401 Forbidden when sending email with Swift and Mailgun - swift

Question

I have the following code but consistently get error 401 forbidden when attempting to run it:
func email() {
let session = URLSession.shared
let request = NSMutableURLRequest(url: NSURL(string: "https://api.mailgun.net/v3/{edited_out}/messages")! as URL)
request.httpMethod = "POST"
let data = "from: Swift Email <(test#test.com)>&to: [my_email_address#gmail.com,(my_email_address#gmail.com)]&subject:Hello&text:Testing_some_Mailgun_awesomness"
request.httpBody = data.data(using: String.Encoding.ascii)
request.setValue("application/x-www-form-urlencoded; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.setValue("key-{edited_out}", forHTTPHeaderField: "api")
let task = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in
if let error = error {
print(error)
}
if let response = response {
print("url = \(response.url!)")
print("response = \(response)")
let httpResponse = response as! HTTPURLResponse
print("response code = \(httpResponse.statusCode)")
}
})
task.resume()
}
The error is:
url = https://api.mailgun.net/v3/{edited_out}/messages
response = <NSHTTPURLResponse: 0x600000226a20> { URL: https://api.mailgun.net/v3/{edited_out}/messages } { status code: 401, headers {
Connection = "keep-alive";
"Content-Length" = 9;
"Content-Type" = "text/html; charset=utf-8";
Date = "Thu, 29 Dec 2016 21:22:46 GMT";
Server = nginx;
"Www-Authenticate" = "Basic realm=\"MG API\"";
} }
response code = 401
If I send such a request via curl with my credentials it works fine.
Any ideas?

Answer 1

You need to set the uesrname and the password.
Something like this:
request.setValue("Basic \(base64Credentials)", forHTTPHeaderField: "Authorization")
and base64Credentials is the :
let credentials= String(format: "%#:%#", username, password)
let base64Credentials= credentials.data(using: String.Encoding.utf8)!

Answer 2

Finally got it working with the following code, if it helps anyone else:
func email() {
let session = URLSession.shared
let request = NSMutableURLRequest(url: NSURL(string: "https://api.mailgun.net/v3/{edited_out}/messages")! as URL)
request.httpMethod = "POST"
let credentials = "api:key-{omitted}"
request.setValue("Basic \(credentials.toBase64())", forHTTPHeaderField: "Authorization")
let data = "from: Swift Email <(test#test.com)>&to: [my_email_address#gmail.com,(my_email_address#gmail.com)]&subject:Hello&text:Testing_some_Mailgun_awesomness"
request.httpBody = data.data(using: String.Encoding.ascii)
let task = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in
if let error = error {
print(error)
}
if let response = response {
print("url = \(response.url!)")
print("response = \(response)")
let httpResponse = response as! HTTPURLResponse
print("response code = \(httpResponse.statusCode)")
}
})
task.resume()
}
extension String {
func fromBase64() -> String? {
guard let data = Data(base64Encoded: self) else {
return nil
}
return String(data: data, encoding: .utf8)
}
func toBase64() -> String {
return Data(self.utf8).base64EncodedString()
}
}
So I guess the answer from William would have worked with:
let base64Credentials = credentials.data(using: String.Encoding.utf8)!.base64EncodedString()
Instead of:
let base64Credentials = credentials.data(using: String.Encoding.utf8)!