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 discoveryengine_v1::CompletionServiceClient:
// 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 client = google::cloud::discoveryengine_v1::CompletionServiceClient(
google::cloud::discoveryengine_v1::MakeCompletionServiceConnection(
options));
Follow these links to find examples for other *Client classes:
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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."],[[["This page details how to override the default endpoint for the Google Cloud C++ client library for Discovery Engine."],["The latest release candidate version is 2.37.0-rc, with several stable releases dating back to version 2.15.1 also available."],["To override the default endpoint, use `EndpointOption` when initializing the client library, such as demonstrated in the `CompletionServiceClient` example."],["Examples are provided for various `*Client` classes, including `CompletionServiceClient`, `ConversationalSearchServiceClient`, and `DataStoreServiceClient`, among others."],["The `EndpointOption` override is often used in configurations with Private Google Access, allowing you to specify \"private.googleapis.com\" as the endpoint."]]],[]]