WIP

peer/remote.go

@@ -0,0 +1,46 @@
+package peer
+
+import (
+	"net/netip"
+	"time"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"vppn/peer/control"
+)
+
+type PeerState string
+
+const (
+	StateRelayed = PeerState("RELAY")
+	StateProbing = PeerState("PROBE")
+	StateDirect  = PeerState("DIRECT")
+)
+
+type Peer struct {
+	PubKey           wgtypes.Key    // WireGuard public key.
+	VPNIP            netip.Addr     // VPN IP address.
+	IsRelay          bool           // Peer is a relay.
+	IsPublic         bool           // Peer has a public IP.
+	Endpoint4        netip.AddrPort // Reported IPv4 endpoint.
+	Endpoint6        netip.AddrPort // Reported IPv6 endpoint.
+	ObservedEndpoint netip.AddrPort // If we're public: WG handshake source endpoint.
+	LastPing         time.Time      // Time of last ping received.
+	RTT              time.Duration  // Round-trip time.
+	Role             control.Role   // Client initiates pings; server responds.
+	State            PeerState      // Current connection state.
+	Up               bool           // Is the peer alive.
+	WGEndpoint       netip.AddrPort // Endpoint currently in WG (direct/probe).
+}
+
+func (p *Peer) Alive() bool {
+	return time.Since(p.LastPing) < TimeoutInterval
+}
+
+func (p *Peer) CanRelay() bool {
+	return p.IsRelay && p.Up && p.WGEndpoint.IsValid()
+}
+
+func (p *Peer) PreferredEndpoint() netip.AddrPort {
+	return preferredEndpoint(p.Endpoint4, p.Endpoint6)
+}