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DecoderException: java.lang.IndexOutOfBoundsException #65

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mibby opened this issue Jul 21, 2016 · 14 comments
Closed

DecoderException: java.lang.IndexOutOfBoundsException #65

mibby opened this issue Jul 21, 2016 · 14 comments

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@mibby
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mibby commented Jul 21, 2016 •
edited by jamierocks
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Waterfall dev 41
Paper dev 819 (Spigot 1.10)

Only waterfall plugin used is ServerListPlus. Only modules used are cmd_list, cmd_send, and cmd_server.

01:31:17 [SEVERE] [/--redacted--:65228] <-> InitialHandler - encountered exception
io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(1) + length(1) exceeds writerIndex(1): SlicedAbstractByteBuf(ridx: 1, widx: 1, cap: 1/1, unwrapped: PooledUnsafeDirectByteBuf(ridx: 2, widx: 2, cap: 2))
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.handlerRemoved(ByteToMessageDecoder.java:219)
    at io.netty.channel.DefaultChannelPipeline.callHandlerRemoved0(DefaultChannelPipeline.java:631)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:468)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:428)
    at net.md_5.bungee.protocol.LegacyDecoder.decode(LegacyDecoder.java:37)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:411)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:961)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(1) + length(1) exceeds writerIndex(1): SlicedAbstractByteBuf(ridx: 1, widx: 1, cap: 1/1, unwrapped: PooledUnsafeDirectByteBuf(ridx: 2, widx: 2, cap: 2))
    at io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1413)
    at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:687)
    at net.md_5.bungee.protocol.DefinedPacket.readVarInt(DefinedPacket.java:100)
    at net.md_5.bungee.protocol.DefinedPacket.readVarInt(DefinedPacket.java:90)
    at net.md_5.bungee.protocol.packet.Handshake.read(Handshake.java:26)
    at net.md_5.bungee.protocol.DefinedPacket.read(DefinedPacket.java:185)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:41)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:10)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
    ... 31 more

18:42:35 [SEVERE] [/--redacted--:46742] <-> InitialHandler - encountered exception
io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(2) + length(1) exceeds writerIndex(2): SlicedAbstractByteBuf(ridx: 2, widx: 2, cap: 2/2, unwrapped: PooledUnsafeDirectByteBuf(ridx: 3, widx: 12, cap: 64))
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:280)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:396)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:961)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(2) + length(1) exceeds writerIndex(2): SlicedAbstractByteBuf(ridx: 2, widx: 2, cap: 2/2, unwrapped: PooledUnsafeDirectByteBuf(ridx: 3, widx: 12, cap: 64))
    at io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1413)
    at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:687)
    at net.md_5.bungee.protocol.DefinedPacket.readVarInt(DefinedPacket.java:100)
    at net.md_5.bungee.protocol.DefinedPacket.readVarInt(DefinedPacket.java:90)
    at net.md_5.bungee.protocol.DefinedPacket.readString(DefinedPacket.java:29)
    at net.md_5.bungee.protocol.packet.Handshake.read(Handshake.java:27)
    at net.md_5.bungee.protocol.DefinedPacket.read(DefinedPacket.java:185)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:41)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:10)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
    ... 23 more

EDIT (by @jamierocks) - Redacted ip adresses
@fuzzybot
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What server version and what plugins

@jamierocks
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  1. stated
    • bungee plugins (should be the only relevant ones): stated
    • bukkit plugins: not stated

@fuzzybot
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fuzzybot commented Jul 31, 2016 •
edited
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@jamierocks I think there are several issues open with this same issue. Just a guess, but it appears to be an issue with tab completion when no plugin (proxy or server) is handling the tab complete event and the tab complete contents is empty.

@Techcable
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We need to dump the contents of a packet on error :/
If we know what the packet actually contains we can know why it's causing errors.

@fuzzybot
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fuzzybot commented Aug 1, 2016

@Techcable how can we dump the contents of the packet on error

@Techcable
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Techcable commented Aug 5, 2016 •
edited
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@mibby What is the error with build 43?

@mibby
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mibby commented Aug 5, 2016

I'll update and let you know if / when it occurs again. It was originally just something I noticed when looking through my logs. :P

@mibby
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mibby commented Aug 6, 2016 •
edited
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@Techcable The specific IndexOutOfBoundsException error hasn't occurred yet (disabled command tab-complete on the server if that was the original cause), but I did notice these two errors from different players when going through the log. May be something of interest.

Occurred once.

03:07:14 [SEVERE] [/IP:PORT] <-> InitialHandler - encountered exception
io.netty.handler.codec.DecoderException: Error decoding packet class Handshake with contents          +-------------------------------------------------+
         |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+--------+-------------------------------------------------+----------------+
|00000000| 00 07 68 65 73 70 69 38 39                      |..player       |
+--------+-------------------------------------------------+----------------+
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:68)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:12)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.handlerRemoved(ByteToMessageDecoder.java:219)
    at io.netty.channel.DefaultChannelPipeline.callHandlerRemoved0(DefaultChannelPipeline.java:631)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:468)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:428)
    at net.md_5.bungee.protocol.LegacyDecoder.decode(LegacyDecoder.java:37)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:411)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:967)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)

Occurred 4 times.

22:39:13 [SEVERE] [/IP:PORT|PLAYER] -> UpstreamBridge - encountered exception
java.lang.IllegalArgumentException: Chat message is empty
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
    at net.md_5.bungee.connection.UpstreamBridge.handle(UpstreamBridge.java:116)
    at net.md_5.bungee.protocol.packet.Chat.handle(Chat.java:50)
    at net.md_5.bungee.netty.HandlerBoss.channelRead(HandlerBoss.java:77)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:967)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)
22:39:13 [INFO] [player] disconnected with: §fIllegalArgumentException : Chat message is empty @ com.google.common.base.Preconditions:122

@Janmm14
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Janmm14 commented Aug 6, 2016

Empty chat messages could only come from mobile apps or errounous configured (join-)bots.

@mibby
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mibby commented Aug 8, 2016

Another decoder exception and IllegalArgumentException, both from different players than above.

18:52:30 [SEVERE] [/IP:PORT] <-> InitialHandler - encountered exception
io.netty.handler.codec.DecoderException: Error decoding packet class Handshake with contents          +-------------------------------------------------+
         |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+--------+-------------------------------------------------+----------------+
|00000000| 00 07 64 6f 6d 6f 78 6f 78                      |..player       |
+--------+-------------------------------------------------+----------------+
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:68)
    at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:12)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.handlerRemoved(ByteToMessageDecoder.java:219)
    at io.netty.channel.DefaultChannelPipeline.callHandlerRemoved0(DefaultChannelPipeline.java:631)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:468)
    at io.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:428)
    at net.md_5.bungee.protocol.LegacyDecoder.decode(LegacyDecoder.java:37)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:411)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:248)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:967)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)

12:03:15 [SEVERE] [/IP:PORT|PLAYER] -> UpstreamBridge - encountered exception
java.lang.IllegalArgumentException: Chat message is empty
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
    at net.md_5.bungee.connection.UpstreamBridge.handle(UpstreamBridge.java:116)
    at net.md_5.bungee.protocol.packet.Chat.handle(Chat.java:50)
    at net.md_5.bungee.netty.HandlerBoss.channelRead(HandlerBoss.java:77)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:967)
    at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:386)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)
    at java.lang.Thread.run(Thread.java:745)
12:03:15 [INFO] [PLAYER] disconnected with: §fIllegalArgumentException : Chat message is empty @ com.google.common.base.Preconditions:122

@fuzzybot
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fuzzybot commented Aug 8, 2016

That is expected behavior. A chat message cannot and will not ever be empty from a vanilla minecraft client.

@Techcable
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The IndexOutOfBounds on the handshake packet isn't though ;)

@jamierocks
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Anyone able to confirm if this is still an issue?

@Techcable
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Techcable commented Nov 19, 2016 •
edited
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@mibby The handshake packet's completely invalid.
Field by field, 00 07 64 6f 6d 6f 78 6f 78 decodes to:

  • Protocol version: 0 (Not possibly valid)
  • Server address: player (lol nope)
  • Server port: Not specified
  • Next state: Not specified

I assume someone's trying to crash you, but we can't do much about that 😞

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@Janmm14 @mibby @fuzzybot @Techcable @jamierocks