Download a Binary REST Response into BinData

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Demonstrates Rest.FullRequestNoBodyBd, which sends a request with no body and stores the binary response body in a BinData.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

func chilkatTest() {
    var success: Bool = false

    let rest = CkoRest()!
    var bTls: Bool = true
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "example.com", port: 443, tls: bTls, autoReconnect: bAutoReconnect)
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    //  The file paths are relative to the application's current working directory.  Absolute paths
    //  may also be used.  Supply the paths appropriate to your own environment.

    //  FullRequestNoBodyBd sends a request with no body and stores the binary response body in a
    //  BinData.  This is appropriate when the response is binary, such as an image or file download.
    let bdResponse = CkoBinData()!
    success = rest.fullRequestNoBodyBd(httpVerb: "GET", uriPath: "/api/images/1", binData: bdResponse)
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    var bSaved: Bool = bdResponse.writeFile(path: "qa_output/image.png")
    if bSaved != true {
        print("Failed to save the response body.")
        return
    }

    print("Downloaded \(bdResponse.numBytes.intValue) bytes.")

}