adding ipv6

17 files changed, 444 insertions, 126 deletions

diff --git a/core/io/ip.cpp b/core/io/ip.cpp
index a77aace07f..aba55687a5 100644
--- a/core/io/ip.cpp
+++ b/core/io/ip.cpp
@@ -32,6 +32,7 @@
 #include "hash_map.h"
 
 VARIANT_ENUM_CAST(IP::ResolverStatus);
+VARIANT_ENUM_CAST(IP_Address::AddrType);
 
 /************* RESOLVER ******************/
 
@@ -43,10 +44,12 @@ struct _IP_ResolverPrivate {
 		volatile IP::ResolverStatus status;
 		IP_Address response;
 		String hostname;
+		IP_Address::AddrType type;
 
 		void clear() {
 			status = IP::RESOLVER_STATUS_NONE;
 			response = IP_Address();
+			type = IP_Address::TYPE_NONE;
 			hostname="";
 		};
 
@@ -78,9 +81,9 @@ struct _IP_ResolverPrivate {
 
 			if (queue[i].status!=IP::RESOLVER_STATUS_WAITING)
 				continue;
-			queue[i].response=IP::get_singleton()->resolve_hostname(queue[i].hostname);
+			queue[i].response=IP::get_singleton()->resolve_hostname(queue[i].hostname, queue[i].type);
 
-			if (queue[i].response.host==0)
+			if (queue[i].response.type==IP_Address::TYPE_NONE)
 				queue[i].status=IP::RESOLVER_STATUS_ERROR;
 			else
 				queue[i].status=IP::RESOLVER_STATUS_DONE;
@@ -109,21 +112,21 @@ struct _IP_ResolverPrivate {
 
 
 
-IP_Address IP::resolve_hostname(const String& p_hostname) {
+IP_Address IP::resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type) {
 
-	GLOBAL_LOCK_FUNCTION
+	GLOBAL_LOCK_FUNCTION;
 
 	if (resolver->cache.has(p_hostname))
 		return resolver->cache[p_hostname];
 
-	IP_Address res = _resolve_hostname(p_hostname);
+	IP_Address res = _resolve_hostname(p_hostname, p_type);
 	resolver->cache[p_hostname]=res;
 	return res;
 
 }
-IP::ResolverID IP::resolve_hostname_queue_item(const String& p_hostname) {
+IP::ResolverID IP::resolve_hostname_queue_item(const String& p_hostname, IP_Address::AddrType p_type) {
 
-	GLOBAL_LOCK_FUNCTION
+	GLOBAL_LOCK_FUNCTION;
 
 	ResolverID id = resolver->find_empty_id();
 
@@ -133,6 +136,7 @@ IP::ResolverID IP::resolve_hostname_queue_item(const String& p_hostname) {
 	}
 
 	resolver->queue[id].hostname=p_hostname;
+	resolver->queue[id].type = p_type;
 	if (resolver->cache.has(p_hostname)) {
 		resolver->queue[id].response=resolver->cache[p_hostname];
 		resolver->queue[id].status=IP::RESOLVER_STATUS_DONE;
@@ -145,10 +149,6 @@ IP::ResolverID IP::resolve_hostname_queue_item(const String& p_hostname) {
 			resolver->resolve_queues();
 	}
 
-
-
-
-
 	return id;
 }
 
diff --git a/core/io/ip.h b/core/io/ip.h
index 38c86e7ba3..9ffe01b1af 100644
--- a/core/io/ip.h
+++ b/core/io/ip.h
@@ -48,6 +48,14 @@ public:
 		RESOLVER_STATUS_ERROR,
 	};
 
+	enum AddressType {
+
+		ADDRESS_IPV4 = 1,
+		ADDRESS_IPV6 = 2,
+
+		ADDRESS_ANY = 3,
+	};
+
 	enum {
 		RESOLVER_MAX_QUERIES = 32,
 		RESOLVER_INVALID_ID=-1
@@ -65,7 +73,7 @@ protected:
 	static IP*singleton;
 	static void _bind_methods();
 
-	virtual IP_Address _resolve_hostname(const String& p_hostname)=0;
+	virtual IP_Address _resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type = IP_Address::TYPE_ANY)=0;
 	Array _get_local_addresses() const;
 
 	static IP* (*_create)();
@@ -73,9 +81,9 @@ public:
 
 
 
-	IP_Address resolve_hostname(const String& p_hostname);
+	IP_Address resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type = IP_Address::TYPE_ANY);
 	// async resolver hostname
-	ResolverID resolve_hostname_queue_item(const String& p_hostname);
+	ResolverID resolve_hostname_queue_item(const String& p_hostname, IP_Address::AddrType p_type = IP_Address::TYPE_ANY);
 	ResolverStatus get_resolve_item_status(ResolverID p_id) const;
 	IP_Address get_resolve_item_address(ResolverID p_id) const;
 	virtual void get_local_addresses(List<IP_Address> *r_addresses) const=0;
diff --git a/core/io/ip_address.cpp b/core/io/ip_address.cpp
index 7a51bce7c6..2a8ab0ae00 100644
--- a/core/io/ip_address.cpp
+++ b/core/io/ip_address.cpp
@@ -32,29 +32,179 @@ IP_Address::operator Variant() const {
 
 	return operator String();
 }*/
+
+#include <string.h>
+
 IP_Address::operator String() const {
 
-	return itos(field[0])+"."+itos(field[1])+"."+itos(field[2])+"."+itos(field[3]);
+	if (type == TYPE_NONE)
+		return "0.0.0.0";
+	if (type == TYPE_IPV4)
+		return itos(field8[0])+"."+itos(field8[1])+"."+itos(field8[2])+"."+itos(field8[3]);
+	else
+		return	String::num_int64(field16[0], 16) +
+				":" + String::num_int64(field16[1], 16) +
+				":" + String::num_int64(field16[2], 16) +
+				":" + String::num_int64(field16[3], 16) +
+				":" + String::num_int64(field16[4], 16) +
+				":" + String::num_int64(field16[5], 16) +
+				":" + String::num_int64(field16[6], 16) +
+				":" + String::num_int64(field16[7], 16);
 }
 
-IP_Address::IP_Address(const String& p_string) {
+static uint16_t _parse_hex(const String& p_string, int p_start) {
+
+	uint16_t ret = 0;
+	for (int i=p_start; i<4; i++) {
+
+		if (i >= p_string.length()) {
+			break;
+		};
+
+		int n = 0;
+		CharType c = p_string[i];
+		if (c >= '0' && c <= '9') {
+
+			n = c - '0';
+		} else if (c >= 'a' && c <= 'f') {
+			n = 10 + (c - 'a');
+		} else if (c >= 'A' && c <= 'F') {
+			n = 10 + (c - 'A');
+		} else {
+			ERR_EXPLAIN("Invalid character in ipv6 address: " + p_string);
+			ERR_FAIL_V(0);
+		};
+		ret = ret << 4;
+		ret += n;
+	};
+
+	return ret;
+};
+
+void IP_Address::_parse_ipv6(const String& p_string) {
+
+	static const int parts_total = 8;
+	int parts[parts_total] = {0};
+	int parts_count = 0;
+	bool part_found = false;
+	bool part_skip = false;
+	bool part_ipv4 = false;
+	int parts_idx = 0;
+
+	for (int i=0; i<p_string.length(); i++) {
+
+		CharType c = p_string[i];
+		if (c == ':') {
+
+			if (i == 0) {
+				continue; // next must be a ":"
+			};
+			if (!part_found) {
+				part_skip = true;
+				parts[parts_idx++] = -1;
+			};
+			part_found = false;
+		} else if (c == '.') {
+
+			part_ipv4 = true;
+
+		} else if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) {
+			if (!part_found) {
+				parts[parts_idx++] = i;
+				part_found = true;
+				++parts_count;
+			};
+		} else {
+
+			ERR_EXPLAIN("Invalid character in IPv6 address: " + p_string);
+			ERR_FAIL();
+		};
+	};
+
+	int parts_extra = 0;
+	if (part_skip) {
+		parts_extra = parts_total - parts_count;
+	};
+
+	int idx = 0;
+	for (int i=0; i<parts_idx; i++) {
 
-	host=0;
-	int slices = p_string.get_slice_count(".");
+		if (parts[i] == -1) {
+
+			for (int j=0; j<parts_extra; j++) {
+				field16[idx++] = 0;
+			};
+			continue;
+		};
+
+		if (part_ipv4 && i == parts_idx - 1) {
+			_parse_ipv4(p_string, parts[i], (uint8_t*)&field16[idx]); // should be the last one
+		} else {
+
+			field16[idx++] = _parse_hex(p_string, parts[i]);
+		};
+	};
+
+};
+
+void IP_Address::_parse_ipv4(const String& p_string, int p_start, uint8_t* p_ret) {
+
+	String ip;
+	if (p_start != 0) {
+		ip = p_string.substr(p_start, p_string.length() - p_start);
+	} else {
+		ip = p_string;
+	};
+
+	int slices = ip.get_slice_count(".");
 	if (slices!=4) {
-		ERR_EXPLAIN("Invalid IP Address String: "+p_string);
+		ERR_EXPLAIN("Invalid IP Address String: "+ip);
 		ERR_FAIL();
 	}
 	for(int i=0;i<4;i++) {
 
-		field[i]=p_string.get_slicec('.',i).to_int();
+		p_ret[i]=ip.get_slicec('.',i).to_int();
 	}
+};
+
+void IP_Address::clear() {
+
+	memset(&field8[0], 0, sizeof(field8));
+};
+
+IP_Address::IP_Address(const String& p_string) {
+
+	clear();
+	if (p_string.find(":") >= 0) {
+
+		_parse_ipv6(p_string);
+		type = TYPE_IPV6;
+	} else {
+
+		_parse_ipv4(p_string, 0, &field8[0]);
+		type = TYPE_IPV4;
+	};
 }
 
-IP_Address::IP_Address(uint8_t p_a,uint8_t p_b,uint8_t p_c,uint8_t p_d) {
+IP_Address::IP_Address(uint32_t p_a,uint32_t p_b,uint32_t p_c,uint32_t p_d, IP_Address::AddrType p_type) {
+
+	type = p_type;
+	memset(&field8[0], 0, sizeof(field8));
+	if (p_type == TYPE_IPV4) {
+		field8[0]=p_a;
+		field8[1]=p_b;
+		field8[2]=p_c;
+		field8[3]=p_d;
+	} else if (type == TYPE_IPV6) {
+
+		field32[0]=p_a;
+		field32[1]=p_b;
+		field32[2]=p_c;
+		field32[3]=p_d;
+	} else {
+		type = TYPE_NONE;
+		ERR_EXPLAIN("Invalid type specified for IP_Address (use TYPE_IPV4 or TYPE_IPV6");
+		ERR_FAIL();
+	};
 
-	field[0]=p_a;
-	field[1]=p_b;
-	field[2]=p_c;
-	field[3]=p_d;
 }
diff --git a/core/io/ip_address.h b/core/io/ip_address.h
index 1292311729..fe13d70611 100644
--- a/core/io/ip_address.h
+++ b/core/io/ip_address.h
@@ -33,22 +33,48 @@
 
 struct IP_Address {
 
+public:
+	enum AddrType {
+		TYPE_NONE = 0,
+		TYPE_IPV4 = 1,
+		TYPE_IPV6 = 2,
+
+		TYPE_ANY = 3,
+	};
+
+	AddrType type;
+
 	union {
-		uint8_t field[4];
-		uint32_t host;
+		uint8_t field8[16];
+		uint16_t field16[8];
+		uint32_t field32[4];
 	};
 
+protected:
+	void _parse_ipv6(const String& p_string);
+	void _parse_ipv4(const String& p_string, int p_start, uint8_t* p_ret);
+
+public:
 	//operator Variant() const;
 	bool operator==(const IP_Address& p_ip) const {
-		return host==p_ip.host;
+		for (int i=0; i<4; i++)
+			if (field32[i] != p_ip.field32[i])
+				return false;
+		return true;
 	}
 	bool operator!=(const IP_Address& p_ip) const {
-		return host!=p_ip.host;
+		for (int i=0; i<4; i++)
+			if (field32[i] != p_ip.field32[i])
+				return true;
+		return false;
 	}
+
+	void clear();
+
 	operator String() const;
 	IP_Address(const String& p_string);
-	IP_Address(uint8_t p_a,uint8_t p_b,uint8_t p_c,uint8_t p_d);
-	IP_Address() { host=0; }
+	IP_Address(uint32_t p_a,uint32_t p_b,uint32_t p_c,uint32_t p_d, AddrType p_type=TYPE_IPV4);
+	IP_Address() { clear(); type=TYPE_NONE; }
 };
 
 
diff --git a/core/io/packet_peer_udp.cpp b/core/io/packet_peer_udp.cpp
index efc619e414..018dc77d91 100644
--- a/core/io/packet_peer_udp.cpp
+++ b/core/io/packet_peer_udp.cpp
@@ -29,14 +29,9 @@
 #include "packet_peer_udp.h"
 #include "io/ip.h"
 
-
 PacketPeerUDP* (*PacketPeerUDP::_create)()=NULL;
 
-int PacketPeerUDP::_get_packet_address() const {
-
-	IP_Address ip = get_packet_address();
-	return ip.host;
-}
+VARIANT_ENUM_CAST(IP_Address::AddrType);
 
 String PacketPeerUDP::_get_packet_ip() const {
 
@@ -65,7 +60,7 @@ void PacketPeerUDP::_bind_methods() {
 	ObjectTypeDB::bind_method(_MD("wait:Error"),&PacketPeerUDP::wait);
 	ObjectTypeDB::bind_method(_MD("is_listening"),&PacketPeerUDP::is_listening);
 	ObjectTypeDB::bind_method(_MD("get_packet_ip"),&PacketPeerUDP::_get_packet_ip);
-	ObjectTypeDB::bind_method(_MD("get_packet_address"),&PacketPeerUDP::_get_packet_address);
+	//ObjectTypeDB::bind_method(_MD("get_packet_address"),&PacketPeerUDP::_get_packet_address);
 	ObjectTypeDB::bind_method(_MD("get_packet_port"),&PacketPeerUDP::get_packet_port);
 	ObjectTypeDB::bind_method(_MD("set_send_address","host","port"),&PacketPeerUDP::_set_send_address);
 
diff --git a/core/io/packet_peer_udp.h b/core/io/packet_peer_udp.h
index 70d92834fc..c0806a9e6a 100644
--- a/core/io/packet_peer_udp.h
+++ b/core/io/packet_peer_udp.h
@@ -40,14 +40,13 @@ protected:
 	static PacketPeerUDP* (*_create)();
 	static void _bind_methods();
 
-	int _get_packet_address() const;
 	String _get_packet_ip() const;
 
 	virtual Error _set_send_address(const String& p_address,int p_port);
 
 public:
 
-	virtual Error listen(int p_port,int p_recv_buffer_size=65536)=0;
+	virtual Error listen(int p_port, IP_Address::AddrType p_address_type = IP_Address::TYPE_IPV4, int p_recv_buffer_size=65536)=0;
 	virtual void close()=0;
 	virtual Error wait()=0;
 	virtual bool is_listening() const=0;
diff --git a/core/io/tcp_server.cpp b/core/io/tcp_server.cpp
index 274d20a48a..53d6e900f3 100644
--- a/core/io/tcp_server.cpp
+++ b/core/io/tcp_server.cpp
@@ -30,6 +30,8 @@
 
 TCP_Server* (*TCP_Server::_create)()=NULL;
 
+VARIANT_ENUM_CAST(IP_Address::AddrType);
+
 Ref<TCP_Server> TCP_Server::create_ref() {
 
 	if (!_create)
@@ -44,19 +46,19 @@ TCP_Server* TCP_Server::create() {
 	return _create();
 }
 
-Error TCP_Server::_listen(uint16_t p_port,DVector<String> p_accepted_hosts) {
+Error TCP_Server::_listen(uint16_t p_port, IP_Address::AddrType p_type, DVector<String> p_accepted_hosts) {
 
 	List<String> hosts;
 	for(int i=0;i<p_accepted_hosts.size();i++)
 		hosts.push_back(p_accepted_hosts.get(i));
 
-	return listen(p_port,hosts.size()?&hosts:NULL);
+	return listen(p_port,p_type, hosts.size()?&hosts:NULL);
 
 }
 
 void TCP_Server::_bind_methods() {
 
-	ObjectTypeDB::bind_method(_MD("listen","port","accepted_hosts"),&TCP_Server::_listen,DEFVAL(DVector<String>()));
+	ObjectTypeDB::bind_method(_MD("listen","port","accepted_hosts"),&TCP_Server::_listen,DEFVAL(IP_Address::TYPE_IPV4), DEFVAL(DVector<String>()));
 	ObjectTypeDB::bind_method(_MD("is_connection_available"),&TCP_Server::is_connection_available);
 	ObjectTypeDB::bind_method(_MD("take_connection"),&TCP_Server::take_connection);
 	ObjectTypeDB::bind_method(_MD("stop"),&TCP_Server::stop);
diff --git a/core/io/tcp_server.h b/core/io/tcp_server.h
index 512a7e640a..883a3ef2f6 100644
--- a/core/io/tcp_server.h
+++ b/core/io/tcp_server.h
@@ -41,11 +41,11 @@ protected:
 	static TCP_Server* (*_create)();
 
 	//bind helper
-	Error _listen(uint16_t p_port,DVector<String> p_accepted_hosts=DVector<String>());
+	Error _listen(uint16_t p_port, IP_Address::AddrType p_type = IP_Address::TYPE_IPV4 ,DVector<String> p_accepted_hosts=DVector<String>());
 	static void _bind_methods();
 public:
 
-	virtual Error listen(uint16_t p_port,const List<String> *p_accepted_hosts=NULL)=0;
+	virtual Error listen(uint16_t p_port, IP_Address::AddrType p_type = IP_Address::TYPE_IPV4, const List<String> *p_accepted_hosts=NULL)=0;
 	virtual bool is_connection_available() const=0;
 	virtual Ref<StreamPeerTCP> take_connection()=0;
 
diff --git a/core/variant_call.cpp b/core/variant_call.cpp
index 51cd4c2399..9b6fa27cf4 100644
--- a/core/variant_call.cpp
+++ b/core/variant_call.cpp
@@ -1820,6 +1820,11 @@ _VariantCall::addfunc(Variant::m_vtype,Variant::m_ret,_SCS(#m_method),VCALL(m_cl
 	_VariantCall::add_constant(Variant::IMAGE,"INTERPOLATE_NEAREST",Image::INTERPOLATE_NEAREST);
 	_VariantCall::add_constant(Variant::IMAGE,"INTERPOLATE_BILINEAR",Image::INTERPOLATE_BILINEAR);
 	_VariantCall::add_constant(Variant::IMAGE,"INTERPOLATE_CUBIC",Image::INTERPOLATE_CUBIC);
+
+	_VariantCall::add_constant(Variant::INT, "IP_TYPE_NONE", IP_Address::TYPE_NONE);
+	_VariantCall::add_constant(Variant::INT, "IP_TYPE_IPV4", IP_Address::TYPE_IPV4);
+	_VariantCall::add_constant(Variant::INT, "IP_TYPE_IPV6", IP_Address::TYPE_IPV6);
+	_VariantCall::add_constant(Variant::INT, "IP_TYPE_ANY", IP_Address::TYPE_ANY);
 }
 
 void unregister_variant_methods() {
diff --git a/drivers/unix/ip_unix.cpp b/drivers/unix/ip_unix.cpp
index 08a8c19583..6294f57b03 100644
--- a/drivers/unix/ip_unix.cpp
+++ b/drivers/unix/ip_unix.cpp
@@ -30,6 +30,7 @@
 
 #if defined(UNIX_ENABLED) || defined(WINDOWS_ENABLED)
 
+#include <string.h>
 
 #ifdef WINDOWS_ENABLED
  #ifdef WINRT_ENABLED
@@ -62,16 +63,51 @@
  #endif
 #endif
 
-IP_Address IP_Unix::_resolve_hostname(const String& p_hostname) {
+static IP_Address _sockaddr2ip(struct sockaddr* p_addr) {
 
-	struct hostent *he;
-	if ((he=gethostbyname(p_hostname.utf8().get_data())) == NULL) {  // get the host info
-		ERR_PRINT("gethostbyname failed!");
-		return IP_Address();
-	}
 	IP_Address ip;
+	if (p_addr->sa_family == AF_INET) {
+		struct sockaddr_in* addr = (struct sockaddr_in*)p_addr;
+		ip.field32[0] = ntohl(addr->sin_addr.s_addr);
+		ip.type = IP_Address::TYPE_IPV4;
+	} else {
+		struct sockaddr_in6* addr6 = (struct sockaddr_in6*)p_addr;
+		for (int i=0; i<16; i++)
+			ip.field8[i] = addr6->sin6_addr.s6_addr[i];
+		ip.type = IP_Address::TYPE_IPV6;
+	};
+
+	return ip;
+};
+
+IP_Address IP_Unix::_resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type) {
 
-	ip.host= *((unsigned long*)he->h_addr);
+	struct addrinfo hints;
+	struct addrinfo* result;
+
+	memset(&hints, 0, sizeof(struct addrinfo));
+	if (p_type == IP_Address::TYPE_IPV4) {
+		hints.ai_family = AF_INET;
+	} else if (p_type == IP_Address::TYPE_IPV6) {
+		hints.ai_family = AF_INET6;
+	} else {
+		hints.ai_family = AF_UNSPEC;
+	};
+
+	int s = getaddrinfo(p_hostname.utf8().get_data(), NULL, &hints, &result);
+	if (s != 0) {
+		ERR_PRINT("getaddrinfo failed!");
+		return IP_Address();
+	};
+
+	if (result == NULL || result->ai_addr == NULL) {
+		ERR_PRINT("Invalid response from getaddrinfo");
+		return IP_Address();
+	};
+
+	IP_Address ip = _sockaddr2ip(result->ai_addr);
+
+	freeaddrinfo(result);
 
 	return ip;
 
@@ -90,10 +126,9 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
 
 	for (int i = 0; i < hostnames->Size; i++) {
 
-		if (hostnames->GetAt(i)->Type == HostNameType::Ipv4 && hostnames->GetAt(i)->IPInformation != nullptr) {
+		if (hostnames->GetAt(i)->Type == HostNameType::Ipv4 || hostnames->GetAt(i)->Type == HostNameType::Ipv6 && hostnames->GetAt(i)->IPInformation != nullptr) {
 
 			r_addresses->push_back(IP_Address(String(hostnames->GetAt(i)->CanonicalName->Data())));
-
 		}
 	}
 
@@ -108,7 +143,7 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
 	while (true) {
 
 		addrs = (IP_ADAPTER_ADDRESSES*)memalloc(buf_size);
-		int err = GetAdaptersAddresses(AF_INET, GAA_FLAG_SKIP_ANYCAST |
+		int err = GetAdaptersAddresses(AF_UNSPEC, GAA_FLAG_SKIP_ANYCAST |
 									   GAA_FLAG_SKIP_MULTICAST |
 									   GAA_FLAG_SKIP_DNS_SERVER |
 									   GAA_FLAG_SKIP_FRIENDLY_NAME,
@@ -134,14 +169,23 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
 		IP_ADAPTER_UNICAST_ADDRESS* address = adapter->FirstUnicastAddress;
 		while (address != NULL) {
 
-			char addr_chr[INET_ADDRSTRLEN];
-			SOCKADDR_IN* ipv4 = reinterpret_cast<SOCKADDR_IN*>(address->Address.lpSockaddr);
-
 			IP_Address ip;
-			ip.host= *((unsigned long*)&ipv4->sin_addr);
 
+			if (address->Address.lpSockaddr->sa_family == AF_INET) {
+
+				SOCKADDR_IN* ipv4 = reinterpret_cast<SOCKADDR_IN*>(address->Address.lpSockaddr);
+
+				ip.field32[0] = *((unsigned long*)&ipv4->sin_addr);
+				ip.type = IP_Address::TYPE_IPV4;
+			} else { // ipv6
+
+				SOCKADDR_IN6* ipv6 = reinterpret_cast<SOCKADDR_IN6*>(address->Address.lpSockaddr);
+				for (int i=0; i<16; i++) {
+					ip.field8[i] = ipv6->sin6_addr.s6_addr[i];
+				};
+				ip.type = IP_Address::TYPE_IPV6;
+			};
 
-			//inet_ntop(AF_INET, &ipv4->sin_addr, addr_chr, INET_ADDRSTRLEN);
 
 			r_addresses->push_back(ip);
 
@@ -167,20 +211,9 @@ void IP_Unix::get_local_addresses(List<IP_Address> *r_addresses) const {
 	for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
 		if (!ifa->ifa_addr)
 			continue;
-		if (ifa ->ifa_addr->sa_family==AF_INET) { // check it is IP4
-			// is a valid IP4 Address
 
-			IP_Address ip;
-			ip.host= *((unsigned long*)&((struct sockaddr_in *)ifa->ifa_addr)->sin_addr);
-
-			r_addresses->push_back(ip);
-		}/* else if (ifa->ifa_addr->sa_family==AF_INET6) { // check it is IP6
-			// is a valid IP6 Address
-			tmpAddrPtr=&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
-			char addressBuffer[INET6_ADDRSTRLEN];
-			inet_ntop(AF_INET6, tmpAddrPtr, addressBuffer, INET6_ADDRSTRLEN);
-			printf("%s IP Address %s\n", ifa->ifa_name, addressBuffer);
-		} */
+		IP_Address ip = _sockaddr2ip(ifa->ifa_addr);
+		r_addresses->push_back(ip);
 	}
 
 	if (ifAddrStruct!=NULL) freeifaddrs(ifAddrStruct);
diff --git a/drivers/unix/ip_unix.h b/drivers/unix/ip_unix.h
index c0034c9a3a..d198a330e7 100644
--- a/drivers/unix/ip_unix.h
+++ b/drivers/unix/ip_unix.h
@@ -36,7 +36,7 @@
 class IP_Unix : public IP {
 	OBJ_TYPE(IP_Unix, IP);
 
-	virtual IP_Address _resolve_hostname(const String& p_hostname);
+	virtual IP_Address _resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type);
 
 	static IP* _create_unix();
 public:
diff --git a/drivers/unix/packet_peer_udp_posix.cpp b/drivers/unix/packet_peer_udp_posix.cpp
index 0201a85651..cab2b2bbb9 100644
--- a/drivers/unix/packet_peer_udp_posix.cpp
+++ b/drivers/unix/packet_peer_udp_posix.cpp
@@ -73,7 +73,15 @@ Error PacketPeerUDPPosix::get_packet(const uint8_t **r_buffer,int &r_buffer_size
 		return ERR_UNAVAILABLE;
 
 	uint32_t size;
-	rb.read((uint8_t*)&packet_ip.host,4,true);
+	uint8_t type;
+	rb.read(&type, 1, true);
+	if (type == IP_Address::TYPE_IPV4) {
+		rb.read((uint8_t*)&packet_ip.field8,4,true);
+		packet_ip.type = IP_Address::TYPE_IPV4;
+	} else {
+		rb.read((uint8_t*)&packet_ip.field8,16,true);
+		packet_ip.type = IP_Address::TYPE_IPV6;
+	};
 	rb.read((uint8_t*)&packet_port,4,true);
 	rb.read((uint8_t*)&size,4,true);
 	rb.read(packet_buffer,size,true);
@@ -85,12 +93,22 @@ Error PacketPeerUDPPosix::get_packet(const uint8_t **r_buffer,int &r_buffer_size
 }
 Error PacketPeerUDPPosix::put_packet(const uint8_t *p_buffer,int p_buffer_size){
 
-	int sock = _get_socket();
+	ERR_FAIL_COND_V(peer_addr.type == IP_Address::TYPE_NONE, ERR_UNCONFIGURED);
+
+	int sock = _get_socket(peer_addr.type);
 	ERR_FAIL_COND_V( sock == -1, FAILED );
-	struct sockaddr_in addr;
-	addr.sin_family = AF_INET;
-	addr.sin_port = htons(peer_port);
-	addr.sin_addr = *((struct in_addr*)&peer_addr.host);
+	struct sockaddr_storage addr;
+	if (peer_addr.type == IP_Address::TYPE_IPV4) {
+		struct sockaddr_in* addr_in = (struct sockaddr_in*)&addr;
+		addr_in->sin_family = AF_INET;
+		addr_in->sin_port = htons(peer_port);
+		addr_in->sin_addr = *((struct in_addr*)&peer_addr.field32[0]);
+	} else {
+		struct sockaddr_in6* addr_in6 = (struct sockaddr_in6*)&addr;
+		addr_in6->sin6_family = AF_INET;
+		addr_in6->sin6_port = htons(peer_port);
+		copymem(&addr_in6->sin6_addr.s6_addr, peer_addr.field8, 16);
+	};
 
 	errno = 0;
 	int err;
@@ -110,17 +128,32 @@ int PacketPeerUDPPosix::get_max_packet_size() const{
 	return 512; // uhm maybe not
 }
 
-Error PacketPeerUDPPosix::listen(int p_port, int p_recv_buffer_size){
+Error PacketPeerUDPPosix::listen(int p_port, IP_Address::AddrType p_address_type, int p_recv_buffer_size) {
+
+	ERR_FAIL_COND_V(p_address_type != IP_Address::TYPE_IPV4 && p_address_type != IP_Address::TYPE_IPV6, ERR_INVALID_PARAMETER);
 
 	close();
-	int sock = _get_socket();
+	int sock = _get_socket(p_address_type);
 	if (sock == -1 )
 		return ERR_CANT_CREATE;
-	sockaddr_in addr = {0};
-	addr.sin_family = AF_INET;
-	addr.sin_port = htons(p_port);
-	addr.sin_addr.s_addr = INADDR_ANY;
-	if (bind(sock, (struct sockaddr*)&addr, sizeof(sockaddr_in)) == -1 ) {
+
+	sockaddr_storage addr = {0};
+
+	if (p_address_type == IP_Address::TYPE_IPV4) {
+		struct sockaddr_in* addr4 = (struct sockaddr_in*)&addr;
+		addr4->sin_family = AF_INET;
+		addr4->sin_port = htons(p_port);
+		addr4->sin_addr.s_addr = INADDR_ANY;
+	} else {
+
+		struct sockaddr_in6* addr6 = (struct sockaddr_in6*)&addr;
+
+		addr6->sin6_family = AF_INET6;
+		addr6->sin6_port = htons(p_port);
+		addr6->sin6_addr = in6addr_any;
+	};
+
+	if (bind(sock, (struct sockaddr*)&addr, sizeof(sockaddr_storage)) == -1 ) {
 		close();
 		return ERR_UNAVAILABLE;
 	}
@@ -145,16 +178,40 @@ Error PacketPeerUDPPosix::wait() {
 
 Error PacketPeerUDPPosix::_poll(bool p_wait) {
 
-	struct sockaddr_in from = {0};
-	socklen_t len = sizeof(struct sockaddr_in);
+	struct sockaddr_storage from = {0};
+	socklen_t len = sizeof(struct sockaddr_storage);
 	int ret;
 	while ( (ret = recvfrom(sockfd, recv_buffer, MIN((int)sizeof(recv_buffer),MAX(rb.space_left()-12, 0)), p_wait?0:MSG_DONTWAIT, (struct sockaddr*)&from, &len)) > 0) {
-		rb.write((uint8_t*)&from.sin_addr, 4);
-		uint32_t port = ntohs(from.sin_port);
+
+		uint32_t port = 0;
+
+		if (from.ss_family == AF_INET) {
+			uint8_t type = (uint8_t)IP_Address::TYPE_IPV4;
+			rb.write(&type, 1);
+			struct sockaddr_in* sin_from = (struct sockaddr_in*)&from;
+			rb.write((uint8_t*)&sin_from->sin_addr, 4);
+			port = sin_from->sin_port;
+
+		} else if (from.ss_family == AF_INET6) {
+
+			uint8_t type = (uint8_t)IP_Address::TYPE_IPV6;
+			rb.write(&type, 1);
+
+			struct sockaddr_in6* s6_from = (struct sockaddr_in6*)&from;
+			rb.write((uint8_t*)&s6_from->sin6_addr, 16);
+
+			port = s6_from->sin6_port;
+
+		} else {
+			// WARN_PRINT("Ignoring packet with unknown address family");
+			uint8_t type = (uint8_t)IP_Address::TYPE_NONE;
+			rb.write(&type, 1);
+		};
+
 		rb.write((uint8_t*)&port, 4);
 		rb.write((uint8_t*)&ret, 4);
 		rb.write(recv_buffer, ret);
-		len = sizeof(struct sockaddr_in);
+
 		++queue_count;
 	};
 
@@ -182,12 +239,14 @@ int PacketPeerUDPPosix::get_packet_port() const{
 	return packet_port;
 }
 
-int PacketPeerUDPPosix::_get_socket() {
+int PacketPeerUDPPosix::_get_socket(IP_Address::AddrType p_type) {
 
 	if (sockfd != -1)
 		return sockfd;
 
-	sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	int family = p_type == IP_Address::TYPE_IPV6 ? AF_INET6 : AF_INET;
+
+	sockfd = socket(family, SOCK_DGRAM, IPPROTO_UDP);
 	ERR_FAIL_COND_V( sockfd == -1, -1 );
 	//fcntl(sockfd, F_SETFL, O_NONBLOCK);
 
diff --git a/drivers/unix/packet_peer_udp_posix.h b/drivers/unix/packet_peer_udp_posix.h
index a11282e5d6..13b6969e53 100644
--- a/drivers/unix/packet_peer_udp_posix.h
+++ b/drivers/unix/packet_peer_udp_posix.h
@@ -44,15 +44,15 @@ class PacketPeerUDPPosix : public PacketPeerUDP {
 	mutable RingBuffer<uint8_t> rb;
 	uint8_t recv_buffer[PACKET_BUFFER_SIZE];
 	mutable uint8_t packet_buffer[PACKET_BUFFER_SIZE];
-	IP_Address packet_ip;
-	int packet_port;
+	mutable IP_Address packet_ip;
+	mutable int packet_port;
 	mutable int queue_count;
 	int sockfd;
 
 	IP_Address peer_addr;
 	int peer_port;
 
-	_FORCE_INLINE_ int _get_socket();
+	_FORCE_INLINE_ int _get_socket(IP_Address::AddrType p_type);
 
 	static PacketPeerUDP* _create();
 	virtual Error _poll(bool p_block);
@@ -65,7 +65,7 @@ public:
 
 	virtual int get_max_packet_size() const;
 
-	virtual Error listen(int p_port,int p_recv_buffer_size=65536);
+	virtual Error listen(int p_port, IP_Address::AddrType p_address_type, int p_recv_buffer_size=65536);
 	virtual void close();
 	virtual Error wait();
 	virtual bool is_listening() const;
diff --git a/drivers/unix/stream_peer_tcp_posix.cpp b/drivers/unix/stream_peer_tcp_posix.cpp
index 45a4b934c1..bb672cef31 100644
--- a/drivers/unix/stream_peer_tcp_posix.cpp
+++ b/drivers/unix/stream_peer_tcp_posix.cpp
@@ -61,12 +61,23 @@
 	#define MSG_NOSIGNAL    SO_NOSIGPIPE
 #endif
 
-static void set_addr_in(struct sockaddr_in& their_addr, const IP_Address& p_host, uint16_t p_port) {
+static void set_addr_in(struct sockaddr_storage& their_addr, const IP_Address& p_host, uint16_t p_port) {
 
-	their_addr.sin_family = AF_INET;    // host byte order
-	their_addr.sin_port = htons(p_port);  // short, network byte order
-	their_addr.sin_addr = *((struct in_addr*)&p_host.host);
-	memset(&(their_addr.sin_zero), '\0', 8);
+	memset(&their_addr, 0, sizeof(struct sockaddr_storage));
+	if (p_host.type == IP_Address::TYPE_IPV6) {
+
+		struct sockaddr_in6* addr6 = (struct sockaddr_in6*)&their_addr;
+		addr6->sin6_family = AF_INET6;
+		addr6->sin6_port = htons(p_port);
+		copymem(&addr6->sin6_addr.s6_addr, p_host.field8, 16);
+
+	} else {
+
+		struct sockaddr_in* addr4 = (struct sockaddr_in*)&their_addr;
+		addr4->sin_family = AF_INET;    // host byte order
+		addr4->sin_port = htons(p_port);  // short, network byte order
+		addr4->sin_addr = *((struct in_addr*)&p_host.field32[0]);
+	};
 };
 
 StreamPeerTCP* StreamPeerTCPPosix::_create() {
@@ -103,9 +114,9 @@ Error StreamPeerTCPPosix::_poll_connection(bool p_block) const {
 		_block(sockfd, false, true);
 	};
 
-	struct sockaddr_in their_addr;
+	struct sockaddr_storage their_addr;
 	set_addr_in(their_addr, peer_host, peer_port);
-	if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1) {
+	if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(their_addr)) == -1) {
 
 		if (errno == EISCONN) {
 			status = STATUS_CONNECTED;
@@ -140,9 +151,10 @@ void StreamPeerTCPPosix::set_socket(int p_sockfd, IP_Address p_host, int p_port)
 
 Error StreamPeerTCPPosix::connect(const IP_Address& p_host, uint16_t p_port) {
 
-	ERR_FAIL_COND_V( p_host.host == 0, ERR_INVALID_PARAMETER);
+	ERR_FAIL_COND_V( p_host.type == IP_Address::TYPE_NONE, ERR_INVALID_PARAMETER);
 
-	if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
+	int family = p_host.type == IP_Address::TYPE_IPV6 ? AF_INET6 : AF_INET;
+	if ((sockfd = socket(family, SOCK_STREAM, 0)) == -1) {
 		ERR_PRINT("Socket creation failed!");
 		disconnect();
 		//perror("socket");
@@ -156,11 +168,11 @@ Error StreamPeerTCPPosix::connect(const IP_Address& p_host, uint16_t p_port) {
 	ioctl(sockfd, FIONBIO, &bval);
 #endif
 
-	struct sockaddr_in their_addr;
+	struct sockaddr_storage their_addr;
 	set_addr_in(their_addr, p_host, p_port);
 
 	errno = 0;
-	if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1 && errno != EINPROGRESS) {
+	if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(their_addr)) == -1 && errno != EINPROGRESS) {
 
 		ERR_PRINT("Connection to remote host failed!");
 		disconnect();
diff --git a/drivers/unix/tcp_server_posix.cpp b/drivers/unix/tcp_server_posix.cpp
index c67bb51334..03312a7538 100644
--- a/drivers/unix/tcp_server_posix.cpp
+++ b/drivers/unix/tcp_server_posix.cpp
@@ -55,6 +55,7 @@
 #include <netinet/in.h>
 #include <sys/socket.h>
 #include <assert.h>
+
 TCP_Server* TCPServerPosix::_create() {
 
 	return memnew(TCPServerPosix);
@@ -65,10 +66,11 @@ void TCPServerPosix::make_default() {
 	TCP_Server::_create = TCPServerPosix::_create;
 };
 
-Error TCPServerPosix::listen(uint16_t p_port,const List<String> *p_accepted_hosts) {
+Error TCPServerPosix::listen(uint16_t p_port, IP_Address::AddrType p_type, const List<String> *p_accepted_hosts) {
 
 	int sockfd;
-	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+	int family = p_type == IP_Address::TYPE_IPV6 ? AF_INET6 : AF_INET;
+	sockfd = socket(family, SOCK_STREAM, 0);
 	ERR_FAIL_COND_V(sockfd == -1, FAILED);
 #ifndef NO_FCNTL
 	fcntl(sockfd, F_SETFL, O_NONBLOCK);
@@ -82,13 +84,22 @@ Error TCPServerPosix::listen(uint16_t p_port,const List<String> *p_accepted_host
 		WARN_PRINT("REUSEADDR failed!")
 	}
 
-	struct sockaddr_in my_addr;
-	my_addr.sin_family = AF_INET;         // host byte order
-	my_addr.sin_port = htons(p_port);     // short, network byte order
-	my_addr.sin_addr.s_addr = INADDR_ANY; // automatically fill with my IP TODO: use p_accepted_hosts
-	memset(my_addr.sin_zero, '\0', sizeof my_addr.sin_zero);
+	sockaddr_storage addr = {0};
+	if (p_type == IP_Address::TYPE_IPV4) {
+		struct sockaddr_in* addr4 = (struct sockaddr_in*)&addr;
+		addr4->sin_family = AF_INET;
+		addr4->sin_port = htons(p_port);
+		addr4->sin_addr.s_addr = INADDR_ANY;
+	} else {
+
+		struct sockaddr_in6* addr6 = (struct sockaddr_in6*)&addr;
+		addr6->sin6_family = AF_INET6;
+		addr6->sin6_port = htons(p_port);
+		addr6->sin6_addr = in6addr_any;
+	};
+	// automatically fill with my IP TODO: use p_accepted_hosts
 
-	if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof my_addr) != -1) {
+	if (bind(sockfd, (struct sockaddr *)&addr, sizeof addr) != -1) {
 
 		if (::listen(sockfd, 1) == -1) {
 
@@ -136,9 +147,9 @@ Ref<StreamPeerTCP> TCPServerPosix::take_connection() {
 		return Ref<StreamPeerTCP>();
 	};
 
-	struct sockaddr_in their_addr;
-	socklen_t sin_size = sizeof(their_addr);
-	int fd = accept(listen_sockfd, (struct sockaddr *)&their_addr, &sin_size);
+	struct sockaddr_storage their_addr;
+	socklen_t size = sizeof(their_addr);
+	int fd = accept(listen_sockfd, (struct sockaddr *)&their_addr, &size);
 	ERR_FAIL_COND_V(fd == -1, Ref<StreamPeerTCP>());
 #ifndef NO_FCNTL
 	fcntl(fd, F_SETFL, O_NONBLOCK);
@@ -149,8 +160,23 @@ Ref<StreamPeerTCP> TCPServerPosix::take_connection() {
 
 	Ref<StreamPeerTCPPosix> conn = memnew(StreamPeerTCPPosix);
 	IP_Address ip;
-	ip.host = (uint32_t)their_addr.sin_addr.s_addr;
-	conn->set_socket(fd, ip, ntohs(their_addr.sin_port));
+
+	if (their_addr.ss_family == AF_INET) {
+		ip.type = IP_Address::TYPE_IPV4;
+
+		struct sockaddr_in* addr4 = (struct sockaddr_in*)&their_addr;
+		ip.field32[0] = (uint32_t)addr4->sin_addr.s_addr;
+		conn->set_socket(fd, ip, ntohs(addr4->sin_port));
+
+	} else if (their_addr.ss_family == AF_INET6) {
+
+		ip.type = IP_Address::TYPE_IPV6;
+
+		struct sockaddr_in6* addr6 = (struct sockaddr_in6*)&their_addr;
+		copymem(&addr6->sin6_addr.s6_addr, ip.field8, 16);
+
+		conn->set_socket(fd, ip, ntohs(addr6->sin6_port));
+	};
 
 	return conn;
 };
diff --git a/drivers/unix/tcp_server_posix.h b/drivers/unix/tcp_server_posix.h
index 570bcaab12..134ec494cb 100644
--- a/drivers/unix/tcp_server_posix.h
+++ b/drivers/unix/tcp_server_posix.h
@@ -40,7 +40,7 @@ class TCPServerPosix : public TCP_Server {
 
 public:
 
-	virtual Error listen(uint16_t p_port,const List<String> *p_accepted_hosts=NULL);
+	virtual Error listen(uint16_t p_port, IP_Address::AddrType p_type = IP_Address::TYPE_IPV4, const List<String> *p_accepted_hosts=NULL);
 	virtual bool is_connection_available() const;
 	virtual Ref<StreamPeerTCP> take_connection();
 
diff --git a/modules/enet/networked_multiplayer_enet.cpp b/modules/enet/networked_multiplayer_enet.cpp
index b4dfa9c62e..a82283591d 100644
--- a/modules/enet/networked_multiplayer_enet.cpp
+++ b/modules/enet/networked_multiplayer_enet.cpp
@@ -77,6 +77,7 @@ Error NetworkedMultiplayerENet::create_server(int p_port, int p_max_clients, int
 Error NetworkedMultiplayerENet::create_client(const IP_Address& p_ip, int p_port, int p_in_bandwidth, int p_out_bandwidth){
 
 	ERR_FAIL_COND_V(active,ERR_ALREADY_IN_USE);
+	ERR_FAIL_COND_V(p_ip.type != IP_Address::TYPE_IPV4, ERR_INVALID_PARAMETER);
 
 	host = enet_host_create (NULL /* create a client host */,
 		    1 /* only allow 1 outgoing connection */,
@@ -90,7 +91,7 @@ Error NetworkedMultiplayerENet::create_client(const IP_Address& p_ip, int p_port
 	_setup_compressor();
 
 	ENetAddress address;
-	address.host=p_ip.host;
+	address.host=p_ip.field32[0];
 	address.port=p_port;
 
 	//enet_address_set_host (& address, "localhost");
@@ -149,7 +150,8 @@ void NetworkedMultiplayerENet::poll(){
 				}
 
 				IP_Address ip;
-				ip.host=event.peer -> address.host;
+				ip.type = IP_Address::TYPE_IPV4;
+				ip.field32[0]=event.peer -> address.host;
 
 				int *new_id = memnew( int );
 				*new_id = event.data;
@@ -683,5 +685,6 @@ NetworkedMultiplayerENet::~NetworkedMultiplayerENet(){
 // sets IP for ENet to bind when using create_server
 // if no IP is set, then ENet bind to ENET_HOST_ANY
 void NetworkedMultiplayerENet::set_bind_ip(const IP_Address& p_ip){
-	bind_ip=p_ip.host;
+	ERR_FAIL_COND(p_ip.type != IP_Address::TYPE_IPV4);
+	bind_ip=p_ip.field32[0];
 }