From 27fdafd2313527b586e267da9f857899dfbd390d Mon Sep 17 00:00:00 2001
From: Kleissner <peter@kleissner.investments>
Date: Tue, 6 Jul 2021 13:37:27 +0200
Subject: [PATCH] Only set error filter function if not already set, which is
 important for callers to intercept the init messages.

---
 Filter.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Filter.go b/Filter.go
index bfee8e7..39aefa0 100644
--- a/Filter.go
+++ b/Filter.go
@@ -30,7 +30,10 @@ func initFilters() {
 	Filters.NewPeer = func(peer *PeerInfo, connection *Connection) {}
 	Filters.NewPeerConnection = func(peer *PeerInfo, connection *Connection) {}
 
-	Filters.LogError = DefaultLogError
+	// Only set the error function if not already set before init.
+	if Filters.LogError == nil {
+		Filters.LogError = DefaultLogError
+	}
 }
 
 // DefaultLogError is the default error logging function