Complete IP Fraud Prevention Guide

// Batch currency conversion example
const conversions = [
  { from: 'USD', to: 'EUR', amount: 100 },
  { from: 'GBP', to: 'JPY', amount: 500 },
  { from: 'CAD', to: 'AUD', amount: 250 }
];

const results = await Promise.all(
  conversions.map(async (conv) => {
    const response = await fetch(`https://currency-exchange.xyz/api/v1-convert-currency?from=${conv.from}&to=${conv.to}&amount=${conv.amount}`, {
      method: 'GET',
      headers: {
        'accept': 'application/json',
        'x-api-key': 'YOUR_API_KEY'
      }
    });
    return response.json();
  })
);

console.log(results);
// [
//   {
//     "from": "USD",
//     "to": "EUR",
//     "exchangeRate": 0.9250,
//     "convertedAmount": 92.50,
//     "convertedText": "100 USD equal to 92.50 EUR"
//   },
//   // ... more results
// ]

// Real-time rate monitoring
const checkRates = async () => {
  const response = await fetch(
    'https://currency-exchange.xyz/api/v1-convert-currency?from=EUR&to=USD&amount=1',
    {
      headers: {
        'accept': 'application/json',
        'x-api-key': 'YOUR_API_KEY'
      }
    }
  );

  const rates = await response.json();
  console.log(`Current EUR/USD rate: ${rates.exchangeRate}`);
  return rates;
};

async function convertCurrencyWithRetry(from, to, amount, maxRetries = 3) {
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      const response = await fetch(`https://currency-exchange.xyz/api/v1-convert-currency?from=${from}&to=${to}&amount=${amount}`, {
        method: 'GET',
        headers: {
          'accept': 'application/json',
          'x-api-key': 'YOUR_API_KEY'
        })
      });

      if (!response.ok) {
        if (response.status === 429) {
          // Rate limited - exponential backoff
          const delay = Math.pow(2, attempt) * 1000;
          await new Promise(resolve => setTimeout(resolve, delay));
          continue;
        }

        if (response.status >= 500) {
          // Server error - retry
          if (attempt < maxRetries) continue;
        }

        throw new Error(`HTTP ${response.status}: ${response.statusText}`);
      }

      const result = await response.json();

      // Handle different risk scores
      if (result.risk_score <= 30) {
        return { ...result, status: 'safe' };
      } else if (result.risk_score <= 70) {
        return { ...result, status: 'review' };
      } else {
        return { ...result, status: 'block' };
      }

    } catch (error) {
      console.error(`Attempt ${attempt} failed:`, error.message);

      if (attempt === maxRetries) {
        return {
          ip,
          valid: false,
          error: error.message,
          status: 'error'
        };
      }

      // Wait before retry
      await new Promise(resolve => setTimeout(resolve, 1000 * attempt));
    }
  }
}