I have this code

   NSString *tr = [self sendUrl:@"http://google.com/"];

But for some reason 'tr' will remain nil after it is executed. What am I doing wrong?

sendUrl :

- (NSString *)sendUrl:(NSString *) uri {

NSLog(@"Requesting URI 1 ...");

// Prepare URL request to download statuses from Twitter
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:uri]];

NSLog(@"Requesting URI 2 ...");

// Perform request and get JSON back as a NSData object
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

NSLog(@"Requesting URI 3 ...");

// Get JSON as a NSString from NSData response
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];

NSLog(@"Requesting URI 4 ...");

return json_string;
}