NSURLSession: How to increase time out for URL requests?

Question

I am using iOS 7\'s new NSURLSessionDataTask to retrieve data as follows:

NSURLSession *session = [NSURLSession sharedSession];

NSURLSessionDat         


        

Answer 1

In case Swift developer coming here

to do this, you need to use

    let urlconfig = NSURLSessionConfiguration.defaultSessionConfiguration()
    urlconfig.timeoutIntervalForRequest = 12
    urlconfig.timeoutIntervalForResource = 12
    self.session = NSURLSession(configuration: urlconfig, delegate: self.delegates, delegateQueue: nil)

Answer 2

In my case I was increasing the timeout of the wrong class. My timeout error was solved by increasing the timeout of the URLRequest not the URLSession

var request = URLRequest(url: url)
request.timeoutInterval = 30

Answer 3

In SWIFT 3.0, You need to use

 if let cleanURLString = urlString.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed),
    let theURL: Foundation.URL = Foundation.URL(string: cleanURLString) {

    var task:URLSessionDataTask?
    let urlconfig = URLSessionConfiguration.default
    urlconfig.timeoutIntervalForRequest = 20
    urlconfig.timeoutIntervalForResource = 60
    let session = Foundation.URLSession(configuration: urlconfig, delegate: self, delegateQueue: OperationQueue.main)

    let request = URLRequest(url: theURL)
    request.httpMethod = "POST"
    request.cachePolicy = URLRequest.CachePolicy.reloadIgnoringCacheData
    request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
    let paramString = YourParameterString
    request.httpBody = paramString.data(using: String.Encoding.utf8)

    task = session.dataTask(with: request) {
        (data, response, error) in
        // Do here
    })
    dataTask.resume()
}

Answer 4

NSURLSessionConfiguration includes the property timeoutIntervalForRequest:

@property NSTimeInterval timeoutIntervalForRequest

to control the timeout interval. There is also timeoutIntervalForResource for the timeout after the request is initiated.

Answer 5

In swift 3. timeout 15 seconds.

    let configuration = URLSessionConfiguration.default
    configuration.timeoutIntervalForRequest = TimeInterval(15)
    configuration.timeoutIntervalForResource = TimeInterval(15)
    let session = URLSession(configuration: configuration)

Answer 6

For Swift 4:

let config = URLSessionConfiguration.default
config.timeoutIntervalForRequest = TimeInterval(15)
config.timeoutIntervalForResource = TimeInterval(15)
let urlSession = URLSession(configuration: config)

The timeoutIntervalForRequest is for all tasks within sessions based on this configuration. The timeoutIntervalForResource is for all tasks within sessions based on this configuration.