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Unable to stop Unbound in Windows console (does not respond to CTRL+C command) #624

NativeDevMan opened this issue Feb 10, 2022 · 1 comment


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Unable to stop Unbound in Windows console (does not respond to CTRL+C command).
I have not met another application that does not know how to stop on CTRL + C. Fix this glaring bug please.

To reproduce
unbound.exe -d -p -c unbound.conf


  • Unbound version: 1.15.0
  • OS: Windows
  • unbound -V output: Version 1.15.0

Configure line: --host=x86_64-w64-mingw32 --build=x86_64-redhat-linux-gnu --target=x86_64-w64-mingw32 --prefix=/usr/x86_64-w64-mingw32/sys-root/mingw --exec-prefix=/usr/x86_64-w64-mingw32/sys-root/mingw --bindir=/usr/x86_64-w64-mingw32/sys-root/mingw/bin --sbindir=/usr/x86_64-w64-mingw32/sys-root/mingw/sbin --sysconfdir=/usr/x86_64-w64-mingw32/sys-root/mingw/etc --datadir=/usr/x86_64-w64-mingw32/sys-root/mingw/share --includedir=/usr/x86_64-w64-mingw32/sys-root/mingw/include --libdir=/usr/x86_64-w64-mingw32/sys-root/mingw/lib --libexecdir=/usr/x86_64-w64-mingw32/sys-root/mingw/libexec --localstatedir=/usr/x86_64-w64-mingw32/sys-root/mingw/var --sharedstatedir=/usr/x86_64-w64-mingw32/sys-root/mingw/com --mandir=/usr/x86_64-w64-mingw32/sys-root/mingw/share/man --infodir=/usr/x86_64-w64-mingw32/sys-root/mingw/share/info --enable-debug --enable-static-exe --disable-flto --disable-gost --with-ssl=/home/wouter/src/unbound/unbound-dist-slSyV9/sslinstall --with-libexpat=/home/wouter/src/unbound/unbound-dist-slSyV9/wxpinstall
Linked libs: event winsock (it uses WSAWaitForMultipleEvents), OpenSSL 3.0.0 7 sep 2021
Linked modules: dns64 respip validator iterator

BSD licensed, see LICENSE in source package for details.
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Thanks for the report! The issue is likely that there was no SIGBREAK handling in some parts of the code. The commit patches this to add the SIGBREAK handler to the list of signals that causes unbound to stop, much like SIGINT on Linux and FreeBSD.

This adds the code to the repository, and it is an improvement. I do not know if it actually works now for you, but it seems very likely.

jedisct1 added a commit to jedisct1/unbound that referenced this issue Feb 11, 2022
* nlnet/master: (33 commits)
  - Fix NLnetLabs#618: enabling interface-automatic disables DNS-over-TLS.   Adds the option to list interface-automatic-ports.
  - Fix NLnetLabs#624: Unable to stop Unbound in Windows console (does not   respond to CTRL+C command).
  Release 1.15.0 on 10 feb 2022. The repository continues with version 1.15.1. And Changelog note.
  Note 1.15.0rc1 tag creation in Changelog. - Tag for 1.15.0rc1 created.
  - Fix that TCP interface does not use TLS when TLS is also configured.
  - Fix NLnetLabs#412: cache invalidation issue with CNAME+A.
  - Fix for NLnetLabs#611: Integer overflow in sldns_wire2str_pkt_scan.
  - Update contrib/aaaa-filter-iterator.patch with diff for current   software version.
  - Fix docker splint test to use more portable uname.
  - please clang analyzer for loop in test code.
  - Changelog entry clarification.
  - Fix header comment for doxygen for authextstrtoaddr.
  - Update version number in repo to 1.15.0 for upcoming release,   since it changes the aggressive-nsec default and the ratelimit change.
  - Update stream_ssl.tdir test to also use the new forward-host notation.
  - Merge PR NLnetLabs#617: Update stub/forward-host notation to accept port and   tls-auth-name.
  Don't accidentaly introduce a troff macro
  - Change aggressive-nsec default to yes.
  Changelog entry for NLnetLabs#616 - Merge PR NLnetLabs#616: Update ratelimit logic. It also introduces   ratelimit-backoff and ip-ratelimit-backoff configuration options.
  Changelog entry for NLnetLabs#532 - Merge PR NLnetLabs#532 from Shchelk: Fix: buffer overflow bug.
  Changelog note for NLnetLabs#603: - Merge PR NLnetLabs#603 from fobser: Use OpenSSL 1.1 API to access DSA and RSA   internals.
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