api: separate method for paych funding

node/impl/paych/paych.go

@@ -23,7 +23,19 @@ type PaychAPI struct {
 }
 
 func (a *PaychAPI) PaychGet(ctx context.Context, from, to address.Address, amt types.BigInt, opts api.PaychGetOpts) (*api.ChannelInfo, error) {
-	ch, mcid, err := a.PaychMgr.GetPaych(ctx, from, to, amt, opts)
+	ch, mcid, err := a.PaychMgr.GetPaych(ctx, from, to, amt, true, opts)
+	if err != nil {
+		return nil, err
+	}
+
+	return &api.ChannelInfo{
+		Channel:      ch,
+		WaitSentinel: mcid,
+	}, nil
+}
+
+func (a *PaychAPI) PaychFund(ctx context.Context, from, to address.Address, amt types.BigInt) (*api.ChannelInfo, error) {
+	ch, mcid, err := a.PaychMgr.GetPaych(ctx, from, to, amt, false, api.PaychGetOpts{OffChain: false})
 	if err != nil {
 		return nil, err
 	}
@@ -55,10 +67,7 @@ func (a *PaychAPI) PaychNewPayment(ctx context.Context, from, to address.Address
 
 	// TODO: Fix free fund tracking in PaychGet
 	// TODO: validate voucher spec before locking funds
-	ch, err := a.PaychGet(ctx, from, to, amount, api.PaychGetOpts{
-		Reserve:  true,
-		OffChain: false,
-	})
+	ch, err := a.PaychGet(ctx, from, to, amount, api.PaychGetOpts{OffChain: false})
 	if err != nil {
 		return nil, err
 	}