[GitHub] [incubator-brpc] dylanzhang opened a new issue #1610: 在brpc server中返回204时，body不为空

[GitBox]

dylanzhang opened a new issue #1610:
URL: https://github.com/apache/incubator-brpc/issues/1610


   **Describe the bug (描述bug)**
   在brpc server中返回204时，body不为空，不符合http规范，容易导致相关客户端断连接，引起平响开销和大量占用TIME_WAIT
   
   **To Reproduce (复现方法)**
   在example/echo_c++的server.cpp第60行，添加 
cntl->http_response().set_status_code(brpc::HTTP_STATUS_NO_CONTENT);　以期望返回结果为204
   
![image](https://user-images.githubusercontent.com/2951936/142614915-11403e8b-7da5-48eb-98a6-74c4ce5cffa2.png)
   
   结果确实是返回204了，但在抓包中发现，body是有内容的，不符合204的规范要求，导致相关服务会关闭长连接，抓包结果如下
   
![image](https://user-images.githubusercontent.com/2951936/142615236-0ed767d7-59d1-4146-8aa7-f3c35881d3f5.png)
   
   
   **Expected behavior (期望行为)**
   在返回204时，body应该为空，想请教一下，这个问题怎么修复呢？
   
   **Versions (各种版本)**
   OS:Ubuntu 18.04
   Compiler: gcc 7.5
   brpc: v0.9.7
   protobuf: 3
   
   **Additional context/screenshots (更多上下文/截图)**
   
   


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