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[lwip-devel] [task #15104] DNS: Support look-up of other RR types
From: |
Craig McQueen |
Subject: |
[lwip-devel] [task #15104] DNS: Support look-up of other RR types |
Date: |
Tue, 4 Dec 2018 21:31:21 -0500 (EST) |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0 |
URL:
<https://savannah.nongnu.org/task/?15104>
Summary: DNS: Support look-up of other RR types
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: cmcqueen1975
Submitted on: Wed 05 Dec 2018 02:31:20 AM UTC
Category: None
Should Start On: Wed 05 Dec 2018 12:00:00 AM UTC
Should be Finished on: Wed 05 Dec 2018 12:00:00 AM UTC
Priority: 5 - Normal
Status: None
Privacy: Public
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
Effort: 0.00
_______________________________________________________
Details:
Goals:
* Allow look-up of other DNS Resource Record (RR) types such as PTR, SRV, TXT,
MX.
* Allow reverse lookups (e.g. to get the host name associated with
192.168.1.2, do a PTR look-up of 2.1.168.192.in-addr.arpa.).
* For Zeroconf, allow mDNS look-up of DNS-SD advertisements. That requires
look-up of PTR, SRV and TXT records.
Considerations, complications:
* Multiple answers (many RR responses can include multiple answers, and the
client needs to process all of them).
* Multiple responses (in the case of mDNS look-ups of DNS-SD advertisements,
there can be an unbounded number of responses from multiple network devices).
* Caching. A lot more complicated than the current case of a hostname
resolving to a single IP address.
_______________________________________________________
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<https://savannah.nongnu.org/task/?15104>
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- [lwip-devel] [task #15104] DNS: Support look-up of other RR types,
Craig McQueen <=