patchlwIP - A Lightweight TCP/IP stack - Patches: patch #9726, mDNS: probe rate limiting if more...

 
 

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patch #9726: mDNS: probe rate limiting if more then 15 conflicts occur in a 10 second period

Submitter:  Jasper Verschueren <jasperv>
Submitted:  Mon 19 Nov 2018 10:40:25 AM UTC
   
 
Category:  apps Priority:  5 - Normal
Status:  Done Privacy:  Public
Assigned to:  None Open/Closed:  Closed
Planned Release:  None

Mon 19 Nov 2018 01:33:34 PM UTC, comment #1: 

Applied, thanks!

Dirk Ziegelmeier <dziegel>
Group administrator
Mon 19 Nov 2018 10:40:25 AM UTC, original submission:  

Functionality:
According to RFC6762 section 8.1: If fifteen conflicts occur within any ten-second period, then the host MUST wait at least five seconds before each successive additional probe attempt.

Implementation:
By keeping a list of timestamps of conflicts we can easily check if 15 conflicts occurred in a 10 second time window without the need of timers.
When it does, we will change the probe wait time on restart from 0-250ms to 5 seconds.

Jasper Verschueren <jasperv>

 

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Depends on the following items: None found

Items that depend on this one: None found

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-11-19 dziegel StatusNone Done
        Open/ClosedOpen Closed
    2018-11-19 jasperv Attached File- Added 0001-mDNS-probe-rate-limiting-if-more-then-15-conflicts-o.patch, #45490

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