Swift can't send URLRequest at all?

Swift can't send URLRequest at all?

By : Julien Banse
Date : November 23 2020, 01:01 AM
help you fix your problem DO NOT test network asynchronous requests on a commande line project. The execution flow will stop before the asynchronousRequest terminates... You would need to add a run loop for that. Check out this link for an example.
You should take the habit to print out everything you get from a request, to understand what is going on. You can comment out everything after you are sure the request is working as expected.
code :
var url : String = "http://google.com?test=toto&test2=titi"

var request : NSMutableURLRequest = NSMutableURLRequest()
request.URL = NSURL(string: url)
request.HTTPMethod = "GET"

NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue(),

    completionHandler:{ (response:NSURLResponse!, data: NSData!, error: NSError!) -> Void in


        var strData = NSString(data: data, encoding: NSUTF8StringEncoding)

        println("Body: \(strData)\n\n")
        println("Response: \(response)")

        var err:NSError?
        let jsonResult: NSDictionary! = NSJSONSerialization.JSONObjectWithData(data, options:NSJSONReadingOptions.MutableContainers, error: &err) as? NSDictionary

        if (jsonResult != nil) {
            println("jsonresult : \(jsonResult)")
            // process jsonResult
        } else {
            // couldn't load JSON, look at error

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How send parameters for URLRequest

How send parameters for URLRequest

By : LaurenceC
Date : March 29 2020, 07:55 AM
This might help you I have send parameters for my backend in PHP but i have code and i not send parameters look , You need to use the 'variables' field in the URLRequest object:
code :
var request:URLRequest = new URLRequest(url);
request.method = URLRequestMethod.POST;
var variables:URLVariables = new URLVariables();
variables.param1 = ...
variables.param2 = ...
variables.param3 = ...
request.data = variables;

var urlLoader:URLLoader = new URLLoader();
urlLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
urlLoader.addEventListener(Event.COMPLETE, urlLoader_complete);
urlLoader.addEventListener(IOErrorEvent.IO_ERROR, urlLoader_error);
Swift: Adding SSL key to URLRequest

Swift: Adding SSL key to URLRequest

By : Kurt
Date : March 29 2020, 07:55 AM
hope this fix your issue Swift 4 Assuming you have purchased yourself an SSL certificate, Google how to convert your SSL bundle certificate (.crt file) to .der format using OpenSSL in Terminal. Locate the .der file you created in your file system and drag it into your project folder in Xcode. Next, go to your project root and under Build Phases, click on the drop down list 'Copy Bundle Resources' and click the + button to add the .der file to the resource list.
Next you will need to make a class that implements URLSessionDelegate (in my case I called it URLSessionPinningDelegate) and when you formulate your URLSession call, you will pass in this class as the delegate. You should have a look at how to implement SSL certificate pinning for instructions on how to implement this class. This site here has a perfect and functioning explanation of how to do that.
code :
if let url = NSURL(string: "https://www.example.com") { // Your SSL server URL
var request = URLRequest(url: url as URL)
let password = "" // Your password value
request.setValue("Authorization", forHTTPHeaderField: password)

let session = URLSession(
configuration: URLSessionConfiguration.ephemeral,
delegate: URLSessionPinningDelegate(),
delegateQueue: nil)
let task = session.dataTask(with: request, completionHandler: { (data, response, error) in
            if error != nil {
                print("error: \(error!.localizedDescription): \(error!)")
            } else if data != nil {
                if let str = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) {
                    print("Received data:\n\(str)")
                } else {
                    print("Unable to convert data to text")

URLRequest with headers in Swift

URLRequest with headers in Swift

By : Pushpendra Pateria
Date : March 29 2020, 07:55 AM
should help you out You have to add .resume() after dataTask{...}.
As a result, it would look like this:
code :
session.dataTask(with: request, completionHandler: { (data: Data?, response: URLResponse?, error: Error?) in
    if let data = data{
            let json = try JSONSerialization.jsonObject(with: data)
        catch {

Interceptors for URLRequest and URLSession for adding custom header fields for all URLRequest?

Interceptors for URLRequest and URLSession for adding custom header fields for all URLRequest?

By : user2046897
Date : March 29 2020, 07:55 AM
wish help you to fix your issue How can i add custom Interceptor in URLRequest and URLSession for all URLRequest in app. So i can add my own custom HTTPHeader Fields at one place for all http request, there is alamofire Interceptor but i don't want to use alamofire, i want Interceptor in urlsession and urlrequest in swift 4. I extend the urlrequest but not work for me.
code :
 //Here is the answer for "Custom Header Fields" for all URLRequest.   

extension URLRequest {
        init(_ url: URL) {
            self.init(url: url)
            self.setValue("Value", forHTTPHeaderField: "fieldNamme")

//how to use
func aBC(){
    //how to call it.
    let myUrl = URL(string: "Your url string")
    let request =  URLRequest(myUrl) //this will work and add custom header
    //let request =  URLRequest(url: myUrl) // this will not work because it call the super init method of urlrequest.

    request.httpMethod = "POST"
    do {
        request.httpBody = try JSONSerialization.data(withJSONObject: ["bodyParam" : "value"], options: [])
    } catch let error {

    let dataTask = URLSession.shared.dataTask(with: request) {
        data,response,error in

        do {
           // .
           // .
        } catch let error as NSError {
Swift Generic URLRequest

Swift Generic URLRequest

By : Michael
Date : March 29 2020, 07:55 AM
Hope that helps Preface: This code's a mess of inconsistent indentation and unnecessary whitespace (it reads like a double-spaced essay lol), I cleaned it up.
Looks like your function needs to take a T, but not just any T, but one that is constrained to being Encodable. This is a common observation: more general generic parameters are compatible with more types, but can do we less with them. By containing T to Encodable, we can use it with JSONEncoder.encode.
code :
import Foundation

struct Person: Codable {
    var fName: String
    var lName: String

struct Location: Codable {
    var city: String
    var state: String

// stubs for making compilation succeed
let apiKey = "dummy"
let withAPIKey = true
enum HTTPMethod: String { case GET } 

private func createRequest<Body: Encodable>(method: HTTPMethod, url: URL, withBody body: Body) throws -> URLRequest { 

    var newRequest = URLRequest(url: url)
    newRequest.httpMethod = method.rawValue

    newRequest.httpBody = try JSONEncoder().encode(body)

    if withAPIKey {
        newRequest.setValue(apiKey, forHTTPHeaderField: "APIKEY")

    return newRequest

let data = Person(fName: "John", lName: "Smith")
let location = Location(city: "Atlanta", state: "Georgia")
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