1.20.1 (#9333)

patches/server/Optimize-Network-Manager-and-add-advanced-packet-sup.patch

@@ -269,8 +269,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          this.preparing = false;
 +        clearPacketQueue(); // Paper
          // Spigot End
-         if (this.channel.isOpen()) {
-             this.channel.close(); // We can't wait as this may be called from an event loop.
+         if (this.channel == null) {
+             this.delayedDisconnect = disconnectReason;
 @@ -0,0 +0,0 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
      public void handleDisconnection() {
          if (this.channel != null && !this.channel.isOpen()) {