Question

I am using NSURLConnection inside of an NSIncrementalStore to synchronize my NSManagedObject with rest based web service built in Rails. I am aware of +sendSynchronousRequest:returningResponse:error but my understanding is that will not allow me to access such things as the HTTP response status code which I will need to properly handle the response, my understanding is sendSynchronousRequest returns the data if it responds in the 200 range and fails if it doesn’t and doesn’t really give you much more than that.

I’m assuming I will somehow have to block the current method call after the NSURLConnection is instantiated and unblock it after NSURLConnection‘s delegate sets some value that can be returned by the blocked method.

I’m assuming this will involve some combination of NSLock and NSThread but I don’t know where to start with this.

Answer 1

If you cast the response object that you get from the returningResponse: parameter to an NSHTTPURLResponse, you can access the status code and other HTTP-specific response values.

NSURLResponse* response = nil;
NSError* error = nil;
NSData* data = [NSURLConnection sendSynchronousRequest:request
                                     returningResponse:&response
                                                 error:&error];
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
if ([httpResponse statusCode] == 200) {
    // ...
}