Send image to API - Swift 4 - swift

Question

I'm new in Swift,and have some problem with sending an image to api, from MacOS app. I try with lot of codes, this one is(as I think) most correct, but it doesn't work:
func mimeTypeForPath(path: String) -> String {
let url = NSURL(fileURLWithPath: path)
let pathExtension = url.pathExtension
if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension! as NSString, nil)?.takeRetainedValue() {
if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() {
return mimetype as String
}
}
return "application/octet-stream";
}
func sendScreenshoot(url: String){
let img = NSImage(byReferencingFile: home.path)
guard let uploadData = try? img?.tiffRepresentation else {
return
}
let mimetype = mimeTypeForPath(path: home.path)
print(mimetype)
let boundary = "Boundary-\(UUID().uuidString)"
print(boundary)
var request = URLRequest(url: URL(string: url)!)
request.httpMethod = "POST"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
var body = Data()
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"screenshot\"; filename=\"screenshot.png\"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.append(uploadData!)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
request.httpBody = body
URLSession.shared.dataTask(with: request, completionHandler: { (data, response, error) -> Void in
print(error)
}).resume()
}
What is the best way to send files(images) with swift 4 Mac OS(without Alamofire)?

Answer 1

Try below code
func myImageUploadReques(){
if let data:Data = UIImageJPEGRepresentation(img_Selected.image!, 0.5) {
let base64String = data.base64EncodedString(options: Data.Base64EncodingOptions(rawValue: 0))
print(base64String)
let strBase1 = base64String.replacingOccurrences(of: "+", with: "%2B", options: NSString.CompareOptions.literal, range: nil)
let str = strBase1.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
var params: [String:String] = [:]
params["action"] = "upload_file"
params["document_type"] = "image"
params["file"] = str
myRequest.SendRequestUrl(del: self as MyURLRequestDelegate, params: params , type: "upload_file")
LoadingOverlay.shared.showLoaderView(view: self.view)
}
}

Answer 2

I found the working solution.
func sendScreenshoot(url: String){
let img = try? Data(contentsOf: home)
let mimetype = mimeTypeForPath(path: home.path)
var request = URLRequest(url: URL(string: url)!)
request.httpMethod = "POST"
let boundary = "Boundary-\(NSUUID().uuidString)"
request.setValue("multipart/form-data; boundary=\(boundary)",
forHTTPHeaderField: "Content-Type")
let body = NSMutableData()
let fname = "screenshoot.png"
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data;name=\"photo\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("Incoming\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"file\";filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Type: \(mimetype)\r\n\r\n".data(using:
String.Encoding.utf8)!)
body.append(img!)
body.append("\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)--\r\n".data(using:
String.Encoding.utf8)!)
request.httpBody = body as Data
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest) {
(
data, response, error) in
}
task.resume()
}