asiHttpRequst 超时代码判断

- (void)requestFailed:(ASIHTTPRequest *)request{
    
    NSDictionary *userInfo = [request userInfo];
    id delegate = [userInfo objectForKey:@"target"];
    int conTag = [[userInfo objectForKey:@"tag"] intValue];

    if ([delegate isKindOfClass:[UIViewController class]]) {
        UIViewController *ctl = (UIViewController*)delegate;
        [MBProgressHUD hideHUDForView:ctl.view animated:YES];
    }else if([delegate isKindOfClass:[UIView class]]){
        UIView *views = (UIView*)delegate;
        [MBProgressHUD hideHUDForView:views animated:YES];
    }

    NSLog(@"错误信息:%@",[request error]);
    
    NSLog(@"
失败--->>>>>  ConnectId = %d  地址:%@  
结果 %@",conTag,[[request url] absoluteString],[request responseString]);
    
    NSError *error = [request error];
    NSInteger code = [error code];
    if (code == 2) {    // 请求超时
        UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"" message:@"请求超时" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
        [av show];
        [av release];
        return;
    }
    UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"" message:@"数据请求失败" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [av show];
    [av release];
}