Call Rest API from Swift3 - swift

Question

I trying to send a POST request in swift for example :
url = "http://localhost:9080/mfp/api/az/v1/token"
Headers :
Authorization = "Basic UGlua0NhclBhc3NlbmdlcjoxMjM0"
Content-Type = "application/x-www-form-urlencoded"
Body :
grant_type = client_credentials
scope = RegisteredClient messages.write push.application.com.XXX
What's simple way to do it ?
I've tried by use IBMMobileFirstPlatformFoundation SDK, it's return error "Can't not connect to server",but i'm sure that the connect still good... Here's my code :
let urlString = "http://localhost:9080/mfp/api/az/v1/token"
let url1 = URL(string: urlString)
let request1 = WLResourceRequest(url: url1! as URL, method: WLHttpMethodPost)!
request1.addHeaderValue("Basic UGlua0NhclBhc3NlbmdlcjoxMjM0" as NSObject, forName: "Authorization")
request1.addHeaderValue("application/x-www-form-urlencoded" as NSObject, forName: "Content-Type")
request1.send(withBody: "{\"grant_type\":\"client_credentials\",\"scope\":\"RegisteredClient messages.write push.application.com.XXX\"}", completionHandler: { (response, error) in
if error == nil {
print("Response : ")
print(response)
} else {
print("Error : ")
print(error)
}
})

Answer 1

You can use Alamofire as ZassX suggested or you can use URLSession.
I have some code as an example:
func postRequest(toUrl url: String, accessKey: String?, completion: #escaping(Data?, HTTPURLResponse?, Error?, AnyObject?) -> Void){
let requestUrl = NSURL(string: url)
let request = NSMutableURLRequest(url: requestUrl! as URL)
if accessKey != nil {
request.setValue("\(accessKey!)", forHTTPHeaderField: "Authorization")
}
request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
request.httpBody = yourBody
URLSession.shared.dataTask(with: request as URLRequest, completionHandler: { (data,response,error) in
if let content = data{
do{
let myJSON = try JSONSerialization.jsonObject(with: content, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject
completion(data as Data?, response as? HTTPURLResponse, error, myJSON)
}
catch{
print("JSON ERROR")
}
}else{
completion(data as Data?, response as? HTTPURLResponse, error, nil)
}
}).resume()
}

Answer 2

First, you don't manually manage the security token when you're using the MobileFirst SDK, it's handled automatically.
Next, WLResourceRequest() takes a URL that is relative to the MobileFirst server URL (http://localhost:9080/mfp, in your case). You can see that "base" URL in your mfpclient.plist file.
Your code will then look something like
let request = WLResourceRequest(
URL: NSURL(string: "/adapters/MyAdapter/myResource"),
method: WLHttpMethodGet
)
See https://mobilefirstplatform.ibmcloud.com/tutorials/en/foundation/8.0/application-development/resource-request/ios/