[lwip-devel] [bug #55253] SNTP retry next server instantly result as a flood of NTP request

[Georges Palauqui]

URL:
  <https://savannah.nongnu.org/bugs/?55253>

                 Summary: SNTP retry next server instantly result as a flood
of NTP request
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: gptechinno
            Submitted on: Thu 20 Dec 2018 09:49:42 AM UTC
                Category: apps
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

In case SNTP_SUPPORT_MULTIPLE_SERVERS, when all servers NTP declared are
available on network, but theirs stratum is in Kiss of Death (so the different
requests are replied instantly with KOD), the sntp_try_next_server function
instantly launch the next request which result in a flood of requests/replies
on the network.

The provided patch resolve the problem.



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File Attachments:


-------------------------------------------------------
Date: Thu 20 Dec 2018 09:49:42 AM UTC  Name: sntp.patch  Size: 526B   By:
gptechinno

<http://savannah.nongnu.org/bugs/download.php?file_id=45702>

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