Add support for bandwidth detection

[sergey-dryabzhinsky]

Something like:

• Wowza bandwidth checker - https://www.wowza.com/forums/content.php?118-How-to-test-server-to-client-bandwidth-for-RTMP-clients
• Red5 plugin - http://permalink.gmane.org/gmane.comp.web.flash.red5/5869

Api must be like: http://www.codebelt.com/actionscript-3/as3-onbwdone-error-flash-media-server-with-amazon-cloudfront/

[sergey-dryabzhinsky]

Need help with check new-module-bandwidth-detection branch. It's based on Red5 plugin. Need flash client that can check BW.

[sergey-dryabzhinsky]

Still no luck. Can't do right call for onBWCheck and onBWDone. Wander how it doing Wowza + plugin. Need wireshark dump. Or tcpdump.

[mbeacom]

@sergey-dryabzhinsky I'll see if I can get a wireshark dump this evening and post a gist.

[winkmichael]

Got an RTMP URL we can setup a player / link that does the test?

[chriswiggins]

I can test with my dev version of Wowza and capture the packets if you like @sergey-dryabzhinsky

[sergey-dryabzhinsky]

@chriswiggins That would be nice

[lavvy]

+1 On Apr 15, 2016 12:55 AM, "Sergey" notifications@github.com wrote:

@chriswiggins https://github.com/chriswiggins That would be nice

— You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub https://github.com/sergey-dryabzhinsky/nginx-rtmp-module/issues/90#issuecomment-210287639

[chriswiggins]

@sergey-dryabzhinsky have emailed you a PCAP file with the data in it. Please let us know how you get on :+1:

[sergey-dryabzhinsky]

Well, the main difference is:

1. 'payload' data:

   • wowza send array(double)[1800]
   • my code send string[16kb]

   But it sends empty string in first message, so there should be no error with my code I think

2. wowza starts checking right after connection. I'll try to make similar behaviour.

[sergey-dryabzhinsky]

Updated branch 'new-module-bandwidth-detection':

• rebase with master
• add some fixes and suggestions using @chriswiggins PCAP file

[sergey-dryabzhinsky]

Here some description on options (app level) with default values:

• auto_start_on_connect off; - Run checks right after client connects
• auto_sense_bw off; - Do heuristic calculation via several onBwCheck calls
• latency_min 10ms; - Minimal suggested latency
• latency_max 800ms; - Maximum suggested latency (can be worse)
• latency_undef 100ms; - Undetectable by some error/reason latency default value
• test_time 2s; - Auto sense test time

Any naming suggestions are welcome.

[sergey-dryabzhinsky]

Probably prefix bw_ needed.

[sergey-dryabzhinsky]

Options names changed:

• bw_auto_start off; - Run checks right after client connects
• bw_auto_sense off; - Do heuristic calculation via several onBwCheck calls
• bw_latency_min 10ms; - Minimal suggested latency
• bw_latency_max 800ms; - Maximum suggested latency (can be worse)
• bw_latency_undef 100ms; - Undetectable by some error/reason latency default value
• bw_test_time 2s; - Auto sense test time

[chriswiggins]

@sergey-dryabzhinsky how are you getting on with this?

What benefit does bandwidth detection give us?

[sergey-dryabzhinsky]

@chriswiggins If you have several servers (regional for example) you can connect to each, check latency, bandwidth and choose fastest.

[lavvy]

+1 On Apr 20, 2016 7:18 PM, "Sergey" notifications@github.com wrote:

@chriswiggins https://github.com/chriswiggins If you have several servers (regional for example) you can connect to each, check latency and choose fastest.

— You are receiving this because you commented. Reply to this email directly or view it on GitHub https://github.com/sergey-dryabzhinsky/nginx-rtmp-module/issues/90#issuecomment-212649383

[chriswiggins]

Ah right ok nice. Understand the importance then! 👍

[sergey-dryabzhinsky]

Still not tested. Need to build some simple flash test app.