Constant DYDX_TESTNET_GRPC_URL 

pub const DYDX_TESTNET_GRPC_URL: &str;

dYdX v4 testnet gRPC URL (primary public node).

Notes

For production use, consider using DYDX_TESTNET_GRPC_URLS array with fallback logic via DydxGrpcClient::new_with_fallback().