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• ✅ login: junwense / name: SeanJ (52263dd, 9e498ea, 1887e3f, 2fb0561, 011c576, 8691c57, 78c6a5d, 1ebbc04, fc8f54d, ca2b44c, 4aaafae, 756a88d)
• ✅ login: jkwatson / name: John Watson (b5f8d7d, e90df86, 38bf412)

我于测试io.opentelemetry.examples.http 的io.opentelemetry.example.http.HttpServer 发现此问题，会导致客户端发送到服务端的trace断裂，因为通过http传输，header里面的大小写会变化，所以服务端需要根据此map把key转换成小写获取traceparent的信息，但是通过构造函数构造此map，会导致此方法里的key不是全部小写。

Copilot translated this from Chinese to English:

"I discovered this issue while testing the HttpServer in io.opentelemetry.examples.http from io.opentelemetry.example.http. It causes the trace sent from the client to the server to break. Because the case of the headers changes when transmitted via HTTP, the server needs to convert the key in this map to lowercase to retrieve the traceparent information. However, constructing this map through the constructor causes the keys in this method to not be all lowercase."

@junwense build failure was caused by formatting. Please run ./gradlew spotlessApply.

@junwense two things:

1. You'll need to sign the CLA before we can accept the code
2. Please add a unit test for this case.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.62%. Comparing base (fe8a7f4) to head (e90df86).
Report is 22 commits behind head on main.

@@             Coverage Diff              @@
##               main    #6524      +/-   ##
============================================
- Coverage     90.63%   90.62%   -0.02%     
- Complexity     6228     6261      +33     
============================================
  Files           679      689      +10     
  Lines         18661    18704      +43     
  Branches       1842     1844       +2     
============================================
+ Hits          16914    16950      +36     
- Misses         1189     1198       +9     
+ Partials        558      556       -2     

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closing, replaced by #6569. @junwense I apologize for messing up your PR, and I have opened up #6569 as the replacement.