Files
gocryptotrader/exchanges/localbitcoins/localbitcoins_wrapper.go
Ryan O'Hara-Reid e4d487e586 exchanges: Change wrapper function FetchTradablePairs to return currency.Pairs (#1093)
* exchanges: FetchTradablePairs currency pair slice return (1)

* exchanges: finish conversion

* thrasher: nits + linter

* exchanges: shift var dec into for loop

* exchanges: Apply changes thanks @thrasher-

* Update exchanges/alphapoint/alphapoint_wrapper.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* thrasher: nitters

* Update exchanges/bitflyer/bitflyer_wrapper.go

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

* thrasher: fix more nitters

Co-authored-by: Ryan O'Hara-Reid <ryan.oharareid@thrasher.io>
Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>
2022-12-09 15:40:34 +11:00

710 lines
21 KiB
Go

package localbitcoins
import (
"context"
"errors"
"fmt"
"math"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/thrasher-corp/gocryptotrader/common"
"github.com/thrasher-corp/gocryptotrader/config"
"github.com/thrasher-corp/gocryptotrader/currency"
exchange "github.com/thrasher-corp/gocryptotrader/exchanges"
"github.com/thrasher-corp/gocryptotrader/exchanges/account"
"github.com/thrasher-corp/gocryptotrader/exchanges/asset"
"github.com/thrasher-corp/gocryptotrader/exchanges/deposit"
"github.com/thrasher-corp/gocryptotrader/exchanges/kline"
"github.com/thrasher-corp/gocryptotrader/exchanges/order"
"github.com/thrasher-corp/gocryptotrader/exchanges/orderbook"
"github.com/thrasher-corp/gocryptotrader/exchanges/protocol"
"github.com/thrasher-corp/gocryptotrader/exchanges/request"
"github.com/thrasher-corp/gocryptotrader/exchanges/ticker"
"github.com/thrasher-corp/gocryptotrader/exchanges/trade"
"github.com/thrasher-corp/gocryptotrader/log"
"github.com/thrasher-corp/gocryptotrader/portfolio/withdraw"
)
// GetDefaultConfig returns a default exchange config
func (l *LocalBitcoins) GetDefaultConfig() (*config.Exchange, error) {
l.SetDefaults()
exchCfg := new(config.Exchange)
exchCfg.Name = l.Name
exchCfg.HTTPTimeout = exchange.DefaultHTTPTimeout
exchCfg.BaseCurrencies = l.BaseCurrencies
err := l.SetupDefaults(exchCfg)
if err != nil {
return nil, err
}
if l.Features.Supports.RESTCapabilities.AutoPairUpdates {
err = l.UpdateTradablePairs(context.TODO(), true)
if err != nil {
return nil, err
}
}
return exchCfg, nil
}
// SetDefaults sets the package defaults for localbitcoins
func (l *LocalBitcoins) SetDefaults() {
l.Name = "LocalBitcoins"
l.Enabled = true
l.Verbose = true
l.API.CredentialsValidator.RequiresKey = true
l.API.CredentialsValidator.RequiresSecret = true
requestFmt := &currency.PairFormat{Uppercase: true}
configFmt := &currency.PairFormat{
Uppercase: true,
Delimiter: currency.DashDelimiter}
err := l.SetGlobalPairsManager(requestFmt, configFmt, asset.Spot)
if err != nil {
log.Errorln(log.ExchangeSys, err)
}
l.Features = exchange.Features{
Supports: exchange.FeaturesSupported{
REST: true,
Websocket: false,
RESTCapabilities: protocol.Features{
TickerBatching: true,
TickerFetching: true,
AutoPairUpdates: true,
AccountInfo: true,
GetOrder: true,
CancelOrder: true,
SubmitOrder: true,
DepositHistory: true,
WithdrawalHistory: true,
UserTradeHistory: true,
CryptoDeposit: true,
CryptoWithdrawal: true,
},
WithdrawPermissions: exchange.AutoWithdrawCrypto |
exchange.WithdrawFiatViaWebsiteOnly,
},
Enabled: exchange.FeaturesEnabled{
AutoPairUpdates: true,
},
}
l.Requester, err = request.New(l.Name,
common.NewHTTPClientWithTimeout(exchange.DefaultHTTPTimeout))
if err != nil {
log.Errorln(log.ExchangeSys, err)
}
l.API.Endpoints = l.NewEndpoints()
err = l.API.Endpoints.SetDefaultEndpoints(map[exchange.URL]string{
exchange.RestSpot: localbitcoinsAPIURL,
})
if err != nil {
log.Errorln(log.ExchangeSys, err)
}
}
// Setup sets exchange configuration parameters
func (l *LocalBitcoins) Setup(exch *config.Exchange) error {
if err := exch.Validate(); err != nil {
return err
}
if !exch.Enabled {
l.SetEnabled(false)
return nil
}
return l.SetupDefaults(exch)
}
// Start starts the LocalBitcoins go routine
func (l *LocalBitcoins) Start(wg *sync.WaitGroup) error {
if wg == nil {
return fmt.Errorf("%T %w", wg, common.ErrNilPointer)
}
wg.Add(1)
go func() {
l.Run()
wg.Done()
}()
return nil
}
// Run implements the LocalBitcoins wrapper
func (l *LocalBitcoins) Run() {
if l.Verbose {
l.PrintEnabledPairs()
}
if !l.GetEnabledFeatures().AutoPairUpdates {
return
}
err := l.UpdateTradablePairs(context.TODO(), false)
if err != nil {
log.Errorf(log.ExchangeSys, "%s failed to update tradable pairs. Err: %s", l.Name, err)
}
}
// FetchTradablePairs returns a list of the exchanges tradable pairs
func (l *LocalBitcoins) FetchTradablePairs(ctx context.Context, a asset.Item) (currency.Pairs, error) {
currencies, err := l.GetTradableCurrencies(ctx)
if err != nil {
return nil, err
}
pairs := make([]currency.Pair, len(currencies))
for x := range currencies {
var pair currency.Pair
pair, err = currency.NewPairFromStrings("BTC", currencies[x])
if err != nil {
return nil, err
}
pairs[x] = pair
}
return pairs, nil
}
// UpdateTradablePairs updates the exchanges available pairs and stores
// them in the exchanges config
func (l *LocalBitcoins) UpdateTradablePairs(ctx context.Context, forceUpdate bool) error {
pairs, err := l.FetchTradablePairs(ctx, asset.Spot)
if err != nil {
return err
}
return l.UpdatePairs(pairs, asset.Spot, false, forceUpdate)
}
// UpdateTickers updates the ticker for all currency pairs of a given asset type
func (l *LocalBitcoins) UpdateTickers(ctx context.Context, a asset.Item) error {
tick, err := l.GetTicker(ctx)
if err != nil {
return err
}
pairs, err := l.GetEnabledPairs(a)
if err != nil {
return err
}
for i := range pairs {
curr := pairs[i].Quote.String()
if _, ok := tick[curr]; !ok {
continue
}
var tp ticker.Price
tp.Pair = pairs[i]
tp.Last = tick[curr].Avg24h
tp.Volume = tick[curr].VolumeBTC
tp.ExchangeName = l.Name
tp.AssetType = a
err = ticker.ProcessTicker(&tp)
if err != nil {
return err
}
}
return nil
}
// UpdateTicker updates and returns the ticker for a currency pair
func (l *LocalBitcoins) UpdateTicker(ctx context.Context, p currency.Pair, a asset.Item) (*ticker.Price, error) {
if err := l.UpdateTickers(ctx, a); err != nil {
return nil, err
}
return ticker.GetTicker(l.Name, p, a)
}
// FetchTicker returns the ticker for a currency pair
func (l *LocalBitcoins) FetchTicker(ctx context.Context, p currency.Pair, assetType asset.Item) (*ticker.Price, error) {
tickerNew, err := ticker.GetTicker(l.Name, p, assetType)
if err != nil {
return l.UpdateTicker(ctx, p, assetType)
}
return tickerNew, nil
}
// FetchOrderbook returns orderbook base on the currency pair
func (l *LocalBitcoins) FetchOrderbook(ctx context.Context, p currency.Pair, assetType asset.Item) (*orderbook.Base, error) {
ob, err := orderbook.Get(l.Name, p, assetType)
if err != nil {
return l.UpdateOrderbook(ctx, p, assetType)
}
return ob, nil
}
// UpdateOrderbook updates and returns the orderbook for a currency pair
func (l *LocalBitcoins) UpdateOrderbook(ctx context.Context, p currency.Pair, assetType asset.Item) (*orderbook.Base, error) {
book := &orderbook.Base{
Exchange: l.Name,
Pair: p,
Asset: assetType,
VerifyOrderbook: l.CanVerifyOrderbook,
}
orderbookNew, err := l.GetOrderbook(ctx, p.Quote.String())
if err != nil {
return book, err
}
book.Bids = make(orderbook.Items, len(orderbookNew.Bids))
for x := range orderbookNew.Bids {
if orderbookNew.Bids[x].Price == 0 {
return book, errors.New("orderbook bid price is 0")
}
book.Bids[x] = orderbook.Item{
Amount: orderbookNew.Bids[x].Amount / orderbookNew.Bids[x].Price,
Price: orderbookNew.Bids[x].Price,
}
}
book.Asks = make(orderbook.Items, len(orderbookNew.Asks))
for x := range orderbookNew.Asks {
if orderbookNew.Asks[x].Price == 0 {
return book, errors.New("orderbook ask price is 0")
}
book.Asks[x] = orderbook.Item{
Amount: orderbookNew.Asks[x].Amount / orderbookNew.Asks[x].Price,
Price: orderbookNew.Asks[x].Price,
}
}
book.PriceDuplication = true
err = book.Process()
if err != nil {
return book, err
}
return orderbook.Get(l.Name, p, assetType)
}
// UpdateAccountInfo retrieves balances for all enabled currencies for the
// LocalBitcoins exchange
func (l *LocalBitcoins) UpdateAccountInfo(ctx context.Context, assetType asset.Item) (account.Holdings, error) {
var response account.Holdings
response.Exchange = l.Name
accountBalance, err := l.GetWalletBalance(ctx)
if err != nil {
return response, err
}
response.Accounts = append(response.Accounts, account.SubAccount{
AssetType: assetType,
Currencies: []account.Balance{
{
CurrencyName: currency.BTC,
Total: accountBalance.Total.Balance,
Hold: accountBalance.Total.Balance - accountBalance.Total.Sendable,
Free: accountBalance.Total.Sendable,
}},
})
creds, err := l.GetCredentials(ctx)
if err != nil {
return account.Holdings{}, err
}
err = account.Process(&response, creds)
if err != nil {
return account.Holdings{}, err
}
return response, nil
}
// FetchAccountInfo retrieves balances for all enabled currencies
func (l *LocalBitcoins) FetchAccountInfo(ctx context.Context, assetType asset.Item) (account.Holdings, error) {
creds, err := l.GetCredentials(ctx)
if err != nil {
return account.Holdings{}, err
}
acc, err := account.GetHoldings(l.Name, creds, assetType)
if err != nil {
return l.UpdateAccountInfo(ctx, assetType)
}
return acc, nil
}
// GetFundingHistory returns funding history, deposits and
// withdrawals
func (l *LocalBitcoins) GetFundingHistory(ctx context.Context) ([]exchange.FundHistory, error) {
return nil, common.ErrFunctionNotSupported
}
// GetWithdrawalsHistory returns previous withdrawals data
func (l *LocalBitcoins) GetWithdrawalsHistory(ctx context.Context, c currency.Code, a asset.Item) (resp []exchange.WithdrawalHistory, err error) {
return nil, common.ErrNotYetImplemented
}
// GetRecentTrades returns the most recent trades for a currency and asset
func (l *LocalBitcoins) GetRecentTrades(ctx context.Context, p currency.Pair, assetType asset.Item) ([]trade.Data, error) {
var err error
p, err = l.FormatExchangeCurrency(p, assetType)
if err != nil {
return nil, err
}
var tradeData []Trade
tradeData, err = l.GetTrades(ctx, p.Quote.String(), nil)
if err != nil {
return nil, err
}
resp := make([]trade.Data, len(tradeData))
for i := range tradeData {
resp[i] = trade.Data{
Exchange: l.Name,
TID: strconv.FormatInt(tradeData[i].TID, 10),
CurrencyPair: p,
AssetType: assetType,
Price: tradeData[i].Price,
Amount: tradeData[i].Amount,
Timestamp: time.Unix(tradeData[i].Date, 0),
}
}
err = l.AddTradesToBuffer(resp...)
if err != nil {
return nil, err
}
sort.Sort(trade.ByDate(resp))
return resp, nil
}
// GetHistoricTrades returns historic trade data within the timeframe provided
func (l *LocalBitcoins) GetHistoricTrades(_ context.Context, _ currency.Pair, _ asset.Item, _, _ time.Time) ([]trade.Data, error) {
return nil, common.ErrFunctionNotSupported
}
// SubmitOrder submits a new order
func (l *LocalBitcoins) SubmitOrder(ctx context.Context, s *order.Submit) (*order.SubmitResponse, error) {
if err := s.Validate(); err != nil {
return nil, err
}
fPair, err := l.FormatExchangeCurrency(s.Pair, s.AssetType)
if err != nil {
return nil, err
}
// These are placeholder details
// TODO store a user's localbitcoin details to use here
var params = AdCreate{
PriceEquation: "USD_in_AUD",
Latitude: 1,
Longitude: 1,
City: "City",
Location: "Location",
CountryCode: "US",
Currency: fPair.Quote.String(),
AccountInfo: "-",
BankName: "Bank",
MSG: s.Side.String(),
SMSVerficationRequired: true,
TrackMaxAmount: true,
RequireTrustedByAdvertiser: true,
RequireIdentification: true,
OnlineProvider: "",
TradeType: "",
MinAmount: int(math.Round(s.Amount)),
}
// Does not return any orderID, so create the add, then get the order
err = l.CreateAd(ctx, &params)
if err != nil {
return nil, err
}
// Now to figure out what ad we just submitted
// The only details we have are the params above
ads, err := l.Getads(ctx)
if err != nil {
return nil, err
}
var adID string
for i := range ads.AdList {
if ads.AdList[i].Data.PriceEquation == params.PriceEquation &&
ads.AdList[i].Data.Lat == float64(params.Latitude) &&
ads.AdList[i].Data.Lon == float64(params.Longitude) &&
ads.AdList[i].Data.City == params.City &&
ads.AdList[i].Data.Location == params.Location &&
ads.AdList[i].Data.CountryCode == params.CountryCode &&
ads.AdList[i].Data.Currency == params.Currency &&
ads.AdList[i].Data.AccountInfo == params.AccountInfo &&
ads.AdList[i].Data.BankName == params.BankName &&
ads.AdList[i].Data.SMSVerficationRequired == params.SMSVerficationRequired &&
ads.AdList[i].Data.TrackMaxAmount == params.TrackMaxAmount &&
ads.AdList[i].Data.RequireTrustedByAdvertiser == params.RequireTrustedByAdvertiser &&
ads.AdList[i].Data.OnlineProvider == params.OnlineProvider &&
ads.AdList[i].Data.TradeType == params.TradeType &&
ads.AdList[i].Data.MinAmount == strconv.FormatInt(int64(params.MinAmount), 10) {
adID = strconv.FormatInt(ads.AdList[i].Data.AdID, 10)
break
}
}
if adID == "" {
return nil, errors.New("ad placed, but not found via API")
}
return s.DeriveSubmitResponse(adID)
}
// ModifyOrder will allow of changing orderbook placement and limit to
// market conversion
func (l *LocalBitcoins) ModifyOrder(_ context.Context, _ *order.Modify) (*order.ModifyResponse, error) {
return nil, common.ErrFunctionNotSupported
}
// CancelOrder cancels an order by its corresponding ID number
func (l *LocalBitcoins) CancelOrder(ctx context.Context, o *order.Cancel) error {
if err := o.Validate(o.StandardCancel()); err != nil {
return err
}
return l.DeleteAd(ctx, o.OrderID)
}
// CancelBatchOrders cancels an orders by their corresponding ID numbers
func (l *LocalBitcoins) CancelBatchOrders(ctx context.Context, o []order.Cancel) (order.CancelBatchResponse, error) {
return order.CancelBatchResponse{}, common.ErrNotYetImplemented
}
// CancelAllOrders cancels all orders associated with a currency pair
func (l *LocalBitcoins) CancelAllOrders(ctx context.Context, _ *order.Cancel) (order.CancelAllResponse, error) {
cancelAllOrdersResponse := order.CancelAllResponse{
Status: make(map[string]string),
}
ads, err := l.Getads(ctx)
if err != nil {
return cancelAllOrdersResponse, err
}
for i := range ads.AdList {
adIDString := strconv.FormatInt(ads.AdList[i].Data.AdID, 10)
err = l.DeleteAd(ctx, adIDString)
if err != nil {
cancelAllOrdersResponse.Status[adIDString] = err.Error()
}
}
return cancelAllOrdersResponse, nil
}
// GetOrderInfo returns order information based on order ID
func (l *LocalBitcoins) GetOrderInfo(ctx context.Context, orderID string, pair currency.Pair, assetType asset.Item) (order.Detail, error) {
var orderDetail order.Detail
return orderDetail, common.ErrNotYetImplemented
}
// GetDepositAddress returns a deposit address for a specified currency
func (l *LocalBitcoins) GetDepositAddress(ctx context.Context, cryptocurrency currency.Code, _, _ string) (*deposit.Address, error) {
if !strings.EqualFold(currency.BTC.String(), cryptocurrency.String()) {
return nil, fmt.Errorf("%s does not have support for currency %s, it only supports bitcoin",
l.Name, cryptocurrency)
}
depositAddr, err := l.GetWalletAddress(ctx)
if err != nil {
return nil, err
}
return &deposit.Address{Address: depositAddr}, nil
}
// WithdrawCryptocurrencyFunds returns a withdrawal ID when a withdrawal is
// submitted
func (l *LocalBitcoins) WithdrawCryptocurrencyFunds(ctx context.Context, withdrawRequest *withdraw.Request) (*withdraw.ExchangeResponse, error) {
if err := withdrawRequest.Validate(); err != nil {
return nil, err
}
err := l.WalletSend(ctx,
withdrawRequest.Crypto.Address,
withdrawRequest.Amount,
withdrawRequest.PIN)
if err != nil {
return nil, err
}
return &withdraw.ExchangeResponse{}, nil
}
// WithdrawFiatFunds returns a withdrawal ID when a
// withdrawal is submitted
func (l *LocalBitcoins) WithdrawFiatFunds(_ context.Context, _ *withdraw.Request) (*withdraw.ExchangeResponse, error) {
return nil, common.ErrFunctionNotSupported
}
// WithdrawFiatFundsToInternationalBank returns a withdrawal ID when a
// withdrawal is submitted
func (l *LocalBitcoins) WithdrawFiatFundsToInternationalBank(_ context.Context, _ *withdraw.Request) (*withdraw.ExchangeResponse, error) {
return nil, common.ErrFunctionNotSupported
}
// GetFeeByType returns an estimate of fee based on type of transaction
func (l *LocalBitcoins) GetFeeByType(ctx context.Context, feeBuilder *exchange.FeeBuilder) (float64, error) {
if feeBuilder == nil {
return 0, fmt.Errorf("%T %w", feeBuilder, common.ErrNilPointer)
}
if (!l.AreCredentialsValid(ctx) || l.SkipAuthCheck) && // Todo check connection status
feeBuilder.FeeType == exchange.CryptocurrencyTradeFee {
feeBuilder.FeeType = exchange.OfflineTradeFee
}
return l.GetFee(feeBuilder)
}
// GetActiveOrders retrieves any orders that are active/open
func (l *LocalBitcoins) GetActiveOrders(ctx context.Context, getOrdersRequest *order.GetOrdersRequest) (order.FilteredOrders, error) {
err := getOrdersRequest.Validate()
if err != nil {
return nil, err
}
resp, err := l.GetDashboardInfo(ctx)
if err != nil {
return nil, err
}
format, err := l.GetPairFormat(asset.Spot, false)
if err != nil {
return nil, err
}
orders := make([]order.Detail, len(resp))
for i := range resp {
var orderDate time.Time
orderDate, err = time.Parse(time.RFC3339, resp[i].Data.CreatedAt)
if err != nil {
log.Errorf(log.ExchangeSys, "Exchange %v Func %v Order %v Could not parse date to unix with value of %v",
l.Name,
"GetActiveOrders",
resp[i].Data.Advertisement.ID,
resp[i].Data.CreatedAt)
}
side := order.Buy
if resp[i].Data.IsSelling {
side = order.Sell
}
orders[i] = order.Detail{
Amount: resp[i].Data.AmountBTC,
Price: resp[i].Data.Amount,
OrderID: strconv.FormatInt(resp[i].Data.Advertisement.ID, 10),
Date: orderDate,
Fee: resp[i].Data.FeeBTC,
Side: side,
Pair: currency.NewPairWithDelimiter(currency.BTC.String(),
resp[i].Data.Currency,
format.Delimiter),
Exchange: l.Name,
}
}
return getOrdersRequest.Filter(l.Name, orders), nil
}
// GetOrderHistory retrieves account order information
// Can Limit response to specific order status
func (l *LocalBitcoins) GetOrderHistory(ctx context.Context, getOrdersRequest *order.GetOrdersRequest) (order.FilteredOrders, error) {
err := getOrdersRequest.Validate()
if err != nil {
return nil, err
}
var allTrades []DashBoardInfo
resp, err := l.GetDashboardCancelledTrades(ctx)
if err != nil {
return nil, err
}
allTrades = append(allTrades, resp...)
resp, err = l.GetDashboardClosedTrades(ctx)
if err != nil {
return nil, err
}
allTrades = append(allTrades, resp...)
resp, err = l.GetDashboardReleasedTrades(ctx)
if err != nil {
return nil, err
}
allTrades = append(allTrades, resp...)
format, err := l.GetPairFormat(asset.Spot, false)
if err != nil {
return nil, err
}
orders := make([]order.Detail, len(allTrades))
for i := range allTrades {
var orderDate time.Time
orderDate, err = time.Parse(time.RFC3339, allTrades[i].Data.CreatedAt)
if err != nil {
log.Errorf(log.ExchangeSys,
"Exchange %v Func %v Order %v Could not parse date to unix with value of %v",
l.Name,
"GetActiveOrders",
allTrades[i].Data.Advertisement.ID,
allTrades[i].Data.CreatedAt)
}
var side order.Side
if allTrades[i].Data.IsBuying {
side = order.Buy
} else if allTrades[i].Data.IsSelling {
side = order.Sell
}
status := ""
switch {
case allTrades[i].Data.ReleasedAt != "" &&
allTrades[i].Data.ReleasedAt != null:
status = "Released"
case allTrades[i].Data.CanceledAt != "" &&
allTrades[i].Data.CanceledAt != null:
status = "Cancelled"
case allTrades[i].Data.ClosedAt != "" &&
allTrades[i].Data.ClosedAt != null:
status = "Closed"
}
var orderStatus order.Status
orderStatus, err = order.StringToOrderStatus(status)
if err != nil {
log.Errorf(log.ExchangeSys, "%s %v", l.Name, err)
}
orders[i] = order.Detail{
Amount: allTrades[i].Data.AmountBTC,
Price: allTrades[i].Data.Amount,
OrderID: strconv.FormatInt(allTrades[i].Data.Advertisement.ID, 10),
Date: orderDate,
Fee: allTrades[i].Data.FeeBTC,
Side: side,
Status: orderStatus,
Pair: currency.NewPairWithDelimiter(currency.BTC.String(),
allTrades[i].Data.Currency,
format.Delimiter),
Exchange: l.Name,
}
}
return getOrdersRequest.Filter(l.Name, orders), nil
}
// ValidateCredentials validates current credentials used for wrapper
// functionality
func (l *LocalBitcoins) ValidateCredentials(ctx context.Context, assetType asset.Item) error {
_, err := l.UpdateAccountInfo(ctx, assetType)
return l.CheckTransientError(err)
}
// GetHistoricCandles returns candles between a time period for a set time interval
func (l *LocalBitcoins) GetHistoricCandles(ctx context.Context, pair currency.Pair, a asset.Item, start, end time.Time, interval kline.Interval) (kline.Item, error) {
return kline.Item{}, common.ErrFunctionNotSupported
}
// GetHistoricCandlesExtended returns candles between a time period for a set time interval
func (l *LocalBitcoins) GetHistoricCandlesExtended(ctx context.Context, pair currency.Pair, a asset.Item, start, end time.Time, interval kline.Interval) (kline.Item, error) {
return kline.Item{}, common.ErrFunctionNotSupported
}