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authorLudovic Courtès <ludo@gnu.org>2016-04-20 13:12:57 +0200
committerLudovic Courtès <ludo@gnu.org>2016-04-20 13:17:52 +0200
commit967ee481e893fd77ff8ca896188e20e425331bf2 (patch)
tree68a1215e7680c0a5b2b833fa5a9b2aadc38cd870 /guix/build/download.scm
parent083b3a0e25a5369ac663081446a2f420cd2dbd6f (diff)
download: Add "%COMPAT" to the priority string.
Fixes <http://bugs.gnu.org/23311>. * guix/build/download.scm (tls-wrap): Add 'set-session-priorities!' call.
Diffstat (limited to 'guix/build/download.scm')
-rw-r--r--guix/build/download.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm
index bd354a6985..e00fa04e35 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -274,6 +274,13 @@ host name without trailing dot."
(set-session-transport-fd! session (fileno port))
(set-session-default-priority! session)
+
+ ;; The "%COMPAT" bit allows us to work around firewall issues (info
+ ;; "(gnutls) Priority Strings"); see <http://bugs.gnu.org/23311>.
+ ;; Explicitly disable SSLv3, which is insecure:
+ ;; <https://tools.ietf.org/html/rfc7568>.
+ (set-session-priorities! session "NORMAL:%COMPAT:-VERS-SSL3.0")
+
(set-session-credentials! session (make-certificate-credentials))
;; Uncomment the following lines in case of debugging emergency.