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_RECAPTCHA_ENTERPRISE_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "recaptchaenterprise.googleapis.com") used by MakeRecaptchaEnterpriseServiceConnection().
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::TracingComponentsOptionGOOGLE_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"]],[["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 a comprehensive list of reCAPTCHA Enterprise C++ library versions, ranging from the latest release candidate `2.37.0-rc` down to version `2.12.0`."],["Environment variables such as `GOOGLE_CLOUD_CPP_RECAPTCHA_ENTERPRISE_SERVICE_ENDPOINT` can be used to override default settings and configure library behavior."],["Tracing for gRPC calls can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and further modified with the `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` variable."],["Logging within the library can be activated by setting the `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` environment variable, which will show additional outputs on the console."],["The variable `GOOGLE_CLOUD_PROJECT=...` can be set for examples and integration tests to set the project, however it does not affect the library."]]],[]]
