nsurlconnection

Is it advisable to wrap up NSUrlConnection in a gcd style blocks and run it on a low_priority queue? I need to ensure that my connections are not happening on the main thread and the connections need to be asynchronous. I also need several simultaneous requests to go at once. If I go the gcd route, I'm not sure which thread the NSUrlConnectionDelegate methods get invoked on. NSURLConnection relies on delegates so once the connection is complete, whatever wrapper class that handles it will need to invoke its caller. I'm not certain how to deal with all of the various callbacks that are invoked

-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; if([recievedData length]) [ recievedData setLength:0 ]; download_size =[response expectedContentLength]; } I have this code. download_size is NSInteger. expectedContentLenght always return: -1. Maybe someone know why? I tried use long, but effect was the same. Thanks for help. The expected content length is only set when the server provides it, such as by a Content-Length response header. A -1 size means the expected content

I have been using NSURLConnection's sendAsynchronousRequest:queue:completionHandler: method which is great. But, I now need to make multiple requests in a row. How can I do this while still using this great asychronous method? There's lots of ways you can do this depending on the behavior you want. You can send a bunch of asynchronous requests at once, track the number of requests that have been completed, and do something once they're all done: NSInteger outstandingRequests = [requestsArray count]; for (NSURLRequest *request in requestsArray) { [NSURLConnection sendAsynchronousRequest:request

I have the following problem. On a NSMutableURLRequest using the HTTP method POST the timeout interval set for the connection is ignored. If the internet connection has a problem (wrong proxy, bad dns) the url request fails after about 2-4 minutes but not with NSLocalizedDescription = "timed out"; NSUnderlyingError = Error Domain=kCFErrorDomainCFNetwork Code=-1001 UserInfo=0x139580 "The request timed out. If the http method used is GET it works fine. The connection is async over https . NSURL *url = [NSURL URLWithString:urlString]; NSMutableURLRequest *request = [NSMutableURLRequest

I am using iOS 7's new NSURLSessionDataTask to retrieve data as follows: NSURLSession *session = [NSURLSession sharedSession]; NSURLSessionDataTask *dataTask = [session dataTaskWithRequest: request completionHandler: ^(NSData *data, NSURLResponse *response, NSError *error) { // }]; How can I increase the time out values to avoid the error "The request timed out" (in NSURLErrorDomain Code= -1001 )? I have checked the documentation for NSURLSessionConfiguration but did not find a way to set the time out value. Thank you for your help! ObjC NSURLSessionConfiguration *sessionConfig =