I want to add a custom header in request with C++ client using “ *Custom-Metadata”，* and the header-value pair is fixed。 Acrrording to HTTP2， the header should be cached by client and server, and only transfer a HPACKED header presented by a index-num . but when i check the Tcpdump data, I found the header was not indexed at all. the version i used : grpc-v1100. I checked the source code, and i found that grpc not support custom-header to be indexed. I wander why doed grpc c++ not impelement this , and any project to add support for indexing custom-header?
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