[client,signal,management] Add browser client support (#4415)

client/iface/wgproxy/bind/proxy.go

@@ -16,15 +16,14 @@ import (
 	"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
 )
 
-type IceBind interface {
-	SetEndpoint(fakeIP netip.Addr, conn net.Conn)
-	RemoveEndpoint(fakeIP netip.Addr)
-	Recv(ctx context.Context, msg bind.RecvMessage)
-	MTU() uint16
+type Bind interface {
+	SetEndpoint(addr netip.Addr, conn net.Conn)
+	RemoveEndpoint(addr netip.Addr)
+	ReceiveFromEndpoint(ctx context.Context, ep *bind.Endpoint, buf []byte)
 }
 
 type ProxyBind struct {
-	bind IceBind
+	bind Bind
 
 	// wgRelayedEndpoint is a fake address that generated by the Bind.SetEndpoint based on the remote NetBird peer address
 	wgRelayedEndpoint *bind.Endpoint
@@ -40,13 +39,15 @@ type ProxyBind struct {
 	isStarted  bool
 
 	closeListener *listener.CloseListener
+	mtu           uint16
 }
 
-func NewProxyBind(bind IceBind) *ProxyBind {
+func NewProxyBind(bind Bind, mtu uint16) *ProxyBind {
 	p := &ProxyBind{
 		bind:          bind,
 		closeListener: listener.NewCloseListener(),
 		pausedCond:    sync.NewCond(&sync.Mutex{}),
+		mtu:           mtu + bufsize.WGBufferOverhead,
 	}
 
 	return p
@@ -174,7 +175,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) {
 	}()
 
 	for {
-		buf := make([]byte, p.bind.MTU()+bufsize.WGBufferOverhead)
+		buf := make([]byte, p.mtu)
 		n, err := p.remoteConn.Read(buf)
 		if err != nil {
 			if ctx.Err() != nil {
@@ -190,11 +191,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) {
 			p.pausedCond.Wait()
 		}
 
-		msg := bind.RecvMessage{
-			Endpoint: p.wgCurrentUsed,
-			Buffer:   buf[:n],
-		}
-		p.bind.Recv(ctx, msg)
+		p.bind.ReceiveFromEndpoint(ctx, p.wgCurrentUsed, buf[:n])
 		p.pausedCond.L.Unlock()
 	}
 }