QingJuBaiTang

### Environment * Dubbo version: 3.1.3 * Operating System version: macos * Java version: 1.8 ### Steps to reproduce this issue 1. 通过继承AbstractProxyProtocol实现一个自定义protocol 2. 不断的发起rpc调用（rpc调用需要抛出异常） ### Expected Behavior 正常调用，正常处理异常 ###...