okhttp: Optimize HPACK to index :path#12799
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Allow the :path pseudo-header to be added to the HPACK dynamic table in the gRPC-Java OkHttp transport. In gRPC, the :path header typically represents the service and method name (e.g., /package.Service/Method), which is constant across multiple calls to the same method. The previous HPACK implementation, inherited from OkHttp, did not index :path, treating it as potentially highly variable. By allowing :path to be indexed, subsequent gRPC calls to the same method can benefit from HPACK's dynamic table, reducing header size.
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Allow the :path pseudo-header to be added to the HPACK dynamic table in the gRPC-Java OkHttp transport.
In gRPC, the :path header typically represents the service and method name (e.g., /package.Service/Method), which is constant across multiple calls to the same method. The previous HPACK implementation, inherited from OkHttp, did not index :path, treating it as potentially highly variable.
By allowing :path to be indexed, subsequent gRPC calls to the same method can benefit from HPACK's dynamic table, reducing header size.