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DarkBASIC Professional Discussion / Calculate latency

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Derekioh
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Posted: 12th Jul 2010 02:24
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Hi, I'm working on a network module and i was wondering how to calculate latency. I need to be able to measure it from the client side.

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KISTech
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Posted: 12th Jul 2010 03:24
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Latency from the client perspective.

- Grab the value of the timer and store it
- Send a ping packet to the server
- Have the server do nothing with it, just send it right back
- Compare the difference between the current timer and what was stored

That's the number of milliseconds latency you have round trip from client to server and back.

Do it the opposite way to find the latency from the Server's perspective.

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Derekioh
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Posted: 12th Jul 2010 05:42
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ok, that seems simple enough. thx

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IanM
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Posted: 12th Jul 2010 15:14
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Do it several times for averages and worst-times, and track it during your session too. The Internet is an unpredictable beast and the amount of latency can potentially change drastically within a few minutes.

Utility plug-ins collection (updated 02 Mar 2010) and
http://www.matrix1.demon.co.uk
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Hawkblood
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Posted: 12th Jul 2010 20:21
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Another thing you may want to consider is packet loss if you are using UDP.

The fastest code is the code never written.
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