What is NSURLConnection in Swift?

An NSURLConnection object lets you load the contents of a URL by providing a URL request object. The NSURLConnection class provides convenience class methods to load URL requests both asynchronously using a callback block and synchronously.

How NSURLSession works?

The NSURLSession API provides four types of tasks:

  1. Data tasks send and receive data using NSData objects.
  2. Upload tasks are similar to data tasks, but they also send data (often in the form of a file), and support background uploads while the app isn’t running.

How do I call a webservice in Swift 4?

How To Call Webservice in Swift – NSURLConnection?

  1. 12 var request: NSURLRequest = NSURLRequest(URL: url) var connection: NSURLConnection = NSURLConnection(request: request, delegate: self, startImmediately: false)
  2. 1234 func connection(didReceiveResponse: NSURLConnection!,
  3. didReceiveData :

What is URLSession configuration?

An URLSessionConfiguration object defines the behavior and policies to use when uploading and downloading data using an URLSession object. You use this object to configure the timeout values, caching policies, connection requirements, and other types of information that you intend to use with your URLSession object.

When to send nsurlsession string to the server?

For example we may want to send the string: To the server when a user signs up to your application, so the server can store this information in a database. Let’s get started. You’ll want to create a NSURLSession POST request with the following code.

How is nsurlconnection similar to nsurlsessiontask?

NSURLSessionTask is most analogous to NSURLConnection in that it is responsible for loading data, with the main difference being that tasks share the common delegate of their parent NSURLSession. We’ll dive into tasks first, and then talk more about session configuration later on.

How is nsurlconnection used in a synchronous request?

A Synchronous Example A synchronous request looks like the below: A NSURLRequest is still required. The NSURLResponse and NSError vars are passed into the sendSynchronousReqeust method so when it returns, they will be populated with the raw response and error (if any).

How does nsurlsession return data to the app?

Like most networking APIs, the NSURLSession API is highly asynchronous. It returns data to your app in one of two ways, depending on the methods you call: By calling a completion handler block when a transfer finishes successfully or with an error. By calling methods on the session’s delegate as data arrives and when the transfer is complete.

Share this post