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#pragma once
#include <base/types.h>
#include <Poco/Net/IPAddress.h>
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, UInt16 clickhouse_port);
bool isLocalAddress(const Poco::Net::SocketAddress & address);
bool isLocalAddress(const Poco::Net::IPAddress & address);
/// Returns number of different bytes in hostnames, used for load balancing
size_t getHostNameDifference(const std::string & local_hostname, const std::string & host);
}
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