怎么防止ios系统被抓包?防止ios系统被抓包的方法

#import <SystemConfiguration/CaptiveNetwork.h>
- (id)fetchHttpProxy {
 CFDictionaryRef dicRef = CFNetworkCopySystemProxySettings();
 const CFStringRef proxyCFstr = (const CFStringRef)CFDictionaryGetValue(dicRef,
                   (const void*)kCFNetworkProxiesHTTPProxy);
 NSString* proxy = (__bridge NSString *)proxyCFstr;
 return proxy;
}

- (id)fetchSSIDInfo {
 NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();
 NSLog(@"Supported interfaces: %@", ifs);
 id info = nil;
 for (NSString *ifnam in ifs) {
  info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
  NSLog(@"%@ => %@", ifnam, info);
  if (info && [info count]) { break; }
 }
 return info;
}

- (BOOL) checkProxySetting {
 NSDictionary *proxySettings = (__bridge NSDictionary *)(CFNetworkCopySystemProxySettings());
 NSArray *proxies = (__bridge NSArray *)(CFNetworkCopyProxiesForURL((__bridge CFURLRef _Nonnull)([NSURL URLWithString:@"https://www.baidu.com"]), (__bridge CFDictionaryRef _Nonnull)(proxySettings)));
 NSLog(@"\n%@",proxies);
 NSDictionary *settings = proxies[0];
 NSLog(@"%@",[settings objectForKey:(NSString *)kCFProxyHostNameKey]);
 NSLog(@"%@",[settings objectForKey:(NSString *)kCFProxyPortNumberKey]);
 NSLog(@"%@",[settings objectForKey:(NSString *)kCFProxyTypeKey]);
 if ([[settings objectForKey:(NSString *)kCFProxyTypeKey] isEqualToString:@"kCFProxyTypeNone"])
 {
  NSLog(@"没设置代理");
  return NO;
 }
 else
 {
  NSLog(@"设置了代理");
  return YES;
 }
}