syntax = "proto3";

package protocol.client;

message QuicProxyHandshake{
  oneof handshake{
    TcpProxyHandshake tcp = 1;
    IpProxyHandshake ip = 2;
    PortProxyHandshake tcp_port_mapping = 3;
    PortProxyHandshake udp_port_mapping = 4;
  }

}


message TcpProxyHandshake{
  fixed32 src_ip = 1;
  uint32 src_port = 2;
  fixed32 dst_ip = 3;
  uint32 dst_port = 4;
}
message PortProxyHandshake{
  string src_ip = 1;
  uint32 src_port = 2;
  string dst_host = 3;
  uint32 dst_port = 4;
}

message IpProxyHandshake{
  uint32 ip_next_header_protocol = 1;
  fixed32 src_ip = 2;
  fixed32 dst_ip = 3;
}

enum NatType {
  NAT_TYPE_CONE = 0;
  NAT_TYPE_SYMMETRIC = 1;
}
message NatInfo {

  NatType nat_type = 1;

  repeated fixed32 public_ips = 2;

  repeated uint32 public_udp_ports = 3;

  uint32 public_port_range = 4;

  repeated fixed32 local_ipv4s = 5;

  optional bytes ipv6 = 6;

  repeated uint32 local_udp_ports = 7;

  uint32 local_tcp_port = 8;

  uint32 public_tcp_port = 9;
}

message PunchInfo{
  NatInfo nat_info = 1;
}