请问这两个报错是什么问题?

[wuruilong007]

java.io.IOException: No enough bytes of data
at io.jpower.kcp.netty.Ukcp.input(Ukcp.java:56)
at io.jpower.kcp.netty.UkcpServerChildChannel.kcpInput(UkcpServerChildChannel.java:192)
at io.jpower.kcp.netty.UkcpServerChannel$UkcpServerUnsafe.read(UkcpServerChannel.java:559)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:745)

io.jpower.kcp.netty.KcpException: State=-1 after update()
at io.jpower.kcp.netty.UkcpServerChannel.run(UkcpServerChannel.java:383)
at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)
at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:125)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:745)

example里面的KcpRttClient
static final int SIZE = Integer.parseInt(System.getProperty("size", "500"));这里由200改成500就会出现
请问这两个报错是什么问题?

[szhnet]

1. java.io.IOException: No enough bytes of data
   应该是调节了mtu造成的

2. io.jpower.kcp.netty.KcpException: State=-1 after update()
   表示重传次数过多，超过了deadLink