Unless otherwise configured, the client libraries use Application Default Credentials to authenticate with Google Cloud Services. While this works for most applications, in some cases you may need to override this default. You can do so by providing the UnifiedCredentialsOption The following example shows how to explicitly load a service account key file:
[](std::string const& keyfile) {
auto is = std::ifstream(keyfile);
is.exceptions(std::ios::badbit); // Minimal error handling in examples
auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
auto options =
google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
google::cloud::MakeServiceAccountCredentials(contents));
return google::cloud::beyondcorp_appconnections_v1::
AppConnectionsServiceClient(
google::cloud::beyondcorp_appconnections_v1::
MakeAppConnectionsServiceConnection(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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-08 UTC."],[[["This page provides documentation for various versions of the BeyondCorp C++ client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The latest stable version documented is 2.36.0, while the most recent release candidate is version 2.37.0-rc, offering access to newer features and potential changes."],["The client libraries default to using Application Default Credentials for Google Cloud Services authentication, but this can be overridden using the `UnifiedCredentialsOption`."],["The guide demonstrates how to explicitly load a service account key file for authentication, providing a code snippet as an example."],["Links to service account examples are provided for `AppConnectionsServiceClient`, `AppConnectorsServiceClient`, and `AppGatewaysServiceClient` classes, all within version 2.24.0."]]],[]]