(Lianja) Magyar Nemzeti Bank (MNB) Get Currencies

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.

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loRest = createobject("CkRest")

// URL: http://www.mnb.hu/arfolyamok.asmx
llBTls = .F.
lnPort = 80
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.mnb.hu",lnPort,llBTls,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? "ConnectFailReason: " + str(loRest.ConnectFailReason)
    ? loRest.LastErrorText
    release loRest
    return
endif

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

loXml = createobject("CkXml")
loXml.Tag = "soapenv:Envelope"
loXml.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/")
loXml.AddAttribute("xmlns:web","http://www.mnb.hu/webservices/")
loXml.UpdateChildContent("soapenv:Header","")
loXml.UpdateChildContent("soapenv:Body|web:GetCurrencies","")

loRest.AddHeader("Content-Type","text/xml")
loRest.AddHeader("SOAPAction","/webservices/MNBArfolyamServiceSoap/GetCurrencies")
loRest.AddHeader("Accept","application/xml")

loSbRequestBody = createobject("CkStringBuilder")
loXml.GetXmlSb(loSbRequestBody)
loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestSb("POST","/arfolyamok.asmx",loSbRequestBody,loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loXml
    release loSbRequestBody
    release loSbResponseBody
    return
endif

lnRespStatusCode = loRest.ResponseStatusCode
if (lnRespStatusCode >= 400) then
    ? "Response Status Code = " + str(lnRespStatusCode)
    ? "Response Header:"
    ? loRest.ResponseHeader
    ? "Response Body:"
    ? loSbResponseBody.GetAsString()
    release loRest
    release loXml
    release loSbRequestBody
    release loSbResponseBody
    return
endif

? "response status code = " + str(lnRespStatusCode)

loXmlResponse = createobject("CkXml")
loXmlResponse.LoadSb(loSbResponseBody,.T.)
? loXmlResponse.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
lcResultEncoded = loXmlResponse.GetChildContent("s:Body|GetCurrenciesResponse|GetCurrenciesResult")
? lcResultEncoded

// Entity decode the result to get XML.
loSbResult = createobject("CkStringBuilder")
loSbResult.Append(lcResultEncoded)
loSbResult.EntityDecode()

// Load it into XML.
loXmlResult = createobject("CkXml")
loXmlResult.LoadSb(loSbResult,.T.)
? loXmlResult.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>
// 


release loRest
release loXml
release loSbRequestBody
release loSbResponseBody
release loXmlResponse
release loSbResult
release loXmlResult