transport=org.apache.dubbo.remoting.transport.codec.TransportCodec
telnet=org.apache.dubbo.remoting.telnet.codec.TelnetCodec
exchange=org.apache.dubbo.remoting.exchange.codec.ExchangeCodec
dubbo=org.apache.dubbo.rpc.protocol.dubbo.DubboCountCodec
thrift=org.apache.dubbo.rpc.protocol.thrift.ThriftCodec