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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis webpage lists the available versions of \u003ccode\u003estruct google::cloud::AuthorityOption\u003c/code\u003e, ranging from version 2.10.1 to 2.37.0-rc, with 2.37.0-rc being the latest release candidate.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eAuthorityOption\u003c/code\u003e configures the "authority" attribute, setting the \u003ccode\u003eauthority()\u003c/code\u003e field in \u003ccode\u003egrpc::ClientContext\u003c/code\u003e for gRPC requests and the \u003ccode\u003eHost\u003c/code\u003e header for REST-based services using HTTP/1.1 or HTTP/1.0.\u003c/p\u003e\n"],["\u003cp\u003eLeaving the \u003ccode\u003eAuthorityOption\u003c/code\u003e setting as an empty string will have no effect, and no header will be set, which is useful when not using Google's production environment.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eAuthorityOption\u003c/code\u003e is an alias of \u003ccode\u003estd::string\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
