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68 lines
4.3 KiB
Diff
68 lines
4.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 15 Oct 2017 00:29:07 +0100
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Subject: [PATCH] revert serverside behavior of keepalives
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This patch intends to bump up the time that a client has to reply to the
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server back to 30 seconds as per pre 1.12.2, which allowed clients
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more than enough time to reply potentially allowing them to be less
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tempermental due to lag spikes on the network thread, e.g. that caused
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by plugins that are interacting with netty.
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We also add a system property to allow people to tweak how long the server
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will wait for a reply. There is a compromise here between lower and higher
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values, lower values will mean that dead connections can be closed sooner,
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whereas higher values will make this less sensitive to issues such as spikes
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from networking or during connections flood of chunk packets on slower clients,
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at the cost of dead connections being kept open for longer.
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diff --git a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
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index 07d2e60bcd7d1f3ba2f8005ec496561b3648ae86..382920335337c8d0abd8b1f600fddd391249fe21 100644
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--- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
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@@ -69,7 +69,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
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protected final MinecraftServer server;
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public final Connection connection; // Paper
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private final boolean transferred;
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- private long keepAliveTime;
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+ private long keepAliveTime = Util.getMillis(); // Paper
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private boolean keepAlivePending;
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private long keepAliveChallenge;
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private long closedListenerTime;
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@@ -77,6 +77,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
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private int latency;
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private volatile boolean suspendFlushingOnServerThread = false;
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public final java.util.Map<java.util.UUID, net.kyori.adventure.resource.ResourcePackCallback> packCallbacks = new java.util.concurrent.ConcurrentHashMap<>(); // Paper - adventure resource pack callbacks
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+ private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
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public ServerCommonPacketListenerImpl(MinecraftServer minecraftserver, Connection networkmanager, CommonListenerCookie commonlistenercookie, ServerPlayer player) { // CraftBukkit
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this.server = minecraftserver;
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@@ -227,18 +228,22 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
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protected void keepConnectionAlive() {
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this.server.getProfiler().push("keepAlive");
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- long i = Util.getMillis();
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+ // Paper start - give clients a longer time to respond to pings as per pre 1.12.2 timings
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+ // This should effectively place the keepalive handling back to "as it was" before 1.12.2
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+ long currentTime = Util.getMillis();
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+ long elapsedTime = currentTime - this.keepAliveTime;
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- if (!this.isSingleplayerOwner() && i - this.keepAliveTime >= 25000L) { // CraftBukkit
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- if (this.keepAlivePending) {
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+ if (!this.isSingleplayerOwner() && elapsedTime >= 15000L) { // Paper - use vanilla's 15000L between keep alive packets
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+ if (this.keepAlivePending && !this.processedDisconnect && elapsedTime >= KEEPALIVE_LIMIT) { // Paper - check keepalive limit, don't fire if already disconnected
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this.disconnect(ServerCommonPacketListenerImpl.TIMEOUT_DISCONNECTION_MESSAGE);
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- } else if (this.checkIfClosed(i)) {
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+ } else if (this.checkIfClosed(currentTime)) { // Paper
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this.keepAlivePending = true;
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- this.keepAliveTime = i;
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- this.keepAliveChallenge = i;
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+ this.keepAliveTime = currentTime;
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+ this.keepAliveChallenge = currentTime;
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this.send(new ClientboundKeepAlivePacket(this.keepAliveChallenge));
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}
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}
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+ // Paper end - give clients a longer time to respond to pings as per pre 1.12.2 timings
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this.server.getProfiler().pop();
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}
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