From f97d16fa8aab6178ee6a37c93a6e13e6be8c30fb Mon Sep 17 00:00:00 2001 From: Christopher Faulet Date: Mon, 21 Jul 2025 11:30:41 +0200 Subject: [PATCH] BUG/MEDIUM: dns: Reset reconnect tempo when connection is finally established The issue was introduced by commit 27236f221 ("BUG/MINOR: dns: add tempo between 2 connection attempts for dns servers"). In this patch, to delay the reconnection, a timer is used on the appctx when it is created. This postpones the appctx initialization. However, once initialized, the expiration time of the underlying task is not reset. So, it is always considered as expired and the appctx is woken up in loop. The fix is quite simple. In dns_session_init(), the expiration time of the appctx's task is alwaus set to TICK_ETERNITY. This patch must be backported everywhere the commit above was backported. So as far as 2.8 for now but possibly to all stable versions. (cherry picked from commit 765f14e0e34054cd805b9974f531145d3e796967) Signed-off-by: Willy Tarreau (cherry picked from commit 4f820213ea0fbcbb13ecb26567d1f9ee5b8aa116) Signed-off-by: Christopher Faulet (cherry picked from commit eacc3ffc583db7e393c820ded6e81d6162b96102) Signed-off-by: Christopher Faulet --- src/dns.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/dns.c b/src/dns.c index cace94a..06fd836 100644 --- a/src/dns.c +++ b/src/dns.c @@ -828,6 +828,7 @@ static int dns_session_init(struct appctx *appctx) applet_expect_no_data(appctx); ds->appctx = appctx; + appctx->t->expire = TICK_ETERNITY; return 0; error: -- 1.7.10.4