local

type ActiveInterface struct {
	// Interface name. Name containing 'p2p' results in specific behavior.
	Name string

	// IP6 link local address. May be nil if IPPub is set.
	// One or the other must be set.
	IP6LL net.IP

	// IP4 address - may be a routable address, nil or private address.
	// If public address - may be included in the register, but typically not
	// useful.
	IP4 net.IP

	// Public addresses. IP6 address may be used for direct connections (in some
	// cases)
	IPPub []net.IP

	// Port for the UDP unicast link-local listener.
	Port int
	// Port for the UDP unicast link-local listener.
	Port4 int

	// True if this interface is an Android AP
	AndroidAP bool

	// True if this interface is connected to an Android DM node.
	AndroidAPClient bool
	// contains filtered or unexported fields
}

type LLDiscovery struct {
	Nodes map[string]*Node

	// Will be updated with the list of active interfaces
	// by Refresh() calls or provided by Android.
	// Key is the string representation of the address.
	ActiveInterfaces map[string]*ActiveInterface

	// If set, the p2p- interface name of the current active AP
	// The name may change - used to adjust the address/zone of nodes.
	// All nodes have LL addresses including the old zone - might be better to remove any known node,
	// and wait for it to reannounce or respond to our announce. It'll take some time to reconnect as well.
	ActiveP2P string

	// SSID and password of the AP
	AP     string
	APFreq string
	PSK    string
	// Set to the SSID of the main connection. 'w' param in the net status message.
	ConnectedWifi string
	WifiFreq      string
	WifiLevel     string

	// Listening on * for signed messages
	// Source for sent messages and multicasts
	UDPMsgConn *net.UDPConn
	// contains filtered or unexported fields
}

type Node struct {
	ID       string
	LastSeen time.Time

	// In seconds since first seen, last 100
	Seen []int `json:"-"`
	// Information from the node - from an announce or message.
	// Not trusted, self-signed.
	NodeAnnounce *NodeAnnounce `json:"info,omitempty"`
	LastSeen4    time.Time
	Last4        *net.UDPAddr
	LastSeen6    time.Time
	Last6        *net.UDPAddr
}

type NodeAnnounce struct {
	UA string `json:"UA,omitempty"`

	// Non-link local IPs from all interfaces. Includes public internet addresses
	// and Wifi IP4 address. Used to determine if a node is directly connected.
	IPs []*net.UDPAddr `json:"addrs,omitempty"`

	// Set if the node is an active Android AP.
	SSID string `json:"ssid,omitempty"`

	// True if the node is an active Android AP on the interface sending the message.
	// Will trigger special handling in link-local - if the receiving interface is also
	// an android client.
	AP bool `json:"AP,omitempty"`

	Ack bool `json:"ACK,omitempty"`

	// VIP of the direct parent, if this node is connected.
	// Used to determine the mesh topology.
	Vpn string `json:"Vpn,omitempty"`
}