From 214746bca22c0f8087709596484f03150ad67fa5 Mon Sep 17 00:00:00 2001
From: JustArchi <JustArchi@JustArchi.net>
Date: Fri, 19 Aug 2016 04:10:49 +0200
Subject: [PATCH] Optimize updating of server list We can compare new endpoints
 firstly, to save Save() call if they're equal values-wise.

---
 ArchiSteamFarm/InMemoryServerListProvider.cs | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/ArchiSteamFarm/InMemoryServerListProvider.cs b/ArchiSteamFarm/InMemoryServerListProvider.cs
index e1046e8c9..cedf1cf0b 100644
--- a/ArchiSteamFarm/InMemoryServerListProvider.cs
+++ b/ArchiSteamFarm/InMemoryServerListProvider.cs
@@ -40,17 +40,19 @@ namespace ArchiSteamFarm {
 
 		public Task<IEnumerable<IPEndPoint>> FetchServerListAsync() => Task.FromResult<IEnumerable<IPEndPoint>>(Servers);
 
-		public Task UpdateServerListAsync(IEnumerable<IPEndPoint> endpoints) {
-			if (endpoints == null) {
-				Logging.LogNullError(nameof(endpoints));
+		public Task UpdateServerListAsync(IEnumerable<IPEndPoint> endPoints) {
+			if (endPoints == null) {
+				Logging.LogNullError(nameof(endPoints));
 				return Task.Delay(0);
 			}
 
-			Servers.Clear();
-			foreach (IPEndPoint endpoint in endpoints) {
-				Servers.Add(endpoint);
+			HashSet<IPEndPoint> newEndPoints = new HashSet<IPEndPoint>(endPoints);
+			if (Servers.SetEquals(newEndPoints)) {
+				return Task.Delay(0);
 			}
 
+			Servers = newEndPoints;
+
 			ServerListUpdated(this, EventArgs.Empty);
 
 			return Task.Delay(0);