Bug: the package size should not be greater than 8MiB

[AlexStocks]

What happened:

在 dubbogo 中，很多处定义 package size 不能大于 8MiB

What you expected to happen:

如上，既然给用户开了 getty session param 中 设定 max msg len 的口子，就不应该有上面这个限制

[sheny1xuan]

I am new here. Plz assign to me，I'll do it.

[zonghaishang]

@AlexStocks dubbo框架限制了8M大小: https://github.com/apache/dubbo/blob/868c02cbc3d1f85a92b0cdc1a98ad49372228a23/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/Constants.java#L74

[AlexStocks]

@AlexStocks dubbo框架限制了8M大小: https://github.com/apache/dubbo/blob/868c02cbc3d1f85a92b0cdc1a98ad49372228a23/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/Constants.java#L74

The reply from dubbo is "netty这边用的是共享链接，也就是所有服务共用一条tcp", so "dubbo 有个限制，包的长度不能超过 8MiB".

如果不用dubbo，只用 dubbogo，那这个限制 dubbogo 可以去掉。但现在dubbo这么搞，dubbogo也只能跟着这么玩了。