loop: handle fast-flag in legacy loop-in

Author: hieblmi

client.go

@@ -843,6 +843,7 @@ func (s *Client) LoopInQuote(ctx context.Context,
 	quote, err := s.Server.GetLoopInQuote(
 		ctx, request.Amount, s.lndServices.NodePubkey, request.LastHop,
 		request.RouteHints, request.Initiator, request.NumDeposits,
+		request.Fast,
 	)
 	if err != nil {
 		return nil, err

loopin.go

@@ -130,9 +130,11 @@ func newLoopInSwap(globalCtx context.Context, cfg *swapConfig,
 	// channels is an LND side black box feature. Advanced users will quote
 	// directly anyway and there they have the option to add specific route
 	// hints.
+	numDeposits := uint32(0)
+	fast := false
 	quote, err := cfg.server.GetLoopInQuote(
 		globalCtx, request.Amount, cfg.lnd.NodePubkey, request.LastHop,
-		request.RouteHints, request.Initiator, 0,
+		request.RouteHints, request.Initiator, numDeposits, fast,
 	)
 	if err != nil {
 		return nil, wrapGrpcError("loop in terms", err)

server_mock_test.go

@@ -226,7 +226,7 @@ func (s *serverMock) GetLoopInTerms(ctx context.Context, initiator string) (
 
 func (s *serverMock) GetLoopInQuote(context.Context, btcutil.Amount,
 	route.Vertex, *route.Vertex, [][]zpay32.HopHint, string,
-	uint32) (*LoopInQuote, error) {
+	uint32, bool) (*LoopInQuote, error) {
 
 	return &LoopInQuote{
 		SwapFee:   testSwapFee,

swap_server_client.go

@@ -82,7 +82,8 @@ type swapServerClient interface {
 	GetLoopInQuote(ctx context.Context, amt btcutil.Amount,
 		pubKey route.Vertex, lastHop *route.Vertex,
 		routeHints [][]zpay32.HopHint,
-		initiator string, numDeposits uint32) (*LoopInQuote, error)
+		initiator string, numDeposits uint32,
+		fast bool) (*LoopInQuote, error)
 
 	Probe(ctx context.Context, amt btcutil.Amount, target route.Vertex,
 		lastHop *route.Vertex, routeHints [][]zpay32.HopHint) error
@@ -269,7 +270,7 @@ func (s *grpcSwapServerClient) GetLoopInTerms(ctx context.Context,
 func (s *grpcSwapServerClient) GetLoopInQuote(ctx context.Context,
 	amt btcutil.Amount, pubKey route.Vertex, lastHop *route.Vertex,
 	routeHints [][]zpay32.HopHint, initiator string,
-	numDeposits uint32) (*LoopInQuote, error) {
+	numDeposits uint32, fast bool) (*LoopInQuote, error) {
 
 	err := s.Probe(ctx, amt, pubKey, lastHop, routeHints)
 	if err != nil && status.Code(err) != codes.Unavailable {
@@ -285,6 +286,7 @@ func (s *grpcSwapServerClient) GetLoopInQuote(ctx context.Context,
 		Pubkey:                   pubKey[:],
 		UserAgent:                UserAgent(initiator),
 		NumStaticAddressDeposits: numDeposits,
+		Fast:                     fast,
 	}
 
 	if lastHop != nil {