In some cases, you may need to override the default endpoint used by the client library. Use the EndpointOption when initializing the client library to change this default.
For example, this will override the default endpoint for publicca_v1::PublicCertificateAuthorityServiceClient:
// This configuration is common with Private Google Access:
// https://cloud.google.com/vpc/docs/private-google-access
auto options = google::cloud::Options{}.set<google::cloud::EndpointOption>(
"private.googleapis.com");
auto vpc_client =
google::cloud::publicca_v1::PublicCertificateAuthorityServiceClient(
google::cloud::publicca_v1::
MakePublicCertificateAuthorityServiceConnection(options));
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 webpage provides documentation for overriding the default endpoint used by the client library, specifically within the context of Google Cloud's C++ client.\u003c/p\u003e\n"],["\u003cp\u003eVersion 2.37.0-rc is the latest release available, with previous versions ranging from 2.36.0 down to 2.25.1, all of which are listed with links for their documentation.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eEndpointOption\u003c/code\u003e is the mechanism used to change the default endpoint when initializing the client library.\u003c/p\u003e\n"],["\u003cp\u003eOverriding the endpoint is relevant when configurations, like Private Google Access, require directing traffic to \u003ccode\u003eprivate.googleapis.com\u003c/code\u003e instead of the default.\u003c/p\u003e\n"],["\u003cp\u003eThe code example shows how to override the endpoint for \u003ccode\u003epublicca_v1::PublicCertificateAuthorityServiceClient\u003c/code\u003e to \u003ccode\u003eprivate.googleapis.com\u003c/code\u003e using the \u003ccode\u003eEndpointOption\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]