From 0cca17f1a2d68d6341132eef4565ae8bde0e8bce Mon Sep 17 00:00:00 2001
From: Paulo <pnmanjos@hotmail.com>
Date: Wed, 18 Nov 2020 23:32:29 -0300
Subject: [PATCH] Add lock to InvalidSession

---
 src/Discord.Net.WebSocket/DiscordSocketClient.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Discord.Net.WebSocket/DiscordSocketClient.cs b/src/Discord.Net.WebSocket/DiscordSocketClient.cs
index 9f448c658..d53387afc 100644
--- a/src/Discord.Net.WebSocket/DiscordSocketClient.cs
+++ b/src/Discord.Net.WebSocket/DiscordSocketClient.cs
@@ -520,7 +520,15 @@ namespace Discord.WebSocket
                             _sessionId = null;
                             _lastSeq = 0;
 
-                            await ApiClient.SendIdentifyAsync(shardID: ShardId, totalShards: TotalShards, guildSubscriptions: _guildSubscriptions, gatewayIntents: _gatewayIntents).ConfigureAwait(false);
+                            await _shardedClient.AcquireIdentifyLockAsync(ShardId, _connection.CancelToken).ConfigureAwait(false);
+                            try
+                            {
+                                await ApiClient.SendIdentifyAsync(shardID: ShardId, totalShards: TotalShards, guildSubscriptions: _guildSubscriptions, gatewayIntents: _gatewayIntents).ConfigureAwait(false);
+                            }
+                            finally
+                            {
+                                _shardedClient.ReleaseIdentifyLock();
+                            }
                         }
                         break;
                     case GatewayOpCode.Reconnect: