#pragma once namespace Poco { namespace Net { class SocketAddress; } } namespace DB { /** Lets you check if the address is similar to `localhost`. * The purpose of this check is usually to make an assumption, * that when we go to this address via the Internet, we'll get to ourselves. * Please note that this check is not accurate: * - the address is simply compared to the addresses of the network interfaces; * - only the first address is taken for each network interface; * - the routing rules that affect which network interface we go to the specified address are not checked. */ bool isLocalAddress(const Poco::Net::SocketAddress & address); }