(Swift 3,4,5...) Bitfinex v2 REST Submit Order

Submit an order.

For more information, see https://docs.bitfinex.com/reference#rest-auth-submit-order

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let http = CkoHttp()!
    var success: Bool

    let crypt = CkoCrypt2()!

    var apiPath: String? = "v2/auth/w/order/submit"
    var apiKey: String? = "MY_API_KEY"
    var apiSecret: String? = "MY_API_SECRET"

    let dt = CkoDateTime()!
    dt.setFromCurrentSystemTime()

    let sbNonce = CkoStringBuilder()!
    sbNonce.append(dt.getAsUnixTimeStr(false))
    sbNonce.append("000")
    var nonce: String? = sbNonce.getAsString()

    let json = CkoJsonObject()!
    json.update("type", value: "LIMIT")
    json.update("symbol", value: "tBTCUSD")
    json.update("price", value: "15")
    json.update("amount", value: "0.001")
    json.updateInt("flags", value: 0)
    var body: String? = json.emit()

    let sbSignature = CkoStringBuilder()!
    sbSignature.append("/api/")
    sbSignature.append(apiPath)
    sbSignature.append(nonce)
    sbSignature.append(body)

    crypt.encodingMode = "hex_lower"
    crypt.hashAlgorithm = "sha384"
    crypt.macAlgorithm = "hmac"
    crypt.setMacKeyString(apiSecret)

    var sig: String? = crypt.macStringENC(sbSignature.getAsString())

    http.setRequestHeader("bfx-apikey", value: apiKey)
    http.setRequestHeader("bfx-signature", value: sig)
    http.setRequestHeader("bfx-nonce", value: nonce)

    var resp: CkoHttpResponse? = http.postJson2("https://api.bitfinex.com/v2/auth/w/order/submit", contentType: "application/json", jsonText: body)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    print("Response body:")
    print("\(resp!.bodyStr!)")

    resp = nil

}