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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 11 Mar 2018 14:13:33 -0400
Subject: [PATCH] Disable Explicit Network Manager Flushing
This seems completely pointless, as packet dispatch uses .writeAndFlush.
Things seem to work fine without explicit flushing, but incase issues arise,
provide a System property to re-enable it using improved logic of doing the
flushing on the netty event loop, so it won't do the flush on the main thread.
Renable flushing by passing -Dpaper.explicit-flush=true
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index c8e34e4f1519163fcac77606fe20c2ec9a282901..39b1d17cfb7d5c1b0f0ee449ee1c24ef050b0c0e 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -117,6 +117,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
// Paper start - NetworkClient implementation
public int protocolVersion;
public java.net.InetSocketAddress virtualHost;
+ private static boolean enableExplicitFlush = Boolean.getBoolean("paper.explicit-flush");
// Paper end
public Connection(PacketFlow side) {
@@ -317,7 +318,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
}
if (this.channel != null) {
- this.channel.flush();
+ if (enableExplicitFlush) this.channel.eventLoop().execute(() -> this.channel.flush()); // Paper - we don't need to explicit flush here, but allow opt in incase issues are found to a better version
}
if (this.tickCount++ % 20 == 0) {
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