iOS 怎么添加代理拦截，怎么判断有无使用代理加载网络？

有的app抓包工具使用的是代理进行的数据抓取，针对这个检测要怎么判断呢，见如下代码即可进行检测

 

+ (BOOL)cannotLoadData

{

    NSDictionary *proxySettings = (__bridge NSDictionary *)(CFNetworkCopySystemProxySettings());

    NSArray *proxies = (__bridge NSArray *)(CFNetworkCopyProxiesForURL((__bridge CFURLRef _Nonnull)([NSURL URLWithString:@"http://www.baidu.com""]), (__bridge CFDictionaryRef _Nonnull)(proxySettings)));

    

    NSDictionary *settings = proxies[0];

 

    if ([[settings objectForKey:(NSString *)kCFProxyTypeKey] isEqualToString:@"kCFProxyTypeNone"]) {

        return NO;

    } else {

        return YES;

    }

}