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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-01 UTC."],[[["The latest version available is 2.37.0-rc, with links provided for this and other versions down to 2.10.1."],["This document details the configuration of the \"authority\" attribute, which is used for gRPC requests in the `grpc::ClientContext` and corresponds to the :authority pseudo-header in HTTP/2 requests."],["For REST-based services using HTTP/1.1 or HTTP/1.0, the \"authority\" attribute corresponds to the `Host` header."],["Setting the authority option to an empty string will result in no headers being set, which can be useful for non-production environments."],["The type alias for this setting is a standard string (`std::string`)."]]],[]]
