iOS HTTP Post request

httpPostRequest

/**
 *	Do an HTTP POST request and return the results
 *
 *	@param	NSString *	url		the URL
 *	@param	NSString *	post	the POST data
 *
 *	@return	NSDictionary *		a dictionary containing the response, error, and data
 */
+ (NSDictionary *)httpPostRequestWithUrl:(NSString *)url post:(NSString *)post
{
	NSData *postData     = [post dataUsingEncoding:NSUTF8StringEncoding];
	NSString *postLength = [NSString stringWithFormat:@"%d", (int)[postData length]];
	
	NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
	[request setURL:[NSURL URLWithString:url]];
	[request setHTTPMethod:@"POST"];
	[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
	[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
	[request setHTTPBody:postData];
	[request setTimeoutInterval:30]; // set timeout for 30 seconds
	
	[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
	
	NSHTTPURLResponse 	*response = nil;
	NSError 		*error = nil;
	NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
	
	[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
	
	NSMutableDictionary *rc = [[NSMutableDictionary alloc] init];
	if ( response )
		[rc setObject:response forKey:@"response"];
	if ( error )
		[rc setObject:error forKey:@"error"];
	if ( data )
		[rc setObject:data forKey:@"data"];
	
	return (NSDictionary *)rc;
}