1#pragma once
2
3#include <common/Types.h>
4#include <Poco/Net/IPAddress.h>
5
6
7namespace Poco
8{
9 namespace Net
10 {
11 class SocketAddress;
12 }
13}
14
15namespace DB
16{
17 /** Lets you check if the address is similar to `localhost`.
18 * The purpose of this check is usually to make an assumption,
19 * that when we go to this address via the Internet, we'll get to ourselves.
20 * Please note that this check is not accurate:
21 * - the address is simply compared to the addresses of the network interfaces;
22 * - only the first address is taken for each network interface;
23 * - the routing rules that affect which network interface we go to the specified address are not checked.
24 */
25 bool isLocalAddress(const Poco::Net::SocketAddress & address, UInt16 clickhouse_port);
26 bool isLocalAddress(const Poco::Net::SocketAddress & address);
27 bool isLocalAddress(const Poco::Net::IPAddress & address);
28
29 /// Returns number of different bytes in hostnames, used for load balancing
30 size_t getHostNameDifference(const std::string & local_hostname, const std::string & host);
31}
32