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(DataFlex) 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.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoRest
    Boolean iSuccess
    Boolean iBTls
    Integer iPort
    Boolean iBAutoReconnect
    Handle hoXml
    Variant vSbRequestBody
    Handle hoSbRequestBody
    Variant vSbResponseBody
    Handle hoSbResponseBody
    Integer iRespStatusCode
    Handle hoXmlResponse
    String sResultEncoded
    Variant vSbResult
    Handle hoSbResult
Result    Handle hoXmlResult
    String sTemp1
    Integer iTemp1

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    //  URL: http://www.mnb.hu/arfolyamok.asmx
    Move False To iBTls
    Move 80 To iPort
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "www.mnb.hu" iPort iBTls iBAutoReconnect To iSuccess
    If (iSuccess <> True) Begin
        Get ComConnectFailReason Of hoRest To iTemp1
        Showln "ConnectFailReason: " iTemp1
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatXml)) To hoXml
    If (Not(IsComObjectCreated(hoXml))) Begin
        Send CreateComObject of hoXml
    End
    Set ComTag Of hoXml To "soapenv:Envelope"
    Get ComAddAttribute Of hoXml "xmlns:soapenv" "http://schemas.xmlsoap.org/soap/envelope/" To iSuccess
    Get ComAddAttribute Of hoXml "xmlns:web" "http://www.mnb.hu/webservices/" To iSuccess
    Send ComUpdateChildContent To hoXml "soapenv:Header" ""
    Send ComUpdateChildContent To hoXml "soapenv:Body|web:GetCurrencies" ""

    Get ComAddHeader Of hoRest "Content-Type" "text/xml" To iSuccess
    Get ComAddHeader Of hoRest "SOAPAction" "/webservices/MNBArfolyamServiceSoap/GetCurrencies" To iSuccess
    Get ComAddHeader Of hoRest "Accept" "application/xml" To iSuccess

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbRequestBody
    If (Not(IsComObjectCreated(hoSbRequestBody))) Begin
        Send CreateComObject of hoSbRequestBody
    End
    Get pvComObject of hoSbRequestBody to vSbRequestBody
    Get ComGetXmlSb Of hoXml vSbRequestBody To iSuccess
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbResponseBody
    If (Not(IsComObjectCreated(hoSbResponseBody))) Begin
        Send CreateComObject of hoSbResponseBody
    End
    Get pvComObject of hoSbRequestBody to vSbRequestBody
    Get pvComObject of hoSbResponseBody to vSbResponseBody
    Get ComFullRequestSb Of hoRest "POST" "/arfolyamok.asmx" vSbRequestBody vSbResponseBody To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComResponseStatusCode Of hoRest To iRespStatusCode
    If (iRespStatusCode >= 400) Begin
        Showln "Response Status Code = " iRespStatusCode
        Showln "Response Header:"
        Get ComResponseHeader Of hoRest To sTemp1
        Showln sTemp1
        Showln "Response Body:"
        Get ComGetAsString Of hoSbResponseBody To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "response status code = " iRespStatusCode

    Get Create (RefClass(cComChilkatXml)) To hoXmlResponse
    If (Not(IsComObjectCreated(hoXmlResponse))) Begin
        Send CreateComObject of hoXmlResponse
    End
    Get pvComObject of hoSbResponseBody to vSbResponseBody
    Get ComLoadSb Of hoXmlResponse vSbResponseBody True To iSuccess
    Get ComGetXml Of hoXmlResponse To sTemp1
    Showln sTemp1

    //  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
    Get ComGetChildContent Of hoXmlResponse "s:Body|GetCurrenciesResponse|GetCurrenciesResult" To sResultEncoded
    Showln sResultEncoded

    //  Entity decode the result to get XML.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbResult
    If (Not(IsComObjectCreated(hoSbResult))) Begin
        Send CreateComObject of hoSbResult
    End
    Get ComAppend Of hoSbResult sResultEncoded To iSuccess
    Get ComEntityDecode Of hoSbResult To iSuccess

    //  Load it into XML.
    Get Create (RefClass(cComChilkatXml)) To hoXmlResult
    If (Not(IsComObjectCreated(hoXmlResult))) Begin
        Send CreateComObject of hoXmlResult
    End
    Get pvComObject of hoSbResult to vSbResult
    Get ComLoadSb Of hoXmlResult vSbResult True To iSuccess
    Get ComGetXml Of hoXmlResult To sTemp1
    Showln sTemp1

    //  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>
    // 


End_Procedure

 

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