After through this method
[self.packetFlow readPacketsWithCompletionHandler:^(NSArray<NSData *> * _Nonnull packets, NSArray<NSNumber *> * _Nonnull protocols) {
}];
to get the data,I want to block some ip address,And then,how to send the data back to my iphone?I just block some thing,so i don't have to send them to a VPN server.
After read the data,if I do nothing,The iphone will not be able to access the network.
[self.packetFlow readPacketsWithCompletionHandler:^(NSArray<NSData *> * _Nonnull packets, NSArray<NSNumber *> * _Nonnull protocols) {
//do some block
[self.packetFlow writePackets:packets withProtocols:protocols];
}];
And this is not work.