labrea
toxiproxy
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labrea
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Twenty-five open-source network emulators and simulators you can use in 2023
there's labrea which is pretty dusty: https://github.com/dustin/labrea
you could probably achieve something similar with bpf today.
toxiproxy
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Speedbump – a TCP proxy to simulate variable network latency
Checkout also shopify's awesome tool called toxiproxy: https://github.com/Shopify/toxiproxy
It turns out to be also a very good way to test a networking library by implementing it. Since your stack needs to be able to basically handle most adverse events properly.
The idea behind 'chaos engineering' is cool.
- Toxiproxy – simulate network and system conditions for chaos testing
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Twenty-five open-source network emulators and simulators you can use in 2023
I use this to simulate delays between various local services:
https://github.com/Shopify/toxiproxy
If you have Docker all you need is a few terminal commands
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Artificially Producing Poor Internet?
Idk about firewall level, but application level I’d recommend https://github.com/Shopify/toxiproxy
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Regarding default TCP setting in Golang and how it effects speed
That's why I usually recommend anybody that develops network critical apps to test their app with something like toxiproxy and purposfully mess with their connections and simulate network issues.
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Performance testing with slow connection and packet loss
We use this thing. https://github.com/Shopify/toxiproxy I am not sure that it supports windows, but you can install it to the Linux machine and route your application under the test to that proxy.
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Speedbump - a TCP proxy for simulating variable network latency
On the same vibes as https://github.com/Shopify/toxiproxy
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Ask HN: How do I force network failures during development against remote APIs?
https://github.com/Shopify/toxiproxy is a perfect solution for that. I used it quite successfully years ago and it looks like it's still pretty active.
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Is there a tool to control bandwidth for debugging purposes?
Looking at the toxiproxy you mentioned, it seems like it should do what you want though? TLS is generally over TCP anyway, so it should still be able to throttle those connections - it just wont understand the encryption. I also saw a pull request for having it act as a TLS man-in-the-middle proxy: https://github.com/Shopify/toxiproxy/pull/270
What are some alternatives?
core - Common Open Research Emulator
rkt
systemd - The systemd System and Service Manager
heka - DEPRECATED: Data collection and processing made easy.
dummynet - Automatically exported from code.google.com/p/dummynet
Hugo - The world’s fastest framework for building websites.
Comcast - Simulating shitty network connections so you can build better systems.
Juju - Orchestration engine that enables the deployment, integration and lifecycle management of applications at any scale, on any infrastructure (Kubernetes or otherwise).
mn-wifi-ebook
nes - NES emulator written in Go.
pwc - Password card generator
Docker - Notary is a project that allows anyone to have trust over arbitrary collections of data