What does it mean? This is the latest version of the Tor expert bundle. The error appears regularly on the cmd terminal window.

  • Looks like ticket #21540. Didn't look into it very closely but looks like you run out of file descriptors (FD) when too many connections are opened. – Peter Gerber Apr 27 '17 at 17:03
  • (sigh) Guess I shoulda known not to rely on a consumer version of Windows :( – Batshit Apr 28 '17 at 21:08
  • Can anyone recommend a Windows patch...at least until I can get a Debian or BSD box going? – Batshit Apr 28 '17 at 21:09
  • There appears to be a fix in the master branch. You could build master yourself or cherry pick the commit. If you're lucky the fix will have been backported when the next stable release happens. (in a month or so) – Peter Gerber Apr 28 '17 at 21:51

As of Tor a fix is now included.

From the changelog:

Resolve "Failure from drain_fd: No error" warnings on Windows relays. Fixes bug 21540; bugfix on

  • Thanks for the note....I just gave up and built a Linux relay. Everything works. – Batshit May 28 '17 at 14:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.