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::websecurityscanner_v1::WebSecurityScannerClient(
google::cloud::websecurityscanner_v1::MakeWebSecurityScannerConnection(
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 latest version of the Web Security Scanner documentation is 2.37.0-rc, but the page lists many previous versions down to 2.11.0, providing access to documentation for different release points.\u003c/p\u003e\n"],["\u003cp\u003eBy default, client libraries utilize Application Default Credentials for authentication with Google Cloud Services, but users have the option to override this behavior.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code example demonstrates how to override default credentials by explicitly loading a service account key file, using the UnifiedCredentialsOption.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation references best practices for managing service account keys and provides links to Authentication Components for those looking for more information.\u003c/p\u003e\n"],["\u003cp\u003eThe versions are all related to websecurityscanner-override-authentication, meaning all versions pertain to this same function.\u003c/p\u003e\n"]]],[],null,[]]
