort optimizing traditional HTTP/1.1 and HTTP/2 servers running on top of TCP. Recently though, we started operating big scale stateful UDP services....
November 13, 2021 2:33PM
Cloudflare blocks an almost 2 Tbps multi-vector DDoS attack
Earlier this week, Cloudflare automatically detected and mitigated a DDoS attack that peaked just below 2 Tbps — the largest we’ve seen to date....