Sending video on server by multipart form data - ios

Question

I have a problem with pushing video on the server. My API has two parameters in body: details and file and I must authorize it by token in header.
At the beginning my file was prepared and exported to the URL that I am pushing to method. Next with details (string value) I am trying to prepare it to send on the server.
After I run my app I have got this error:
Error Domain=NSCocoaErrorDomain Code=3840 "No value." UserInfo={NSDebugDescription=No value.}
Server in respond returns all data about pushed video in JSON
I used this tutorial to try make some first step:
https://mindfiremobile.wordpress.com/2014/01/27/upload-video-to-server-using-multiparts/
It my first steps with pushing video on the server and I will be glad for help.
func postDetailsWithVideo(details: String, file: NSURL) {
let url = serverURL.URLByAppendingPathComponent("api/details")
let videoData = NSData.init(contentsOfURL: file)
let kBoundary = "---------------------------14737809831466499882746641449"
let kStartTag = "--%#\r\n"
let kEndTag = "\r\n"
let kContent = "Content-Disposition: form-data; name=\"%#\"\r\n\r\n"
let body = NSMutableData()
//details data
body.appendData(String(format: kStartTag, kBoundary).dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(String(format: kContent, "storyDetails").dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(details.dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(String(format: kEndTag).dataUsingEncoding(NSUTF8StringEncoding)!)
//Video data
body.appendData(String(format: kStartTag, kBoundary).dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Disposition: form-data; file=\"flv\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: application/octet-stream\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(NSData(data: videoData!))
body.appendData(String(format: kEndTag).dataUsingEncoding(NSUTF8StringEncoding)!)
// close form
body.appendData("--\(kBoundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
let contentType = "multipart/form-data; boundary=\(kBoundary)"
let request = NSMutableURLRequest(URL: url)
request.HTTPMethod = "POST"
request.setValue("Bearer \(DataManager().getAccessToken())", forHTTPHeaderField: "Authorization")
request.setValue(contentType, forHTTPHeaderField: "Content-Type")
request.HTTPBody = body
print(body)
postDataOnTheServer(request, apiMethod: "api/details")
}
func postDataOnTheServer(request: NSMutableURLRequest, apiMethod: NSString) {
let currentRequest = request
let task = NSURLSession.sharedSession().dataTaskWithRequest(currentRequest){ data, response, error in
if error != nil{
self.delegate?.errorOccured(apiMethod, error: error!)
return
}
do {
let result = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? [String:AnyObject]
self.delegate?.serverResponseFromAPIMethod(apiMethod, result: result!)
} catch {
print("response - some error")
print(error) //do something with me
}
}
task.resume()
}

Answer 1

Its a server issue.Ask your backend not to echo anything and you will get the response.