syntax = "proto3";
package flowpb;
option go_package = "github.com/netsampler/goflow2/pb;flowpb";

message FlowMessage {

  enum FlowType {
    FLOWUNKNOWN = 0;
    SFLOW_5 = 1;
    NETFLOW_V5 = 2;
    NETFLOW_V9 = 3;
    IPFIX = 4;
  }
  FlowType Type = 1;

  uint64 TimeReceived = 2;
  uint32 SequenceNum = 4;
  uint64 SamplingRate = 3;

  uint32 FlowDirection = 42;

  // Sampler information
  bytes SamplerAddress = 11;

  // Found inside packet
  uint64 TimeFlowStart = 38;
  uint64 TimeFlowEnd = 5;

  // Size of the sampled packet
  uint64 Bytes = 9;
  uint64 Packets = 10;

  // Source/destination addresses
  bytes SrcAddr = 6;
  bytes DstAddr = 7;

  // Layer 3 protocol (IPv4/IPv6/ARP/MPLS...)
  uint32 Etype = 30;

  // Layer 4 protocol
  uint32 Proto = 20;

  // Ports for UDP and TCP
  uint32 SrcPort = 21;
  uint32 DstPort = 22;

  // Interfaces
  uint32 InIf = 18;
  uint32 OutIf = 19;

  // Ethernet information
  uint64 SrcMac = 27;
  uint64 DstMac = 28;

  // Vlan
  uint32 SrcVlan = 33;
  uint32 DstVlan = 34;
  // 802.1q VLAN in sampled packet
  uint32 VlanId = 29;

  // VRF
  uint32 IngressVrfID = 39;
  uint32 EgressVrfID = 40;

  // IP and TCP special flags
  uint32 IPTos = 23;
  uint32 ForwardingStatus = 24;
  uint32 IPTTL = 25;
  uint32 TCPFlags = 26;
  uint32 IcmpType = 31;
  uint32 IcmpCode = 32;
  uint32 IPv6FlowLabel = 37;
  // Fragments (IPv4/IPv6)
  uint32 FragmentId = 35;
  uint32 FragmentOffset = 36;
  uint32 BiFlowDirection = 41;

  // Autonomous system information
  uint32 SrcAS = 14;
  uint32 DstAS = 15;

  bytes NextHop = 12;
  uint32 NextHopAS = 13;

  // Prefix size
  uint32 SrcNet = 16;
  uint32 DstNet = 17;

  // MPLS information
  bool HasMPLS = 53;
  uint32 MPLSCount = 54;
  uint32 MPLS1TTL = 55; // First TTL
  uint32 MPLS1Label = 56; // First Label
  uint32 MPLS2TTL = 57; // Second TTL
  uint32 MPLS2Label = 58; // Second Label
  uint32 MPLS3TTL = 59; // Third TTL
  uint32 MPLS3Label = 60; // Third Label
  uint32 MPLSLastTTL = 61; // Last TTL
  uint32 MPLSLastLabel = 62; // Last Label

  // Custom fields: start after ID 1000:
  // uint32 MyCustomField = 1000;

}