IP: fakeIP,
		},
		Gateway: fakeGW,
	}
)

func TestPushCNIAddEventSucceed(t *testing.T) {
	// Fake out a test HTTP server and use that instead of a real HTTP server over gRPC to validate  req/resp flows
	testServer := httptest.NewServer(http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
		res.WriteHeader(http.StatusOK)
		res.Write([]byte("server happy"))
	}))
	defer func() { testServer.Close() }()

    print("##", "*" * 25)

    for k in sorted(common):
        if q0[k] != q1[k]:
            print("## ", k)
            s0 = yaml.safe_dump(q0[k], default_flow_style=False, indent=2)
            s1 = yaml.safe_dump(q1[k], default_flow_style=False, indent=2)

            print(datadiff.diff(s0, s1, fromfile=args.orig, tofile=args.new))

    return changed + len(added) + len(removed)


def main(args):

The following diagram illustrates the flow of unauthenticated traffic with a `PERMISSIVE` policy:

```mermaid
graph TD;
src[src pod]-->|plaintext port|ztunnel{"ztunnel (L4 policy applied here)"}
ztunnel{ztunnel}-->|TLS|wp{waypoint}
wp-->|mTLS|ztunnel

![SDS decision flow](docs/sds-flow.svg)

### Default CA Flow through istio-agent

![CA Flow](docs/ca.svg)

A single SDS request from Envoy goes through a few different layers in istio-agent.

## Introduction

[Istio](https://istio.io/latest/docs/concepts/what-is-istio/) is an open platform for providing a uniform way to [integrate
microservices](https://istio.io/latest/docs/examples/microservices-istio/), manage [traffic flow](https://istio.io/latest/docs/concepts/traffic-management/) across microservices, enforce policies
and aggregate telemetry data. Istio's control plane provides an abstraction