tor/changes/ticket33029

  o Major bugfixes (directory authority):
    - Directory authorities will now send a 503 (not enough bandwidth) code to
      clients when under bandwidth pressure. Known relays and other authorities
      will always be answered regardless of the bandwidth situation. Fixes bug
      33029; bugfix on 0.1.2.5-alpha.
dirauth: Resume sending 503 directory error code Authorities were never sending back 503 error code because by design they should be able to always answer directory requests regardless of bandwidth capacity. However, that recently backfired because of a large number of requests from unknown source using the DirPort that are _not_ getting their 503 code which overloaded the DirPort leading to the authority to be unable to answer to its fellow authorities. This is not a complete solution to the problem but it will help ease off the load on the authority side by sending back 503 codes unless the connection is from a known relay or an authority. Fixes #33029 Signed-off-by: David Goulet <dgoulet@torproject.org> 2020-01-28 15:39:09 +01:00			`o Major bugfixes (directory authority):`
			`- Directory authorities will now send a 503 (not enough bandwidth) code to`
			`clients when under bandwidth pressure. Known relays and other authorities`
			`will always be answered regardless of the bandwidth situation. Fixes bug`
			`33029; bugfix on 0.1.2.5-alpha.`