1 files changed, 0 insertions, 160 deletions
diff --git a/tunnel/defaultroutemonitor.go b/tunnel/defaultroutemonitor.go
deleted file mode 100644
index 3af9042c..00000000
--- a/tunnel/defaultroutemonitor.go
+++ /dev/null
@@ -1,160 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
- */
-
-package tunnel
-
-import (
-	"log"
-	"sync"
-	"time"
-
-	"golang.org/x/sys/windows"
-	"golang.zx2c4.com/wireguard/conn"
-	"golang.zx2c4.com/wireguard/device"
-	"golang.zx2c4.com/wireguard/tun"
-	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
-)
-
-func bindSocketRoute(family winipcfg.AddressFamily, device *device.Device, ourLUID winipcfg.LUID, lastLUID *winipcfg.LUID, lastIndex *uint32, blackholeWhenLoop bool) error {
-	r, err := winipcfg.GetIPForwardTable2(family)
-	if err != nil {
-		return err
-	}
-	lowestMetric := ^uint32(0)
-	index := uint32(0)       // Zero is "unspecified", which for IP_UNICAST_IF resets the value, which is what we want.
-	luid := winipcfg.LUID(0) // Hopefully luid zero is unspecified, but hard to find docs saying so.
-	for i := range r {
-		if r[i].DestinationPrefix.PrefixLength != 0 || r[i].InterfaceLUID == ourLUID {
-			continue
-		}
-		ifrow, err := r[i].InterfaceLUID.Interface()
-		if err != nil || ifrow.OperStatus != winipcfg.IfOperStatusUp {
-			continue
-		}
-
-		iface, err := r[i].InterfaceLUID.IPInterface(family)
-		if err != nil {
-			continue
-		}
-
-		if r[i].Metric+iface.Metric < lowestMetric {
-			lowestMetric = r[i].Metric + iface.Metric
-			index = r[i].InterfaceIndex
-			luid = r[i].InterfaceLUID
-		}
-	}
-	if luid == *lastLUID && index == *lastIndex {
-		return nil
-	}
-	*lastLUID = luid
-	*lastIndex = index
-	blackhole := blackholeWhenLoop && index == 0
-	bind, _ := device.Bind().(conn.BindSocketToInterface)
-	if bind == nil {
-		return nil
-	}
-	if family == windows.AF_INET {
-		log.Printf("Binding v4 socket to interface %d (blackhole=%v)", index, blackhole)
-		return bind.BindSocketToInterface4(index, blackhole)
-	} else if family == windows.AF_INET6 {
-		log.Printf("Binding v6 socket to interface %d (blackhole=%v)", index, blackhole)
-		return bind.BindSocketToInterface6(index, blackhole)
-	}
-	return nil
-}
-
-func monitorDefaultRoutes(family winipcfg.AddressFamily, device *device.Device, autoMTU bool, blackholeWhenLoop bool, tun *tun.NativeTun) ([]winipcfg.ChangeCallback, error) {
-	var minMTU uint32
-	if family == windows.AF_INET {
-		minMTU = 576
-	} else if family == windows.AF_INET6 {
-		minMTU = 1280
-	}
-	ourLUID := winipcfg.LUID(tun.LUID())
-	lastLUID := winipcfg.LUID(0)
-	lastIndex := ^uint32(0)
-	lastMTU := uint32(0)
-	doIt := func() error {
-		err := bindSocketRoute(family, device, ourLUID, &lastLUID, &lastIndex, blackholeWhenLoop)
-		if err != nil {
-			return err
-		}
-		if !autoMTU {
-			return nil
-		}
-		mtu := uint32(0)
-		if lastLUID != 0 {
-			iface, err := lastLUID.Interface()
-			if err != nil {
-				return err
-			}
-			if iface.MTU > 0 {
-				mtu = iface.MTU
-			}
-		}
-		if mtu > 0 && lastMTU != mtu {
-			iface, err := ourLUID.IPInterface(family)
-			if err != nil {
-				return err
-			}
-			iface.NLMTU = mtu - 80
-			if iface.NLMTU < minMTU {
-				iface.NLMTU = minMTU
-			}
-			err = iface.Set()
-			if err != nil {
-				return err
-			}
-			tun.ForceMTU(int(iface.NLMTU)) // TODO: having one MTU for both v4 and v6 kind of breaks the windows model, so right now this just gets the second one which is... bad.
-			lastMTU = mtu
-		}
-		return nil
-	}
-	err := doIt()
-	if err != nil {
-		return nil, err
-	}
-
-	firstBurst := time.Time{}
-	burstMutex := sync.Mutex{}
-	burstTimer := time.AfterFunc(time.Hour*200, func() {
-		burstMutex.Lock()
-		firstBurst = time.Time{}
-		doIt()
-		burstMutex.Unlock()
-	})
-	burstTimer.Stop()
-	bump := func() {
-		burstMutex.Lock()
-		burstTimer.Reset(time.Millisecond * 150)
-		if firstBurst.IsZero() {
-			firstBurst = time.Now()
-		} else if time.Since(firstBurst) > time.Second*2 {
-			firstBurst = time.Time{}
-			burstTimer.Stop()
-			doIt()
-		}
-		burstMutex.Unlock()
-	}
-
-	cbr, err := winipcfg.RegisterRouteChangeCallback(func(notificationType winipcfg.MibNotificationType, route *winipcfg.MibIPforwardRow2) {
-		if route != nil && route.DestinationPrefix.PrefixLength == 0 {
-			bump()
-		}
-	})
-	if err != nil {
-		return nil, err
-	}
-	cbi, err := winipcfg.RegisterInterfaceChangeCallback(func(notificationType winipcfg.MibNotificationType, iface *winipcfg.MibIPInterfaceRow) {
-		if notificationType == winipcfg.MibParameterNotification {
-			bump()
-		}
-	})
-	if err != nil {
-		cbr.Unregister()
-		return nil, err
-	}
-	return []winipcfg.ChangeCallback{cbr, cbi}, nil
-}