Thank you very much for answer . I get it，i think. And what do you mean by "not compressiable"，is this scenrio you are talking about: the header value is often changing thus grpc have to compress it in almost every request?
在2024年4月10日星期三 UTC+8 03:12:23<Craig Tiller> 写道： > You're right that gRPC C++ doesn't compress arbitrary metadata: we get > some performance advantages from being able to predictably compress > important protocol metadata, and we've found that compressing arbitrary > metadata interferes with this - it's usually not compressible enough, and > when it is it's too computationally intensive to do a good job. We've > considered ways to improve that, but right now the best paths forward > likely need a breaking API change. > > On Tue, Apr 9, 2024 at 11:36 AM 'yas...@google.com' via grpc.io < > grp...@googlegroups.com> wrote: > >> gRPC does support HPACK. By grpc-v1100, do you mean gRPC 1.1? That seems >> like a really old version? Please use the latest release instead. >> >> On Friday, March 22, 2024 at 8:53:07 AM UTC-7 A-SaltedFish wrote: >> >>> 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? >>> >>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "grpc.io" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to grpc-io+u...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/grpc-io/954c31dd-eedd-4018-b0b1-c4d1d31a1202n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/grpc-io/954c31dd-eedd-4018-b0b1-c4d1d31a1202n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/45b44af2-8f50-4b52-8c38-0cac582a857fn%40googlegroups.com.
