Override @c BlockingPublisher Default Endpoint

 namespace pubsub = ::google::cloud::pubsub; using ::google::cloud::Options; []() { // This service supports specifying a regional or locational endpoint prefix // when creating the SubscriptionAdminConnection. // For example, to connect to "europe-central2-pubsub.googleapis.com": auto pub = pubsub::BlockingPublisher( pubsub::MakeBlockingPublisherConnection("europe-central2")); // This configuration is common with Private Google Access: // https://cloud.google.com/vpc/docs/private-google-access auto vpc_pub = pubsub::BlockingPublisher(pubsub::MakeBlockingPublisherConnection( Options{}.set<google::cloud::EndpointOption>( "private.googleapis.com"))); }