HTTP POST Request with Basic Authentication using NSURLSession in Swift

basic-auth.swift

// Other sources: http://swiftdeveloperblog.com/send-http-post-request-example-using-swift-and-php/
 
// Create request
let baseUrl = "http://www.ocrwebservice.com/restservices/processDocument",
    params = "?language=english&gettext=true&outputformat=txt",
    requestUrl = NSURL(string: "\(baseUrl)\(params)"),
    request = NSMutableURLRequest(URL:requestUrl!)
request.HTTPMethod = "POST";
request.HTTPBodyStream = NSInputStream(fileAtPath: "[/YOUR/FILE/PATH/IMAGE.jpg]")
 
// Create session configuration (for authentication)
let config = NSURLSessionConfiguration.defaultSessionConfiguration(),
    userPasswordString = "[USERNAME]:[PASSWORD]",
    userPasswordData = userPasswordString.dataUsingEncoding(NSUTF8StringEncoding),
    base64EncodedCredential = userPasswordData!.base64EncodedStringWithOptions(nil),
    authString = "Basic \(base64EncodedCredential)"
config.HTTPAdditionalHeaders = ["Authorization" : authString]
 
// Create session
let session = NSURLSession(configuration: config)
 
// Set up task for execution
let task = session.dataTaskWithRequest(request) {
    data, response, error in
    
    if error != nil
    {
        println("error=\(error)")
        return
    }
    
    let dataString = NSString(data: data, encoding: NSUTF8StringEncoding)
    
    println("response = \(response)")
    println("dataString = \(dataString)")
    
    //Convert response sent from a server side script to a NSDictionary object:
    var err: NSError?
    var myJSON = NSJSONSerialization.JSONObjectWithData(data, options: .MutableLeaves, error:&err) as? NSDictionary
    
    if let parseJSON = myJSON {
        // Now we can access values of the data object by their keys
        var availPages = parseJSON["AvailablePages"] as? Int
        var OCRText = (parseJSON["OCRText"] as? NSArray)
        println("Available Pages: \(availPages!)")
        println("OCRText: \(OCRText!)")
    }
}
 
task.resume()