How to set NSMutableRequest timeout less than 240 seconds after setting body?

I'm creating NSMutableRequest and adding data to body. Heres example how I do it:

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:stringURL] 
                                                           cachePolicy:NSURLRequestReloadIgnoringLocalCacheD开发者_运维问答ata 
                                                       timeoutInterval:230.0];
    NSLog(@"Time out interval: %f", request.timeoutInterval); >> Output: 230

    [request setHTTPBody:[body dataUsingEncoding:NSUTF8StringEncoding]];

    NSLog(@"Time out interval: %f", request.timeoutInterval); >> Output: 240
    [request setTimeoutInterval:230];
    NSLog(@"Time out interval: %f", request.timeoutInterval); >> Output: 240

Request timeout after creating it is 230. After I set body It is 240. And after I reset it to 230. It is still 240. Timeout value doesn't change unless I set it bigger?

Anyone has any idea why it is happening? How to make timeout interval less than 240 seconds?

On the iOS you just cannot specify timeout less then 240s in this way (because iPhone could run on a slow connection). For more details check: https://devforums.apple.com/message/108292#108292

If you're really need shorter timeout, you could use NSTimer. In that case just remember to use asynchronous request, which could be easily canceled.