syntax = "proto3";

package v2ray.core.app.router;
option csharp_namespace = "V2Ray.Core.App.Router";
option go_package = "github.com/v2fly/v2ray-core/v4/app/router";
option java_package = "com.v2ray.core.app.router";
option java_multiple_files = true;

import "common/serial/typed_message.proto";
import "common/net/port.proto";
import "common/net/network.proto";

// Domain for routing decision.
message Domain {
  // Type of domain value.
  enum Type {
    // The value is used as is.
    Plain = 0;
    // The value is used as a regular expression.
    Regex = 1;
    // The value is a root domain.
    Domain = 2;
    // The value is a domain.
    Full = 3;
  }

  // Domain matching type.
  Type type = 1;

  // Domain value.
  string value = 2;

  message Attribute {
    string key = 1;

    oneof typed_value {
      bool bool_value = 2;
      int64 int_value = 3;
    }
  }

  // Attributes of this domain. May be used for filtering.
  repeated Attribute attribute = 3;
}

// IP for routing decision, in CIDR form.
message CIDR {
  // IP address, should be either 4 or 16 bytes.
  bytes ip = 1;

  // Number of leading ones in the network mask.
  uint32 prefix = 2;
}

message GeoIP {
  string country_code = 1;
  repeated CIDR cidr = 2;
  bool reverse_match = 3;
}

message GeoIPList {
  repeated GeoIP entry = 1;
}

message GeoSite {
  string country_code = 1;
  repeated Domain domain = 2;
}

message GeoSiteList {
  repeated GeoSite entry = 1;
}

message RoutingRule {
  oneof target_tag {
    // Tag of outbound that this rule is pointing to.
    string tag = 1;

    // Tag of routing balancer.
    string balancing_tag = 12;
  }

  // List of domains for target domain matching.
  repeated Domain domain = 2;

  // List of CIDRs for target IP address matching.
  // Deprecated. Use geoip below.
  repeated CIDR cidr = 3 [deprecated = true];

  // List of GeoIPs for target IP address matching. If this entry exists, the
  // cidr above will have no effect. GeoIP fields with the same country code are
  // supposed to contain exactly same content. They will be merged during
  // runtime. For customized GeoIPs, please leave country code empty.
  repeated GeoIP geoip = 10;

  // A range of port [from, to]. If the destination port is in this range, this
  // rule takes effect. Deprecated. Use port_list.
  v2ray.core.common.net.PortRange port_range = 4 [deprecated = true];

  // List of ports.
  v2ray.core.common.net.PortList port_list = 14;

  // List of networks. Deprecated. Use networks.
  v2ray.core.common.net.NetworkList network_list = 5 [deprecated = true];

  // List of networks for matching.
  repeated v2ray.core.common.net.Network networks = 13;

  // List of CIDRs for source IP address matching.
  repeated CIDR source_cidr = 6 [deprecated = true];

  // List of GeoIPs for source IP address matching. If this entry exists, the
  // source_cidr above will have no effect.
  repeated GeoIP source_geoip = 11;

  // List of ports for source port matching.
  v2ray.core.common.net.PortList source_port_list = 16;

  repeated string user_email = 7;
  repeated string inbound_tag = 8;
  repeated string protocol = 9;

  string attributes = 15;

  string domain_matcher = 17;
}

message BalancingRule {
  string tag = 1;
  repeated string outbound_selector = 2;
  string strategy = 3;
  google.protobuf.Any strategy_settings = 4;
  string fallback_tag = 5;
}

message StrategyWeight {
  bool regexp = 1;
  string match = 2;
  float value = 3;
}

message StrategyLeastPingConfig {
  string observer_tag = 7;
}

message StrategyLeastLoadConfig {
  // weight settings
  repeated StrategyWeight costs = 2;
  // RTT baselines for selecting, int64 values of time.Duration
  repeated int64 baselines = 3;
  // expected nodes count to select
  int32 expected = 4;
  // max acceptable rtt, filter away high delay nodes. defalut 0
  int64 maxRTT = 5;
  // acceptable failure rate
  float tolerance = 6;

  string observer_tag = 7;
}

message Config {
  enum DomainStrategy {
    // Use domain as is.
    AsIs = 0;

    // Always resolve IP for domains.
    UseIp = 1;

    // Resolve to IP if the domain doesn't match any rules.
    IpIfNonMatch = 2;

    // Resolve to IP if any rule requires IP matching.
    IpOnDemand = 3;
  }
  DomainStrategy domain_strategy = 1;
  repeated RoutingRule rule = 2;
  repeated BalancingRule balancing_rule = 3;
}