[MC-27235] java socket exception errors

Running a server I'm getting several Java related errors.

2013-07-27 19:30:05 [INFO] [user] joined the game
java.net.SocketException: Connection reset
	at java.net.SocketInputStream.read(SocketInputStream.java:168)
	at java.io.FilterInputStream.read(FilterInputStream.java:116)
	at org.bouncycastle.crypto.io.CipherInputStream.nextChunk(Unknown Source)
	at org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source)
	at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:271)
	at ex.a(SourceFile:178)
	at cn.i(SourceFile:249)
	at cn.c(SourceFile:17)
	at co.run(SourceFile:94)
 
2013-07-27 14:38:18 [SEVERE] Reached end of stream for /xx.xx.xxx.xx
java.io.IOException: Bad packet id 50
	at ex.a(SourceFile:185)
	at cn.i(SourceFile:249)
	at cn.c(SourceFile:17)
	at co.run(SourceFile:94)
2013-07-27 14:40:23 [INFO] Disconnecting [user] [/xx.xx.xx.xxx:51343]: Took too long to log in
java.io.IOException: Bad packet id 31
	at ex.a(SourceFile:185)
	at cn.i(SourceFile:249)
	at cn.c(SourceFile:17)
	at co.run(SourceFile:94)

Comments 3

kumasasa 2013-08-03T06:33:53Z

Are the players connecting via Internet or via LAN ?
In the first case, I'd say: That's normal - crappy connections.

Philip Abernethy 2013-08-10T23:13:06Z

Same issue on a Linux x86_64 server (16 GB RAM, Java 7, Update 40)
2 clients, one Linux via LAN, one Windows via Internet, exception and several [SEVERE] Reached end of stream messages appearing for the windows machine mostly. But also for the LAN client a couple of times.

2013-08-10 22:23:45 [SEVERE] Reached end of stream for /<Windows client IP>
java.net.SocketException: Socket closed
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:121)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:159)
        at org.bouncycastle.crypto.io.CipherOutputStream.write(Unknown Source)
        at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
        at java.io.DataOutputStream.flush(DataOutputStream.java:123)
        at cp.run(SourceFile:121)

I don't suspect connection problems, as the ping time was around 40ms from the internet client and the Mumble connection worked fine. Also the server is connected with a 50M/5M (Up/Down) connection and the client with a 16M/1M connection.

java was started with

java -Xmx2048M -Xms512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=1 -XX:+AggressiveOpts -jar /srv/minecraft/minecraft_server.jar nogui

Speed tests on both sides showed that the connections were gerenally good and keeping up to their advertised speeds.

xPaw 2013-10-03T14:30:37Z

Can confirm, these exceptions happen from time to time on a server.

[06:27:26] [Connection #107 read thread/ERROR]: Exception on tcp connection
java.net.SocketTimeoutException: Read timed out
        at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_25]
        at java.net.SocketInputStream.read(SocketInputStream.java:150) ~[?:1.7.0_25]
        at java.net.SocketInputStream.read(SocketInputStream.java:121) ~[?:1.7.0_25]
        at java.net.SocketInputStream.read(SocketInputStream.java:203) ~[?:1.7.0_25]
        at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:288) ~[?:1.7.0_25]
        at gw.a(SourceFile:180) ~[minecraft_server.jar:?]
        at ec.j(SourceFile:251) [minecraft_server.jar:?]
        at ec.c(SourceFile:19) [minecraft_server.jar:?]
        at ed.run(SourceFile:96) [minecraft_server.jar:?]