ios开发防止App被抓包（设代理后禁止请求）

此种方法是判断出是否设置代理，然后自行处理相关操作（如已设代理后禁止请求等）
下面的代码，如果proxy 有值，可以判断当前wifi使用了http proxy。

#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;
}

另外，还有一些WiFi的其他信息也可以通过代码获取到，比如：ssid，广播地址、子网掩码、端口等：

- (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;
}

下面的方法更方便的 (已验证)

- (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;
}
 
}