From 1c4b484a56011bcdb50d987498477f276f2dd42a Mon Sep 17 00:00:00 2001
From: Max Kellermann <mk@cm4all.com>
Date: Fri, 21 May 2021 15:01:26 +0200
Subject: [PATCH] avahi/Poll: use FineTimerEvent in AvahiTimeout

libavahi-client uses this one to schedule events immediately.
However, CoarseTimerEvent may be called too late, and cause timeouts.
---
 src/zeroconf/avahi/Poll.cxx | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/zeroconf/avahi/Poll.cxx b/src/zeroconf/avahi/Poll.cxx
index 1d0f39895..6f9931d25 100644
--- a/src/zeroconf/avahi/Poll.cxx
+++ b/src/zeroconf/avahi/Poll.cxx
@@ -19,7 +19,7 @@
 
 #include "Poll.hxx"
 #include "event/SocketEvent.hxx"
-#include "event/CoarseTimerEvent.hxx"
+#include "event/FineTimerEvent.hxx"
 #include "time/Convert.hxx"
 
 static constexpr unsigned
@@ -78,7 +78,11 @@ private:
 };
 
 struct AvahiTimeout final {
-	CoarseTimerEvent event;
+	/* note: cannot use CoarseTimerEvent because libavahi-client
+	   sometimes schedules events immediately, and
+	   CoarseTimerEvent may delay the timer callback for too
+	   long, causing timeouts */
+	FineTimerEvent event;
 
 	const AvahiTimeoutCallback callback;
 	void *const userdata;