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_EDGE_NETWORK_ENDPOINT=... overrides the EndpointOption (which defaults to "edgenetwork.googleapis.com") used by MakeEdgeNetworkConnection().
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis page lists the available versions of the Edge Network C++ library, ranging from the latest release candidate version \u003ccode\u003e2.37.0-rc\u003c/code\u003e down to version \u003ccode\u003e2.19.0\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables can be utilized to configure the library's behavior, and there are also in-code functions that allow you to configure it as well.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_CPP_EDGE_NETWORK_ENDPOINT\u003c/code\u003e allows for overriding the default endpoint used by \u003ccode\u003eMakeEdgeNetworkConnection()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eLogging can be enabled via environment variables such as \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING\u003c/code\u003e and \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG\u003c/code\u003e to assist in gRPC call tracing and to ensure that the libraries logging infrastructure is connected to the console, respectively.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e is an environment variable used to set the GCP project in examples and tests, however, it does not modify the library itself.\u003c/p\u003e\n"]]],[],null,[]]
