(Swift 3,4,5...) 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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func chilkatTest() {
    let rest = CkoRest()!
    var success: Bool

    // URL: http://www.mnb.hu/arfolyamok.asmx
    var bTls: Bool = false
    var port: Int = 80
    var bAutoReconnect: Bool = true
    success = rest.connect("www.mnb.hu", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("ConnectFailReason: \(rest.connectFailReason.intValue)")
        print("\(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.
    // --------------------------------------------------------------------------------

    let xml = CkoXml()!
    xml.tag = "soapenv:Envelope"
    xml.addAttribute("xmlns:soapenv", value: "http://schemas.xmlsoap.org/soap/envelope/")
    xml.addAttribute("xmlns:web", value: "http://www.mnb.hu/webservices/")
    xml.updateChildContent("soapenv:Header", value: "")
    xml.updateChildContent("soapenv:Body|web:GetCurrencies", value: "")

    rest.addHeader("Content-Type", value: "text/xml")
    rest.addHeader("SOAPAction", value: "/webservices/MNBArfolyamServiceSoap/GetCurrencies")
    rest.addHeader("Accept", value: "application/xml")

    let sbRequestBody = CkoStringBuilder()!
    xml.getSb(sbRequestBody)
    let sbResponseBody = CkoStringBuilder()!
    success = rest.fullRequestSb("POST", uriPath: "/arfolyamok.asmx", requestBody: sbRequestBody, responseBody: sbResponseBody)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    var respStatusCode: Int = rest.responseStatusCode.intValue
    if respStatusCode >= 400 {
        print("Response Status Code = \(respStatusCode)")
        print("Response Header:")
        print("\(rest.responseHeader!)")
        print("Response Body:")
        print("\(sbResponseBody.getAsString()!)")
        return
    }

    print("response status code = \(respStatusCode)")

    let xmlResponse = CkoXml()!
    xmlResponse.loadSb(sbResponseBody, autoTrim: true)
    print("\(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
    var resultEncoded: String? = xmlResponse.getChildContent("s:Body|GetCurrenciesResponse|GetCurrenciesResult")
    print("\(resultEncoded!)")

    // Entity decode the result to get XML.
    let sbResult = CkoStringBuilder()!
    sbResult.append(resultEncoded)
    sbResult.entityDecode()

    // Load it into XML.
    let xmlResult = CkoXml()!
    xmlResult.loadSb(sbResult, autoTrim: true)
    print("\(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>
    // 

}