Download
Browse source Changelog
Documentation
Project   Bug Bounty   Help us   Known bugs   TODO Protocols   CA bundle   HTTP Cookies   HTTP/2   SSL Certs Releases   Security   Version numbers   Vulnerabilities curl tool   man page   Tutorial   HTTP scripting Who and Why
libcurl
ABI API Competitors Examples Features Mailing list Related libs Using libcurl Tutorial Testimonials
Get Help
curl-library curl-users Mailing lists Book: Everything curl Video presentations Report a bug Paid support
Development
Autobuilds Code Style Contribute Deprecate Internals Release Notes Release Procedure Roadmap Run Tests Security Process Specifications Test curl
News
Changelog Release table
curl / Mailing Lists / curl-library / Single Mail
Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself.

DOH: minor bug: store_cname() is storing duplicate CNAMEs

From: Niall O'Reilly via curl-library <curl-library_at_cool.haxx.se>
Date: Mon, 25 Nov 2019 12:24:14 +0000

I’m not sure whether this is worth opening an issue.

If the target hostname is an alias, the DNS returns a CNAME in the
answer to each of the queries which Curl_doh() launches. In the
standard libcurl build, there are two of these, with QTYPE of A
and AAAA respectively.

During decoding, these are found and stored separately, although
the values are identical. I (or somebody else) may find time at
some stage to add duplicate-suppression to store_cname().

Here below is a snippet from the verbose progress message stream.
/Niall

```
* a DOH request is completed, 0 to go
* DOH Host name: www.jamm.ie
* TTL: 3150 seconds
* DOH A: 185.24.233.219
* DOH AAAA: 2a04:2e00:0001:0001:0000:0000:0000:000a
* CNAME: vps.jamm.ie
* CNAME: vps.jamm.ie
* Trying 185.24.233.219:443...

```

— Ends —

-------------------------------------------------------------------
Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library
Etiquette: https://curl.haxx.se/mail/etiquette.html
Received on 2019-11-25