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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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\u003eThe latest version available is 2.37.0-rc, which can be accessed via the provided link.\u003c/p\u003e\n"],["\u003cp\u003eThe content provides a list of versions, ranging from the latest 2.37.0-rc down to version 2.10.1, all relating to \u003ccode\u003estructgoogle_1_1cloud_1_1AuthorityOption\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation outlines how to configure the "authority" attribute for gRPC and REST requests, which relates to the \u003ccode\u003eauthority()\u003c/code\u003e field in \u003ccode\u003egrpc::ClientContext\u003c/code\u003e for gRPC and the \u003ccode\u003eHost\u003c/code\u003e header for REST.\u003c/p\u003e\n"],["\u003cp\u003eSetting the authority option to an empty string will have no effect, meaning that no headers are set.\u003c/p\u003e\n"],["\u003cp\u003eThe alias of the AuthorityOption is a string, as specified in the Type Alias section.\u003c/p\u003e\n"]]],[],null,[]]
