A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_APP_CONNECTIONS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppConnection().
GOOGLE_CLOUD_CPP_APP_CONNECTORS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppConnectorsServiceConnection().
GOOGLE_CLOUD_CPP_APP_GATEWAYS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppGatewaysServiceConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::LoggingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-09 UTC."],[[["The webpage lists various versions of the BeyondCorp environment, ranging from the latest release candidate 2.37.0-rc down to version 2.11.0."],["Environment variables can be used to configure the library's behavior, particularly for troubleshooting, with the webpage detailing options for endpoint overrides, tracing and logging."],["The `GOOGLE_CLOUD_CPP_APP_*_SERVICE_ENDPOINT` variables can override the default endpoints used by different service connections."],["Logging can be enabled and configured via the `GOOGLE_CLOUD_CPP_ENABLE_TRACING`, `GOOGLE_CLOUD_CPP_ENABLE_CLOG`, and `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` variables."],["Setting the `GOOGLE_CLOUD_PROJECT` is used for examples and tests, but has no effect on the library itself."]]],[]]
