fix: remove metainfo headers when received#41
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Millione merged 2 commits intocloudwego:mainfrom Sep 26, 2022
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Motivation
When a service call chain exists like
A->B->Cand B is just forward A's request and backward C's response, theTransientandBackwardmetainfo inReqandRespwill behave unexpected and keep transferring all the way.Solution
When
ReqandRespreveived, remove corresponded metainfo in metadata headers.