React Native

Magyar Nemzeti Bank (MNB) Get Currencies

See more REST Misc Examples

The Magyar Nemzeti Bank (MNB) is the central bank of Hungary. In this role, its primary objective is to achieve and maintain price stability. The MNB website is available to visitors in both Hungarian and English. The MNB provides the Arfolyam (trans. Exchange Rate) API, which can be used to retrieve current and historic currency exchange rates. This service uses SOAP calls issued in XML format.

This example gets a list of currencies.

React Native

import { Rest, StringBuilder, Xml } from '@chilkat/react-native'

async function chilkatExample() {
  const rest = new Rest();

  // URL: http://www.mnb.hu/arfolyamok.asmx
  const bTls = false;
  const port = 80;
  const bAutoReconnect = true;
  try {
    await rest.connectAsync('www.mnb.hu', port, bTls, bAutoReconnect);
  } catch {
    console.log(`ConnectFailReason: ${rest.connectFailReason}`);
    console.log(rest.lastErrorText);
    return;
  }

  // --------------------------------------------------------------------------------
  // Also see Chilkat's Online WSDL Code Generator
  // to generate code and SOAP Request and Response XML for each operation in a WSDL.
  // --------------------------------------------------------------------------------

  const xml = new Xml();
  xml.tag = 'soapenv:Envelope';
  xml.addAttribute('xmlns:soapenv', 'http://schemas.xmlsoap.org/soap/envelope/');
  xml.addAttribute('xmlns:web', 'http://www.mnb.hu/webservices/');
  xml.updateChildContent('soapenv:Header', '');
  xml.updateChildContent('soapenv:Body|web:GetCurrencies', '');

  rest.addHeader('Content-Type', 'text/xml');
  rest.addHeader('SOAPAction', '/webservices/MNBArfolyamServiceSoap/GetCurrencies');
  rest.addHeader('Accept', 'application/xml');

  const sbRequestBody = new StringBuilder();
  xml.getXmlSb(sbRequestBody);
  const sbResponseBody = new StringBuilder();
  try {
    await rest.fullRequestSbAsync('POST', '/arfolyamok.asmx', sbRequestBody, sbResponseBody);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  const respStatusCode = rest.responseStatusCode;
  if (respStatusCode >= 400) {
    console.log(`Response Status Code = ${respStatusCode}`);
    console.log('Response Header:');
    console.log(rest.responseHeader);
    console.log('Response Body:');
    console.log(sbResponseBody.getAsString());
    return;
  }

  console.log(`response status code = ${respStatusCode}`);

  const xmlResponse = new Xml();
  xmlResponse.loadSb(sbResponseBody, true);
  console.log(xmlResponse.getXml());

  // The XML response contains this:
  // <?xml version="1.0" encoding="utf-8" ?>
  // <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
  //     <s:Body>
  //         <GetCurrenciesResponse xmlns="http://www.mnb.hu/webservices/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  //             <GetCurrenciesResult>&lt;MNBCurrencies&gt;&lt;Currencies&gt;&lt;Curr&gt;HUF&lt;/Curr&gt;&lt;Curr&gt;EUR&lt;/Curr&gt;&lt;Curr&gt;AUD&lt;/Curr&gt; ... &lt;/MNBCurrencies&gt;</GetCurrenciesResult>
  //         </GetCurrenciesResponse>
  //     </s:Body>
  // </s:Envelope>

  // Get the GetCurrenciesResult
  const resultEncoded = xmlResponse.getChildContent('s:Body|GetCurrenciesResponse|GetCurrenciesResult');
  console.log(resultEncoded);

  // Entity decode the result to get XML.
  const sbResult = new StringBuilder();
  sbResult.append(resultEncoded);
  sbResult.entityDecode();

  // Load it into XML.
  const xmlResult = new Xml();
  xmlResult.loadSb(sbResult, true);
  console.log(xmlResult.getXml());

  // The result is this:

  // <?xml version="1.0" encoding="utf-8" ?>
  // <MNBCurrencies>
  //     <Currencies>
  //         <Curr>HUF</Curr>
  //         <Curr>EUR</Curr>
  //         <Curr>AUD</Curr>
  //         <Curr>BGN</Curr>
  //         <Curr>BRL</Curr>
  //         <Curr>CAD</Curr>
  //         <Curr>CHF</Curr>
  //         <Curr>CNY</Curr>
  //         <Curr>CZK</Curr>
  //         <Curr>DKK</Curr>
  //         <Curr>GBP</Curr>
  //         <Curr>HKD</Curr>
  //         <Curr>HRK</Curr>
  //         <Curr>IDR</Curr>
  //         <Curr>ILS</Curr>
  //         <Curr>INR</Curr>
  //         <Curr>ISK</Curr>
  //         <Curr>JPY</Curr>
  //         <Curr>KRW</Curr>
  //         <Curr>MXN</Curr>
  //         <Curr>MYR</Curr>
  //         <Curr>NOK</Curr>
  //         <Curr>NZD</Curr>
  //         <Curr>PHP</Curr>
  //         <Curr>PLN</Curr>
  //         <Curr>RON</Curr>
  //         <Curr>RSD</Curr>
  //         <Curr>RUB</Curr>
  //         <Curr>SEK</Curr>
  //         <Curr>SGD</Curr>
  //         <Curr>THB</Curr>
  //         <Curr>TRY</Curr>
  //         <Curr>UAH</Curr>
  //         <Curr>USD</Curr>
  //         <Curr>ZAR</Curr>
  //         <Curr>ATS</Curr>
  //         <Curr>AUP</Curr>
  //         <Curr>BEF</Curr>
  //         <Curr>BGL</Curr>
  //         <Curr>CYN</Curr>
  //         <Curr>CSD</Curr>
  //         <Curr>CSK</Curr>
  //         <Curr>DDM</Curr>
  //         <Curr>DEM</Curr>
  //         <Curr>EEK</Curr>
  //         <Curr>EGP</Curr>
  //         <Curr>ESP</Curr>
  //         <Curr>FIM</Curr>
  //         <Curr>FRF</Curr>
  //         <Curr>GHP</Curr>
  //         <Curr>GRD</Curr>
  //         <Curr>IEP</Curr>
  //         <Curr>ITL</Curr>
  //         <Curr>KPW</Curr>
  //         <Curr>KWD</Curr>
  //         <Curr>LBP</Curr>
  //         <Curr>LTL</Curr>
  //         <Curr>LUF</Curr>
  //         <Curr>LVL</Curr>
  //         <Curr>MNT</Curr>
  //         <Curr>NLG</Curr>
  //         <Curr>OAL</Curr>
  //         <Curr>OBL</Curr>
  //         <Curr>OFR</Curr>
  //         <Curr>ORB</Curr>
  //         <Curr>PKR</Curr>
  //         <Curr>PTE</Curr>
  //         <Curr>ROL</Curr>
  //         <Curr>SDP</Curr>
  //         <Curr>SIT</Curr>
  //         <Curr>SKK</Curr>
  //         <Curr>SUR</Curr>
  //         <Curr>VND</Curr>
  //         <Curr>XEU</Curr>
  //         <Curr>XTR</Curr>
  //         <Curr>YUD</Curr>
  //     </Currencies>
  // </MNBCurrencies>
  // 
}