Upload file to mailgun server with swift - swift

Question

I am trying to attach file to Mailgun. Here is my curl command:
curl -s --user 'api:key-XXX'
https://api.mailgun.net/v3/sandbox---.mailgun.org/messages
-F from='Excited User<mailgun#sandbox---.mailgun.org>'
-F to=mail#gmail.com
-F subject='Hello'
-F text='Testing some Mailgun awesomness!'
-F attachment='#/Users/.../mytestfile.jpeg'
Result: Ok, the file has been attached to the message and been successfully transferred.
After that, I tried doing it with URLRequest:
guard let filePath = Bundle.main.url(forResource: "domru", withExtension: "jpeg") else {
print(">>>can't find path")
return
}
let parameters: HTTPHeaders = [
"from": "Excited User<mailgun#sandbox---.mailgun.org>",
"to": "mail#gmail.com",
"subject": "hello",
"text": "my text message" ]
let data = encodeRequest(parameters: parameters, attachment: filePath)
var request = URLRequest(url: URL(string:"https://api.mailgun.net/v3/sandbox---.mailgun.org/messages")!)
request.httpMethod = "POST"
request.httpBody = data.data(using: .utf8)
request.addValue("Basic \(credentialData!)", forHTTPHeaderField: "Authorization")
let task = URLSession.shared.dataTask(with: request, completionHandler:{(data, response, error) in
if let err = error {
print(err)
}
if let response = response {
print("url = \(response.url!)")
print("response = \(response)")
let httpResponse = response as! HTTPURLResponse
print("response code = \(httpResponse.statusCode)")
}
})
task.resume()
private func encodeRequest(parameters:[String:String], attachment: URL) -> String {
var result = ""
for (key, value) in parameters {
result.append("\(key)="+"\(value)".addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)! + "&")
}
result.append("attachment="+attachment.path.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed)!)
return result
}
Result: The text of the message has been delivered, but the file has not been attached.
I also tried to solve that with Alamofire:
let imageData = UIImageJPEGRepresentation(UIImage(named:"domru.jpeg")!, 1)
let header : HTTPHeaders = ["Authorization":"Basic \(credentialData!)"]
Alamofire.upload(
// parameters are the same as in the previous part of code
multipartFormData: { (multipartFormData) in
for (key, value) in parameters {
multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: key)
}
multipartFormData.append(imageData!, withName: "domru", fileName: "domru.jpeg", mimeType: "image/jpeg")
},
to: "https://api.mailgun.net/v3/sandbox---.mailgun.org/messages",
method: .post,
headers: header,
encodingCompletion: { (result) in
debugPrint(result)
}
Result the same: The attachment has not been attached to the message.
How attach a file to a message in this case?

Answer 1

For anyone still working on this. It seems that the MailGun API looks for the name to be attachment on each of the attachments included so this line:
multipartFormData.append(imageData!, withName: "domru", fileName: "domru.jpeg", mimeType: "image/jpeg")
would need to be changed to:
multipartFormData.append(imageData!, withName: "attachment", fileName: "domru.jpeg", mimeType: "image/jpeg")
not sure if that entirely fixes it