CURL to URLRequest in Swift. (MUX LIVE STREAMING API) - json

Question

Hello I am trying to create a live stream with mux api with a post request in my swift app.
This is what the cURL looks like. The MUX TOKEN ID & SECRET ID are defined in my app in swift:
curl https://api.mux.com/video/v1/live-streams \
-H "Content-Type: application/json" \
-X POST \
-d '{ "playback_policy": "public", "new_asset_settings": { "playback_policy": "public" } }' \
-u ${MUX_TOKEN_ID}:${MUX_TOKEN_SECRET}
This is my code in swift:
func getStreamKeys() {
let url = URL(string: "https://api.mux.com/video/v1/live-streams")!
var request = URLRequest(url: url)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let parameters: [String: Any] = [
"playback_policy": "public",
"new_asset_settings": ["playback_policy": "public"]
]
request.httpBody = parameters.percentEncoded()
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data,
let response = response as? HTTPURLResponse,
error == nil else { // check for fundamental networking error
print("error", error ?? "Unknown error")
return
}
guard (200 ... 299) ~= response.statusCode else { // check for http errors
print("statusCode should be 2xx, but is \(response.statusCode)")
print("response = \(response)")
return
}
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(responseString)")
}
task.resume()
}
This is the response I get:
response = <NSHTTPURLResponse: 0x281c928e0> { URL: https://api.mux.com/video/v1/live-streams } { Status Code: 401, Headers {
"Cache-Control" = (
"max-age=0, private, must-revalidate"
);
"Content-Length" = (
69
);
"Content-Type" = (
"application/json; charset=utf-8"
);
Date = (
"Tue, 03 Mar 2020 22:34:45 GMT"
);
Server = (
"Mux API Server v1.89.12"
);
"x-request-id" = (
"FfjsHsz4jsEe_3oAcmYi"
);
} }
This is how the response should be:
{
"data": {
"id": "QrikEQpEXp3RvklQSHyHSYOakQkXlRId",
"stream_key": "super-secret-stream-key",
"status": "idle",
"playback_ids": [
{
"policy": "public",
"id": "OJxPwQuByldIr02VfoXDdX6Ynl01MTgC8w02"
}
],
"created_at": "1527110899"
}
}
I still need to pass -u ${MUX_TOKEN_ID}:${MUX_TOKEN_SECRET} the id and secret are constant and should be defined in the getStreamKeys. If someone can help me with it. Thanks

Answer 1

You'll need to add the auth to the api call as described below.
I also replaced your percentEncoded() with JSONSerialization as I do not know what you have in there.
let MUX_TOKEN_ID: String = ""
let MUX_TOKEN_SECRET: String = ""
func getStreamKeys() {
let url = URL(string: "https://api.mux.com/video/v1/live-streams")!
var request = URLRequest(url: url)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
let auth = "\(MUX_TOKEN_ID):\(MUX_TOKEN_SECRET)" // create string
let base64Auth = Data(auth.utf8).base64EncodedString() // base64encode the string
request.setValue("Basic \(base64Auth)", forHTTPHeaderField: "Authorization") // add auth to headers
request.httpMethod = "POST"
let parameters: [String: Any] = [
"playback_policy": "public",
"new_asset_settings": ["playback_policy": "public"]
]
do {
let jsonData = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted)
request.httpBody = jsonData
print(jsonData)
} catch let e {
print(e)
}
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data,
let response = response as? HTTPURLResponse,
error == nil else { // check for fundamental networking error
print("error", error ?? "Unknown error")
return
}
print(response)
guard (200 ... 299) ~= response.statusCode else { // check for http errors
print("statusCode should be 2xx, but is \(response.statusCode)")
print("response = \(response)")
return
}
let responseString = String(data: data, encoding: .utf8)
}
task.resume()
}

Answer 2

So the -u flag on curl encodes the value as base64 and passes it as the header
Authorization: Basic <some base64 string>
So in Swift, you'd have to encode the values of ${MUX_TOKEN_ID}:${MUX_TOKEN_SECRET} then pass it into the header dictionary.
Example:
let authString = "\(MUX_TOKEN_ID):\(MUX_TOKEN_SECRET)"
let encodedAuthString = Data(authString).base64EncodedString()
request.setValue("Basic \(encodedAuthString)", forHTTPHeaderField: "Authorization")