+(NSURLSessionConfiguration *)createSessionConfig {

    NSURLSessionConfiguration *sessionConfig =
    [NSURLSessionConfiguration ephemeralSessionConfiguration];

    sessionConfig.allowsCellularAccess = YES;
    sessionConfig.timeoutIntervalForRequest = 30.0;
    sessionConfig.timeoutIntervalForResource = 60.0;
    sessionConfig.HTTPMaximumConnectionsPerHost = 10;
    sessionConfig.URLCache = nil;
    sessionConfig.URLCredentialStorage = nil;
    sessionConfig.HTTPCookieStorage = nil;

    return sessionConfig;
}