syntax = "proto3";

package envoy.api.v2;

import "google/protobuf/wrappers.proto";

// protodoc-title: Network related configuration elements
// [V2-API-DIFF] Addresses now have .proto structure.

message Pipe {
  string path = 1;
}

message SocketAddress {
  enum Protocol {
    TCP = 0;
    UDP = 1;
  }
  Protocol protocol = 1;
  // The address for this socket.  Listeners will bind to the address.  An empty
  // address implies a bind to 0.0.0.0 or ::. It's still possible to distinguish on
  // address via the prefix/suffix matching in FilterChainMatch after connection.
  // For clusters, an address may be either an IP or hostname to be resolved via
  // DNS.  If it is a hostname, resolver_name should be set.
  string address = 2;
  oneof port_specifier {
    uint32 port_value = 3;
    // This is only valid if DNS SRV or if resolver_name is specified below
    // and the named resolver is capable of named port resolution.
    string named_port = 4;
  }
  // The name of the resolver. This must have been registered with Envoy. If this is
  // empty, a context dependent default applies. If address is a hostname this
  // should be set.  If the address is a concrete IP address, no resolution will occur.
  string resolver_name = 5;
}

message BindConfig {
  // The address to bind to when creating a socket.
  SocketAddress source_address = 1;
}

// Addresses specify either a logical or physical address and port, which are
// used to tell Envoy where to bind/listen, connect to upstream and find
// management servers.
message Address {
  oneof address {
    SocketAddress socket_address = 1;
    Pipe pipe = 2;
  }
}

// CidrRange specifies an IP Address and a prefix length to construct
// the subnet mask.
message CidrRange {
  string address_prefix = 1;
  google.protobuf.UInt32Value prefix_len = 2;
}