MIT License

Copyright (c) 2012-2020 Mat Ryer, Tyler Bunnell and contributors.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

    {{- if eq (index .ProxyConfig.ProxyMetadata "ISTIO_META_ENABLE_HBONE") "true" }}
    networking.istio.io/tunnel: {{ index .ObjectMeta.Labels `networking.istio.io/tunnel` | default "http"  | quote }}
    {{- end }}

    {{- if eq (index .ProxyConfig.ProxyMetadata "ISTIO_META_ENABLE_HBONE") "true" }}
    networking.istio.io/tunnel: {{ index .ObjectMeta.Labels `networking.istio.io/tunnel` | default "http"  | quote }}
    {{- end }}

effective policy is `PERMISSIVE` (the default), the ztunnel will open a vanilla TLS HBONE tunnel (NOTE: this is not mTLS) to the Waypoint proxy and forward the traffic over that connection without presenting a client certificate. Therefore, it is absolutely critical that the waypoint proxy not assume any identity from incoming connections, even if the ztunnel is hairpinning. In other words, all traffic over TLS HBONE tunnels must be considered to be untrusted. From there, traffic is returned to the ztunnel...

This is not really so much a new protocol, but rather a name we came up with to refer to the expectations of clients and servers communicating in the mesh.

HBONE is just a standard HTTP `CONNECT` tunnel, over mutual TLS with mesh (SPIFFE) certificates, on a well known port (15008).
The target destination address is set in the `:authority` header, and additional headers can be included as well.

labels: security.istio.io/tlsMode: {{ index .ObjectMeta.Labels `security.istio.io/tlsMode` | default "istio" | quote }} {{- if eq (index .ProxyConfig.ProxyMetadata "ISTIO_META_ENABLE_HBONE") "true" }} networking.istio.io/tunnel: {{ index .ObjectMeta.Labels `networking.istio.io/tunnel` | default "http" | quote }} {{- end }} service.istio.io/canonical-name: {{ index .ObjectMeta.Labels `service.istio.io/canonical-name` | default (index .ObjectMeta.Labels `app.kubernetes.io/name`) | default (index .ObjectMeta.Labels...

  //  "decipher only",
  //  "any",
  //  "server auth",
  //  "client auth",
  //  "code signing",
  //  "email protection",
  //  "s/mime",
  //  "ipsec end system",
  //  "ipsec tunnel",
  //  "ipsec user",
  //  "timestamping",
  //  "ocsp signing",
  //  "microsoft sgc",
  //  "netscape sgc"
  // +listType=atomic
  repeated string usages = 5;

									OutlierDetection: &v1alpha32.OutlierDetection{MinHealthPercent: 10},
								},
							},
							Tunnel:        nil,
							ProxyProtocol: nil,
						},
					},
				},
			},
			configDumps: map[string][]byte{
				"productpage-v1-1234567890": config,
				"ingress":                   []byte("{}"),
			},

- one end of the socket is in the application pod
- and the other end is in ztunnel's pod

and setting up iptables rules to funnel traffic thru that socket "tube" to ztunnel and back.

                              items:
                                type: string
                              type: array
                          type: object
                        tunnel:
                          description: Configuration of tunneling TCP over other transport
                            or application layers for the host configured in the DestinationRule.
                          properties: