For REST-based services using HTTP/1.1 or HTTP/1.0 this is the Host header.
Setting this option to the empty string has no effect, i.e., no headers are set. This can be useful if you are not using Google's production environment.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-26 UTC."],[[["The webpage provides documentation for the `AuthorityOption` in the Google Cloud C++ library, covering versions from 2.10.1 up to the latest release candidate 2.37.0-rc."],["`AuthorityOption` configures the authority attribute for gRPC and REST requests, setting the `authority()` field in `grpc::ClientContext` for gRPC or the `Host` header for REST."],["Setting `AuthorityOption` to an empty string will result in no headers being set, which can be useful outside of Google's production environments."],["The `AuthorityOption` type is defined as an alias of `std::string`, offering flexibility in how it is set and managed."]]],[]]
