## Reference

### Design details

Broadly, `istio-cni` accomplishes ambient redirection by instructing ztunnel to set up sockets within the application pod network namespace, where:

  // ClientConfig defines how to communicate with the hook.
  // Required
  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks

// of resourceRules or nonResourceRules matches the request.
message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.

// of resourceRules or nonResourceRules matches the request.
message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.

}

// CarpList is a list of Carps.
message CarpList {
  // Standard list metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;

  // List of carps.
  // More info: http://kubernetes.io/docs/user-guide/carps
  repeated Carp items = 2;
}

Copyright (C) 2014-2019, Matt Butcher and Matt Farina

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

  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 2;

  // ResourceRules describes what operations on what resources/subresources the ValidatingAdmissionPolicy matches.
  // The policy cares about an operation if it matches _any_ Rule.
  // +listType=atomic
  // +optional
  repeated NamedRuleWithOperations resourceRules = 3;

// of resourceRules or nonResourceRules matches the request.
message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.

// of resourceRules or nonResourceRules matches the request.
message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.