Speaking the TCP protocol, we communicate between "ports" in the local and remote ends. Each of these port fields are 16 bits in the protocol header so they can hold values between 0 - 65535. (IPv4 or IPv6 are the same here.) We usually do HTTP on port 80 and we do HTTPS on port … Continue reading Pretending port zero is a normal one →| daniel.haxx.se
Multi-Path TCP (MPTCP) leverages multiple network interfaces, like Wi-Fi and cellular, to provide seamless mobility for more reliable connectivity. While promising, MPTCP is still in its early stages, with limited support and practical use cases. This post explores its potential and current limitations.| The Cloudflare Blog
We significantly sped up our privacy proxy service by fixing a 40ms delay in "double-spend" checks. The issue stemmed from how Nagle's algorithm and delayed ACKs interacted with a third-party dependency.| The Cloudflare Blog
Why bundling can cause more harm than good. When bundling is actually appropriate.| WaspDev
Proper TCP socket splicing reduces the load on userspace processes and enables more efficient data forwarding. We realized that Linux Kernel's SOCKMAP infrastructure can be reused for this purpose.| The Cloudflare Blog
Recently at I gave a short talk titled "Linux at Cloudflare". The talk ended up being mostly about BPF. It seems, no matter the question - BPF is the answer. Here is a transcript of a slightly adjusted version of that talk.| The Cloudflare Blog
在之前的文章中介绍了网络的「分层」概念1，那么这一篇继续科普一下网络的基础，即「转发」这个概念。| www.kawabangga.com
I first heard about MultiPath TCP (MPTCP) in 2007 when I met Olivier Bonaventure in Louvain-la-Neuve, Belgium. In the meantime MPTCP has been gaining a ton of traction...| Diogo Mónica
The Transmission Control Protocol (TCP) is one of the main Internet protocols. Usually spoken on top of the Internet Protocol (legacy version 4 or version 6), it provides a reliable, ordered, and error-checked stream of octets. When an application uses TCP, they get these properties for free (in contrast to UDP).| hannes.robur.coop
In the Consuming External TCP Services blog post, I described how external services can be consumed by in-mesh Istio applications via TCP. In this post, I demonstrate consuming external MongoDB services. You use the Istio Bookinfo sample application, the version in which the book ratings data is persisted in a MongoDB database. You deploy this database outside the cluster and configure the ratings microservice to use it. You will learn multiple options of controlling traffic to external Mongo...| Istio Blog
In my previous blog post, Consuming External Web Services, I described how external services can be consumed by in-mesh Istio applications via HTTPS. In this post, I demonstrate consuming external services over TCP. You will use the Istio Bookinfo sample application, the version in which the book ratings data is persisted in a MySQL database. You deploy this database outside the cluster and configure the ratings microservice to use it. You define a Service Entry to allow the in-mesh applicati...| Istio Blog
Docker is a container platform that streamlines software delivery and provides isolation, scalability, and efficiency with less overhead than OS level virtualization. These instructions are taken from the official Docker for Ubuntu page, but I fine-tuned them per Ubuntu22+ standards. Uninstall older versions for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do sudo apt ... Docker: installing Docker CE on Ubuntu| fabianlee.org
DNS: don't implement EDNS0 to bypass implementing TCP fallback| The Grumpy Troll
You can now expose SSH, HTTPS and Kubernetes through a single tunnel from your homelab. I’ll show you how.| inlets.dev
Access all your remote SSH servers on your network from a single TCP tunnel using the new sshmux feature in inlets-pro 0.9.28.| inlets.dev
今天来讲一讲TCP 的 TIME_WAIT 的问题。这个问题尽人皆知，不过，这次遇到的是不太一样的场景，前两天也解决了，正好写篇文章，顺便把 TIME_WAIT 的那些事都说一说。对了，这个场景，跟我开源的探活小工具 EaseProbe 有关，我先说说这个场景里的问题，然后，顺着这个场景跟大家好好说一下这个事。| 酷 壳 - CoolShell
Section 9.1.1 in RFC7540 explains how HTTP/2 clients can reuse connections. This is my lengthy way of explaining how this works in reality. Many connections in HTTP/1 With HTTP/1.1, browsers are typically using 6 connections per origin (host name + port). They do this to overcome the problems in HTTP/1 and how it uses TCP … Continue reading HTTP/2 connection coalescing →| daniel.haxx.se