chenBright opened a new pull request, #2458:
URL: https://github.com/apache/brpc/pull/2458

   ### What problem does this PR solve?
   
   Issue Number:
   
   Problem Summary:
   
   1. Get请求带上了Content-Lenght > 0 的header,服务端会一直在等body数据,直到客户端rpc超时。
   2. 
根据[rfc7231](https://datatracker.ietf.org/doc/html/rfc7231#section-5.1.1)规范,Post/Put请求带上Expect:
 100-continue这个header,服务端可能会回两个response:服务端在收完全部header时,回100 continue 
response让客户端继续发送body数据,等到服务端收完body后回200 ok response。目前bRPC HTTP 
client无法正确处理发送一个请求却收到两个响应的情况。
   
   ### What is changed and the side effects?
   
   Changed:
   
   1. 移除Get请求中的Content-Lenght header。
   2. 移除Expect: 100-continue header,避免服务端回100 continue response。
   
   Side effects:
   - Performance effects(性能影响):
   
   - Breaking backward compatibility(向后兼容性): 
   
   ---
   ### Check List:
   - Please make sure your changes are compilable(请确保你的更改可以通过编译).
   - When providing us with a new feature, it is best to add related 
tests(如果你向我们增加一个新的功能, 请添加相关测试).
   - Please follow [Contributor Covenant Code of 
Conduct](../../master/CODE_OF_CONDUCT.md).(请遵循贡献者准则).
   


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