Packets crashing players

I have coded a Disguises but at times players crash when another player disguises saying "Internal Exception: java.io,IOExeception: an existing connecting was forcefully closed by the remote host" and at times "Internal Exception: net.minecraft.util.io.handler.codec.EncoderException: NullPointerException" anyone know of anything that may cause this?

 

MCCoding Are you using 1.7.9?

 

MCCoding are you trying to send custom packets?

 

fireblast709 FabeGabeMC I'm using 1.7.9 and for the packets I'm sending are

• PacketPlayOutSpawnEntityLiving
• PacketPlayOutEntityLook
• PacketPlayOutEntityEquipment
• PacketPlayOutEntityDestroy

 

MCCoding when are you sending these?

 

MCCoding
The only one you need to send is PacketPlayOutNamedEntitySpawn.

 

FabeGabeMC It's a mob disguise not a player disguise, so shouldn't need to use that packet.

fireblast709 I'm sending PacketPlayOutSpawnEntityLiving as soon as a player Disguises to everyone on the server and PacketPlayOutEntityLook, PacketPlayOutEntityEquipment every tick to update the players movement etc and as for PacketPlayOutEntityDestroy is when someone becomes undisguised

 

MCCoding do you happen to have more stacktrace? And check if you got crash logs (and paste them if you have any related to the crash)

 

fireblast709
The server will only spit out the logs i posted in the OP and here is what the client says

Code:

---- Minecraft Crash Report ----
// This doesn't make any sense!
 
Time: 10/1/14 11:16 AM
Description: Unexpected error
 
java.lang.NullPointerException: Unexpected error
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_149027_c(SourceFile:102)
    at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:766)
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1590)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
    at net.minecraft.client.main.Main.main(SourceFile:148)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
 
 
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
 
-- Head --
Stacktrace:
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_149027_c(SourceFile:102)
    at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:766)
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
 
-- Affected level --
Details:
    Level name: MpServer
    All players: 1 total; [EntityClientPlayerMP['PHILLIPS_71'/97, l='MpServer', x=216.83, y=23.62, z=352.09]]
    Chunk stats: MultiplayerChunkCache: 441, 441
    Level seed: 0
    Level generator: ID 02 - largeBiomes, ver 0. Features enabled: false
    Level generator options:
    Level spawn location: World: (-4871,56,-3792), Chunk: (at 9,3,0 in -305,-237; contains blocks -4880,0,-3792 to -4865,255,-3777), Region: (-10,-8; contains chunks -320,-256 to -289,-225, blocks -5120,0,-4096 to -4609,255,-3585)
    Level time: 23001127 game time, 43417811 day time
    Level dimension: 0
    Level storage version: 0x00000 - Unknown?
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
    Forced entities: 3 total; [EntitySheep['Sheep'/129, l='MpServer', x=219.75, y=22.00, z=356.50], EntityOtherPlayerMP['CantonG'/129, l='MpServer', x=212.38, y=22.00, z=357.16], EntityClientPlayerMP['PHILLIPS_71'/97, l='MpServer', x=216.83, y=23.62, z=352.09]]
    Retry entities: 0 total; []
    Server brand: CraftBukkit
    Server type: Non-integrated multiplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2432)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:916)
    at net.minecraft.client.main.Main.main(SourceFile:148)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
 
-- System Details --
Details:
    Minecraft Version: 1.7.10
    Operating System: Windows 8 (amd64) version 6.2
    Java Version: 1.8.0_11, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 200240136 bytes (190 MB) / 553017344 bytes (527 MB) up to 1060372480 bytes (1011 MB)
    JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 103
    FML: MCP v9.05 FML v7.10.25.1189 Minecraft Forge 10.13.0.1189 3 mods loaded, 3 mods active
    mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    FML{7.10.25.1189} [Forge Mod Loader] (forge-1.7.10-10.13.0.1189.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Forge{10.13.0.1189} [Minecraft Forge] (forge-1.7.10-10.13.0.1189.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Launched Version: 1.7.10-Forge10.13.0.1189
    LWJGL: 2.9.1
    OpenGL: AMD Radeon HD 7900 Series GL version 4.2.11931 Compatibility Profile Context, ATI Technologies Inc.
    GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.
 
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: [faithful32pack.zip]
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Anisotropic Filtering: Off (1)

 

MCCoding the only thing that could possibly be the cause, is that you forget to add a List of watchable objects to the packets. If that's not it then I blame Forge and move on.

 

That could be it fireblast709 because I know I have been playing around with data watchers, how do I get data watchers for the specific entity I need to sdd

 

MCCoding there is a getDataWatcher() method in the NMS Entity class.

 

fireblast709 would this be the correct class to get the DataWatchers? https://github.com/Bukkit/mc-dev/blob/master/net/minecraft/server/EntitySheep.java and I would watch datawatcher.a(16, new Byte((byte) 0)); and that's all for the sheep?

 

MCCoding
Are you sending PacketPlayOutEntityDestroy to the player being destroyed?

 

xTrollxDudex
I'm yet to actually test the undisguise method so I have never sent the packet before but I have coded the method and it sends it to everyone on the server but the player being disguised

bump

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

bump

 

Anyone have an idea? Maybe xTrollxDudex? could it be me trying to watch the name tag of the disguise? here is the data watcher

Code:java

this.dataWatcher.a(11, (byte) 0);
this.dataWatcher.a(10, "");
 
  public void setCustomNameVisible(boolean visible) {
        getDataWatcher().watch(11, (byte) (visible ? 1 : 0));
    }
 
    public boolean getCustomNameVisible() {
        return getDataWatcher().getByte(11) == 1;
    }