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::iap_v1::IdentityAwareProxyAdminServiceClient(
google::cloud::iap_v1::MakeIdentityAwareProxyAdminServiceConnection(
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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-14 UTC."],[[["This document provides versioned documentation for the Identity-Aware Proxy (IAP) C++ client library, with the latest release candidate being 2.37.0-rc and going back to version 2.11.0."],["The client libraries utilize Application Default Credentials for authentication with Google Cloud Services, which is suitable for most use cases."],["Developers can override default credentials by employing the `UnifiedCredentialsOption` and an example is demonstrated on loading a service account key file."],["Specific examples for `iap_v1::IdentityAwareProxyAdminServiceClient` and `iap_v1::IdentityAwareProxyOAuthServiceClient` are available to assist with service account configurations."],["Users should consult the provided best practices guide for secure management of service account keys."]]],[]]