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Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

slowyapp.com

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Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#11

Post by exDM69 »

I'd like to have something like this for Linux. Anyone got any tips how to set something like this up? Command line and kernel option hacking preferred to GUI gadgets.

I would need to test my virtual-connection-over-UDP code with packet loss, latency and incorrect packet order delivery and I really wouldn't want to write code inside my app to test.

Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#12

Post by nodata »

exDM69 wrote: post #11

I'd like to have something like this for Linux. Anyone got any tips how to set something like this up? Command line and kernel option hacking preferred to GUI gadgets. I would need to test my virtual-connection-over-UDP code with packet loss, latency and incorrect packet order delivery and I really wouldn't want to write code inside my app to test.

tc

Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#15

Post by llz »

eps wrote: post #7

The website has some layout problems when viewed from the iPhone, and, more importantly, it appears to only have a description, but no Download button or a pricing information.

It's a mac app, you wouldn't want to download it on your iPhone anyways :)

Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#17

Post by qqqqqq »

nodata wrote: post #12
exDM69 wrote: post #11

I'd like to have something like this for Linux. Anyone got any tips how to set something like this up? Command line and kernel option hacking preferred to GUI gadgets. I would need to test my virtual-connection-over-UDP code with packet loss, latency and incorrect packet order delivery and I really wouldn't want to write code inside my app to test.

tc

Good lord, you really do learn something new every day with linux. Thanks!

Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#18

Post by laverick »

exDM69 wrote: post #11

I'd like to have something like this for Linux. Anyone got any tips how to set something like this up? Command line and kernel option hacking preferred to GUI gadgets. I would need to test my virtual-connection-over-UDP code with packet loss, latency and incorrect packet order delivery and I really wouldn't want to write code inside my app to test.

Also worth being aware of - NIST Net: http://snad.ncsl.nist.gov/nistnet/

Lets you set up a linux box to act as a configurable router that does network emulation. Useful if you want to test devices that don't have their own emulation options.

Re: Show HN: Slowy app, Real-world connection simulator and bandwidth limiter

#20

Post by exDM69 »

nodata wrote: post #12
exDM69 wrote: post #11

I'd like to have something like this for Linux. Anyone got any tips how to set something like this up? Command line and kernel option hacking preferred to GUI gadgets. I would need to test my virtual-connection-over-UDP code with packet loss, latency and incorrect packet order delivery and I really wouldn't want to write code inside my app to test.

tc

Excellent. I sort of expected an utility like this to be part of a "standard installation".

Are there good examples of using tc to emulate a crappy connection?

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