#pragma once
#if OS(WINDOWS)
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <netinet/in.h>
#endif
#include <wtf/Forward.h>
#include <wtf/Optional.h>
#include <wtf/Variant.h>
namespace WebCore {
class IPAddress {
public:
static Optional<IPAddress> fromSockAddrIn6(const struct sockaddr_in6&);
explicit IPAddress(const struct in_addr& address)
: m_address(address)
{
}
explicit IPAddress(const struct in6_addr& address)
: m_address(address)
{
}
bool isIPv4() const { return WTF::holds_alternative<struct in_addr>(m_address); }
bool isIPv6() const { return WTF::holds_alternative<struct in6_addr>(m_address); }
const struct in_addr& ipv4Address() const { return WTF::get<struct in_addr>(m_address); }
const struct in6_addr& ipv6Address() const { return WTF::get<struct in6_addr>(m_address); }
private:
Variant<struct in_addr, struct in6_addr> m_address;
};
enum class DNSError { Unknown, CannotResolve, Cancelled };
using DNSAddressesOrError = Expected<Vector<IPAddress>, DNSError>;
using DNSCompletionHandler = CompletionHandler<void(DNSAddressesOrError&&)>;
WEBCORE_EXPORT void prefetchDNS(const String& hostname);
WEBCORE_EXPORT void resolveDNS(const String& hostname, uint64_t identifier, DNSCompletionHandler&&);
WEBCORE_EXPORT void stopResolveDNS(uint64_t identifier);
inline Optional<IPAddress> IPAddress::fromSockAddrIn6(const struct sockaddr_in6& address)
{
if (address.sin6_family == AF_INET6)
return IPAddress { address.sin6_addr };
if (address.sin6_family == AF_INET)
return IPAddress {reinterpret_cast<const struct sockaddr_in&>(address).sin_addr };
return { };
}
}