Swift 3 Alamofire multipart upload

For example, using Alamofire 4.0.0 in Swift 3:

(make sure you are 4.0.0 ready as it looks like you haven't updated your Alamofire yet)

Alamofire.upload(multipartFormData: { (multipartFormData) in        // code    }, to: URL, encodingCompletion: { (result) in        // code    })

or

Alamofire.upload(multipartFormData: { (multipartFormData) in        // code    }, with: URL, encodingCompletion: { (result) in        // code    })

So headers need to be passed by URL request:

let URL = try! URLRequest(url: "http://example.com", method: .get, headers: headers)

Try this one and url set as @pedrouan said.

Alamofire.upload(multipartFormData: { (multipartFormData) in       multipartFormData.append(imageData, withName: "xyz", fileName: "file.jpeg", mimeType: "image/jpeg")}, to: url) { (result) in      //result}

In swift 3, trying to set multipartFormData as @DCDC pointed out in his solution. XCode try to cast to AnyObject before .data(), so instead of

value.data(using: String.Encoding.utf8)!, withName: key

I did

[replace_your_var_name_here].data(using: String.Encoding.utf8)!, withName: key

In my case my var list was not big so hardcoding was an option.