core
toxiproxy
| core | toxiproxy | |
|---|---|---|
| 4 | 25 | |
| 639 | 10,313 | |
| 1.7% | 0.7% | |
| 6.4 | 6.4 | |
| 2 months ago | 3 days ago | |
| Python | Go | |
| BSD 2-clause "Simplified" License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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core
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Twenty-five open-source network emulators and simulators you can use in 2023
CORE has been updated twice since the list was created. It’s actively maintained. CORE emulates mobile, changing networks like IoT devices, phones, or network-connected vehicles.
GitHub - https://github.com/coreemu/core
Community Discord - https://discord.gg/AKd7kmP
- Core: Common Open Research Emulator
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Common Open Research Emulator (CORE) is a tool for emulating networks (added support for LXD/LXC and Docker
CORE: https://github.com/coreemu/core 3 The Common Open Research Emulator (CORE) is a tool for emulating networks on one or more machines. You can connect these emulated networks to live networks. CORE consists of a GUI for drawing topologies of lightweight virtual machines, and Python modules for scripting network emulation.
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Shadow Simlulator – run real applications over a simulated Internet topology
A quick look (by searching for bgp) suggests that this handles the upper layers, but doesn't try to simulate some of the deeper layers of a network such as bgp. Which something that emulators like core can do [0].
0. https://github.com/coreemu/core.
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?
mininet - Emulator for rapid prototyping of Software Defined Networks
rkt
kickthemout - 💤 Kick devices off your network by performing an ARP Spoof attack.
heka - DEPRECATED: Data collection and processing made easy.
shadow - Shadow is a discrete-event network simulator that directly executes real application code, enabling you to simulate distributed systems with thousands of network-connected processes in realistic and scalable private network experiments using your laptop, desktop, or server running Linux.
Hugo - The world’s fastest framework for building websites.
labrea - Scripting other people's programs.
Juju - Orchestration engine that enables the deployment, integration and lifecycle management of applications at any scale, on any infrastructure (Kubernetes or otherwise).
imunes - Integrated Multiprotocol Network Emulator/Simulator
nes - NES emulator written in Go.
mn-wifi-ebook
Docker - Notary is a project that allows anyone to have trust over arbitrary collections of data