C++ (Cpp) set_ipv6_only_enabled Beispiele

Beispiel #1

Datei: net_socket_posix.cpp Projekt: bigscorpions/godot

Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
	ERR_FAIL_COND_V(is_open(), ERR_ALREADY_IN_USE);
	ERR_FAIL_COND_V(ip_type > IP::TYPE_ANY || ip_type < IP::TYPE_NONE, ERR_INVALID_PARAMETER);

#if defined(__OpenBSD__)
	// OpenBSD does not support dual stacking, fallback to IPv4 only.
	if (ip_type == IP::TYPE_ANY)
		ip_type = IP::TYPE_IPV4;
#endif

	int family = ip_type == IP::TYPE_IPV4 ? AF_INET : AF_INET6;
	int protocol = p_sock_type == TYPE_TCP ? IPPROTO_TCP : IPPROTO_UDP;
	int type = p_sock_type == TYPE_TCP ? SOCK_STREAM : SOCK_DGRAM;
	_sock = socket(family, type, protocol);

	if (_sock == SOCK_EMPTY && ip_type == IP::TYPE_ANY) {
		// Careful here, changing the referenced parameter so the caller knows that we are using an IPv4 socket
		// in place of a dual stack one, and further calls to _set_sock_addr will work as expected.
		ip_type = IP::TYPE_IPV4;
		family = AF_INET;
		_sock = socket(family, type, protocol);
	}

	ERR_FAIL_COND_V(_sock == SOCK_EMPTY, FAILED);
	_ip_type = ip_type;

	if (family == AF_INET6) {
		// Select IPv4 over IPv6 mapping
		set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
	}

	if (protocol == IPPROTO_UDP && ip_type != IP::TYPE_IPV6) {
		// Enable broadcasting for UDP sockets if it's not IPv6 only (IPv6 has no broadcast option).
		set_broadcasting_enabled(true);
	}

	_is_stream = p_sock_type == TYPE_TCP;

#if defined(WINDOWS_ENABLED)
	if (!_is_stream) {
		// Disable windows feature/bug reporting WSAECONNRESET/WSAENETRESET when
		// recv/recvfrom and an ICMP reply was received from a previous send/sendto.
		unsigned long disable = 0;
		if (ioctlsocket(_sock, SIO_UDP_CONNRESET, &disable) == SOCKET_ERROR) {
			print_verbose("Unable to turn off UDP WSAECONNRESET behaviour on Windows");
		}
		if (ioctlsocket(_sock, SIO_UDP_NETRESET, &disable) == SOCKET_ERROR) {
			// This feature seems not to be supported on wine.
			print_verbose("Unable to turn off UDP WSAENETRESET behaviour on Windows");
		}
	}
#endif
	return OK;
}

Beispiel #2

Datei: net_socket_posix.cpp Projekt: ZX-WT/godot

Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
	ERR_FAIL_COND_V(is_open(), ERR_ALREADY_IN_USE);
	ERR_FAIL_COND_V(ip_type > IP::TYPE_ANY || ip_type < IP::TYPE_NONE, ERR_INVALID_PARAMETER);

#if defined(__OpenBSD__)
	// OpenBSD does not support dual stacking, fallback to IPv4 only.
	if (ip_type == IP::TYPE_ANY)
		ip_type = IP::TYPE_IPV4;
#endif

	int family = ip_type == IP::TYPE_IPV4 ? AF_INET : AF_INET6;
	int protocol = p_sock_type == TYPE_TCP ? IPPROTO_TCP : IPPROTO_UDP;
	int type = p_sock_type == TYPE_TCP ? SOCK_STREAM : SOCK_DGRAM;
	_sock = socket(family, type, protocol);

	if (_sock == SOCK_EMPTY && ip_type == IP::TYPE_ANY) {
		// Careful here, changing the referenced parameter so the caller knows that we are using an IPv4 socket
		// in place of a dual stack one, and further calls to _set_sock_addr will work as expected.
		ip_type = IP::TYPE_IPV4;
		family = AF_INET;
		_sock = socket(family, type, protocol);
	}

	ERR_FAIL_COND_V(_sock == SOCK_EMPTY, FAILED);
	_ip_type = ip_type;

	if (family == AF_INET6) {
		// Select IPv4 over IPv6 mapping
		set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
	}

	if (protocol == IPPROTO_UDP && ip_type != IP::TYPE_IPV6) {
		// Enable broadcasting for UDP sockets if it's not IPv6 only (IPv6 has no broadcast option).
		set_broadcasting_enabled(true);
	}

	_is_stream = p_sock_type == TYPE_TCP;
	return OK;
}