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1.4.2 Smart Moving error

MrBlack

By MrBlack
in Support & Bug Reports

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MrBlack Tree Puncher

MrBlack

Posted
Posted

I have posted this error in the Smart Moving topic and Divisor says its a minecraft forge error when smart moving is installed. Any help with this would be great! :D Also, it doesn't seem to cause any problems, just a messy console. lol

 

Here is a link to the topic I have mentioned.

 

2012-11-01 15:01:45 [sEVERE] [ForgeModLoader] A critical server error occured handling a packet, kicking net.smart.moving.playerapi.NetServerHandler@79541d
java.lang.NullPointerException
at cpw.mods.fml.common.modloader.ModLoaderConnectionHandler.connectionClosed(ModLoaderConnectionHandler.java:42)
at cpw.mods.fml.common.network.NetworkRegistry.connectionClosed(NetworkRegistry.java:213)
at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionClosed(FMLNetworkHandler.java:315)
at bx.b(TcpConnection.java:449)
at im.d(NetServerHandler.java:82)
at in.b(NetworkListenThread.java:55)
at hk.b(SourceFile:30)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:664)
at hg.r(DedicatedServer.java:241)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:585)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:492)
at fp.run(SourceFile:818)

2012-11-01 15:01:45 [WARNING] [Minecraft] Failed to handle packet: java.lang.NullPointerException
java.lang.NullPointerException
at cpw.mods.fml.common.modloader.ModLoaderConnectionHandler.connectionClosed(ModLoaderConnectionHandler.java:42)
at cpw.mods.fml.common.network.NetworkRegistry.connectionClosed(NetworkRegistry.java:213)
at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionClosed(FMLNetworkHandler.java:315)
at bx.b(TcpConnection.java:449)
at im.d(NetServerHandler.java:82)
at in.b(NetworkListenThread.java:55)
at hk.b(SourceFile:30)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:664)
at hg.r(DedicatedServer.java:241)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:585)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:492)
at fp.run(SourceFile:818)

HMPerson1 Diamond Finder

HMPerson1

Posted
Posted

This is indeed a serious ML compatibility bug.

Line 42 of ModLoaderConnectionHandler is:

if (!ModLoaderHelper.sidedHelper.clientConnectionClosed(manager, mod))

 

This is within method connectionClosed(INetworkManager), who's javadocs clearly states it will be called on BOTH CLIENT AND SERVER (IConnectionHandler.java:56)

 

On the client side, ModLoaderHelper.sidedHelper is set to an instance of ModLoaderClientHelper upon said instance's construction. However, on the server side, ModLoaderHelper.sidedHelper is never set and defaults to null.

 

It may be notable that all usages of ModLoaderHelper.sidedHelper within the class ModLoaderHelper itself is guarded by null checks (ModLoaderHelper.java:127, ModLoaderHelper.java:159).

 

Hope this helps!

There's an EAQ for a reason. Read it!

"Note that failure to read this will make you look idiotic. You don't want that do you?" -- luacs1998

 

First rule of bug reports: More information is always better.

Oh, and logs OR IT DIDN'T HAPPEN!!

keepcalm Diamond Finder

keepcalm

Posted
Posted

This is an issue with Forge ModLoader (so minecraft forge, in other words).

Protip: try and find answers yourself before asking on the forum.

It's pretty likely that there is an answer.

 

Was I helpful? Give me a thank you!

 

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cpw Creeper Killer

cpw

Posted
Posted

This problem only occurs when trying to run a ModLoader mod in a dedicated server context. Hence why it is very rarely seen.

It is fixed, but to be honest, ModLoader mods don't fit very well with a dedicated server context and I recommend switching to a mod design that is...

luacs1998 World Shaper

luacs1998

Posted
Posted

In order to go smp, modloader mods had to use modloadermp in the old days. ML was client side only.

So yeah, ML mods don't work on dedicated servers unless they use MLMP/forge/hacks.

Read the EAQ before posting! OR ELSE!

 

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This isn't building better software, its trying to grab a place in the commit list of a highly visible github project.

 

www.forgeessentials.com

 

Don't PM me, I don't check this account unless I have to.

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