(part of keyserver pool) redirects to ... unknown location?

Werner Koch wk at gnupg.org
Mon Sep 16 15:27:14 CEST 2019

On Mon, 16 Sep 2019 10:11, ionic at ionic.de said:

> which also means that requests to URLs like http://keys.gnupg.net will sometimes
> redirect a user to that location.

That is not correct.  For quite some time that address is a hardwired to
avoid problems DNS problems (https://dev.gnupg.org/T3755):

  /* We used to have DNS CNAME redirection from the URLs below to
   * sks-keyserver pools.  The idea was to allow for a quick way to
   * switch to a different set of pools.  The problem with that
   * approach is that TLS needs to verify the hostname and - because
   * DNS is not secured - it can only check the user supplied hostname
   * and not a hostname from a CNAME RR.  Thus the final server all
   * need to have certificates with the actual pool name as well as
   * for keys.gnupg.net - that would render the advantage of
   * keys.gnupg.net useless and so we better give up on this.  Because
   * the keys.gnupg.net URL are still in widespread use we do a static
   * mapping here.
  if (!strcmp (uri, "hkps://keys.gnupg.net")
      || !strcmp (uri, "keys.gnupg.net"))
    uri = "hkps://hkps.pool.sks-keyservers.net";
  else if (!strcmp (uri, "https://keys.gnupg.net"))
    uri = "https://hkps.pool.sks-keyservers.net";
  else if (!strcmp (uri, "hkp://keys.gnupg.net"))
    uri = "hkp://hkps.pool.sks-keyservers.net";
  else if (!strcmp (uri, "http://keys.gnupg.net"))
    uri = "http://hkps.pool.sks-keyservers.net";
  else if (!strcmp (uri, "hkps://http-keys.gnupg.net")
           || !strcmp (uri, "http-keys.gnupg.net"))
    uri = "hkps://ha.pool.sks-keyservers.net";
  else if (!strcmp (uri, "https://http-keys.gnupg.net"))
    uri = "https://ha.pool.sks-keyservers.net";
  else if (!strcmp (uri, "hkp://http-keys.gnupg.net"))
    uri = "hkp://ha.pool.sks-keyservers.net";
  else if (!strcmp (uri, "http://http-keys.gnupg.net"))
    uri = "http://ha.pool.sks-keyservers.net";



Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.
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