source: code/branches/ipv6/src/external/enet/patches/patch @ 7377

diff --git a/host.c b/host.c
index 8bb2433..85dfa3c 100644
--- a/host.c
+++ b/host.c
@@ -48,11 +48,15 @@ enet_host_create (const ENetAddress * address, size_t peerCount, size_t channelL
     }
     memset (host -> peers, 0, peerCount * sizeof (ENetPeer));
 
-    host -> socket = enet_socket_create (ENET_SOCKET_TYPE_DATAGRAM);
-    if (host -> socket == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind (host -> socket, address) < 0))
+
+    // FIXME: check address for ANY_ADRESS if not only bind to specific protocol
+    // FIXME: allow to fail one of the two protocols
+    /* IPv4 */
+    host -> socket4 = enet_socket_create (ENET_SOCKET_TYPE_DATAGRAM, ENET_IPV4);
+    if (host -> socket4 == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind (host -> socket4, address, ENET_IPV4) < 0))
     {
-       if (host -> socket != ENET_SOCKET_NULL)
-         enet_socket_destroy (host -> socket);
+       if (host -> socket4 != ENET_SOCKET_NULL)
+         enet_socket_destroy (host -> socket4);
 
        enet_free (host -> peers);
        enet_free (host);
@@ -60,10 +64,32 @@ enet_host_create (const ENetAddress * address, size_t peerCount, size_t channelL
        return NULL;
     }
 
-    enet_socket_set_option (host -> socket, ENET_SOCKOPT_NONBLOCK, 1);
-    enet_socket_set_option (host -> socket, ENET_SOCKOPT_BROADCAST, 1);
-    enet_socket_set_option (host -> socket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE);
-    enet_socket_set_option (host -> socket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE);
+    enet_socket_set_option (host -> socket4, ENET_SOCKOPT_NONBLOCK, 1);
+    enet_socket_set_option (host -> socket4, ENET_SOCKOPT_BROADCAST, 1);
+    enet_socket_set_option (host -> socket4, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE);
+    enet_socket_set_option (host -> socket4, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE);
+
+    /* IPv6 */
+    host -> socket6 = enet_socket_create (ENET_SOCKET_TYPE_DATAGRAM, ENET_IPV6);
+    if (host -> socket6 == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind (host -> socket6, address, ENET_IPV6) < 0))
+    {
+       if (host -> socket6 != ENET_SOCKET_NULL)
+       {
+           enet_socket_destroy (host -> socket4);
+           enet_socket_destroy (host -> socket6);
+       }
+
+       enet_free (host -> peers);
+       enet_free (host);
+
+       return NULL;
+    }
+
+    enet_socket_set_option (host -> socket6, ENET_SOCKOPT_NONBLOCK, 1);
+    enet_socket_set_option (host -> socket6, ENET_SOCKOPT_BROADCAST, 1);
+    enet_socket_set_option (host -> socket6, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE);
+    enet_socket_set_option (host -> socket6, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE);
+
 
     if (address != NULL)
       host -> address = * address;
@@ -133,7 +159,8 @@ enet_host_destroy (ENetHost * host)
 {
     ENetPeer * currentPeer;
 
-    enet_socket_destroy (host -> socket);
+    enet_socket_destroy (host -> socket4);
+    enet_socket_destroy (host -> socket6);
 
     for (currentPeer = host -> peers;
          currentPeer < & host -> peers [host -> peerCount];
diff --git a/include/enet/enet.h b/include/enet/enet.h
index 2f656d6..39cf93e 100644
--- a/include/enet/enet.h
+++ b/include/enet/enet.h
@@ -53,13 +53,16 @@ typedef enum _ENetSocketOption
    ENET_SOCKOPT_REUSEADDR = 5
 } ENetSocketOption;
 
-enum
+typedef struct _ENetHostAddress
 {
-   ENET_HOST_ANY       = 0,            /**< specifies the default server host */
-   ENET_HOST_BROADCAST = 0xFFFFFFFF,   /**< specifies a subnet-wide broadcast */
+   enet_uint8 addr[16];
+} ENetHostAddress;
 
-   ENET_PORT_ANY       = 0             /**< specifies that a port should be automatically chosen */
-};
+extern const ENetHostAddress ENET_HOST_ANY;          /**< specifies the default server host */
+extern const ENetHostAddress ENET_IPV4MAPPED_PREFIX; /**< specifies the IPv4-mapped IPv6 prefix */
+extern const ENetHostAddress ENET_HOST_BROADCAST;    /**< specifies a IPv4 subnet-wide broadcast */
+#define ENET_IPV4MAPPED_PREFIX_LEN 12                /**< specifies the length of the IPv4-mapped IPv6 prefix */
+#define ENET_PORT_ANY 0                              /**< specifies that a port should be automatically chosen */
 
 /**
  * Portable internet address structure. 
@@ -73,11 +76,22 @@ enum
  */
 typedef struct _ENetAddress
 {
-   enet_uint32 host;
+   ENetHostAddress host;
+   enet_uint32 scopeID; //FIXME: this is of different size on Windows
    enet_uint16 port;
 } ENetAddress;
 
 /**
+ * The address family type.
+ */
+typedef enum _ENetAddressFamily
+{
+    ENET_NO_ADDRESS_FAMILY = 0,
+    ENET_IPV4 = 1,
+    ENET_IPV6 = 2
+} ENetAddressFamily;
+
+/**
  * Packet flag bit constants.
  *
  * The host must be specified in network byte-order, and the port must be in
@@ -321,7 +335,8 @@ typedef enet_uint32 (ENET_CALLBACK * ENetChecksumCallback) (const ENetBuffer * b
   */
 typedef struct _ENetHost
 {
-   ENetSocket           socket;
+   ENetSocket           socket4;
+   ENetSocket           socket6;
    ENetAddress          address;                     /**< Internet address of the host */
    enet_uint32          incomingBandwidth;           /**< downstream bandwidth of the host */
    enet_uint32          outgoingBandwidth;           /**< upstream bandwidth of the host */
@@ -441,14 +456,14 @@ ENET_API void enet_time_set (enet_uint32);
 /** @defgroup socket ENet socket functions
     @{
 */
-ENET_API ENetSocket enet_socket_create (ENetSocketType);
-ENET_API int        enet_socket_bind (ENetSocket, const ENetAddress *);
+ENET_API ENetSocket enet_socket_create (ENetSocketType, ENetAddressFamily);
+ENET_API int        enet_socket_bind (ENetSocket, const ENetAddress *, ENetAddressFamily);
 ENET_API int        enet_socket_listen (ENetSocket, int);
-ENET_API ENetSocket enet_socket_accept (ENetSocket, ENetAddress *);
-ENET_API int        enet_socket_connect (ENetSocket, const ENetAddress *);
-ENET_API int        enet_socket_send (ENetSocket, const ENetAddress *, const ENetBuffer *, size_t);
-ENET_API int        enet_socket_receive (ENetSocket, ENetAddress *, ENetBuffer *, size_t);
-ENET_API int        enet_socket_wait (ENetSocket, enet_uint32 *, enet_uint32);
+ENET_API ENetSocket enet_socket_accept (ENetSocket, ENetAddress *, ENetAddressFamily);
+ENET_API int        enet_socket_connect (ENetSocket, const ENetAddress *, ENetAddressFamily);
+ENET_API int        enet_socket_send (ENetSocket, const ENetAddress *, const ENetBuffer *, size_t, ENetAddressFamily);
+ENET_API int        enet_socket_receive (ENetSocket, ENetAddress *, ENetBuffer *, size_t, ENetAddressFamily);
+ENET_API int        enet_socket_wait (ENetSocket, ENetSocket, enet_uint32 *, enet_uint32);
 ENET_API int        enet_socket_set_option (ENetSocket, ENetSocketOption, int);
 ENET_API void       enet_socket_destroy (ENetSocket);
 ENET_API int        enet_socketset_select (ENetSocket, ENetSocketSet *, ENetSocketSet *, enet_uint32);
@@ -488,6 +503,18 @@ ENET_API int enet_address_get_host_ip (const ENetAddress * address, char * hostN
 */
 ENET_API int enet_address_get_host (const ENetAddress * address, char * hostName, size_t nameLength);
 
+/** Maps an IPv4 Address to an IPv6 address.
+    @param address IPv4 address in network byte order
+    @returns the IPv4-mapped IPv6 address in network byte order
+*/
+ENET_API ENetHostAddress enet_address_map4 (enet_uint32 address);
+
+/** Returns the Address family of an (IPv4-mapped) IPv6 address.
+    @param address IPv6 address
+    @returns address family
+*/
+ENET_API ENetAddressFamily enet_get_address_family (const ENetAddress * address);
+
 /** @} */
 
 ENET_API ENetPacket * enet_packet_create (const void *, size_t, enet_uint32);
diff --git a/protocol.c b/protocol.c
index 8e26dfb..37f6387 100644
--- a/protocol.c
+++ b/protocol.c
@@ -9,6 +9,10 @@
 #include "enet/time.h"
 #include "enet/enet.h"
 
+const ENetHostAddress ENET_HOST_ANY = { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } };
+const ENetHostAddress ENET_IPV4MAPPED_PREFIX = { { 0,0,0,0,0,0,0,0,0,0, 0xff, 0xff, 0,0,0,0 } };
+const ENetHostAddress ENET_HOST_BROADCAST = { { 0,0,0,0,0,0,0,0,0,0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
+
 static size_t commandSizes [ENET_PROTOCOL_COMMAND_COUNT] =
 {
     0,
@@ -25,6 +29,22 @@ static size_t commandSizes [ENET_PROTOCOL_COMMAND_COUNT] =
     sizeof (ENetProtocolThrottleConfigure),
 };
 
+ENetHostAddress
+enet_address_map4 (enet_uint32 address)
+{
+    ENetHostAddress addr = ENET_IPV4MAPPED_PREFIX;
+    ((enet_uint32 *)addr.addr)[3] = address;
+    return addr;
+}
+
+ENetAddressFamily
+enet_get_address_family (const ENetAddress * address)
+{
+    if (!memcmp(& address->host, & ENET_IPV4MAPPED_PREFIX, ENET_IPV4MAPPED_PREFIX_LEN))
+        return ENET_IPV4;
+    return ENET_IPV6;
+}
+
 size_t
 enet_protocol_command_size (enet_uint8 commandNumber)
 {
@@ -262,9 +282,9 @@ enet_protocol_handle_connect (ENetHost * host, ENetProtocolHeader * header, ENet
          ++ currentPeer)
     {
         if (currentPeer -> state != ENET_PEER_STATE_DISCONNECTED &&
-            currentPeer -> address.host == host -> receivedAddress.host &&
             currentPeer -> address.port == host -> receivedAddress.port &&
-            currentPeer -> connectID == command -> connect.connectID)
+            currentPeer -> connectID == command -> connect.connectID &&
+            !memcmp(& currentPeer -> address.host, & host -> receivedAddress.host, sizeof (ENetHostAddress)))
           return NULL;
     }
 
@@ -848,10 +868,11 @@ enet_protocol_handle_incoming_commands (ENetHost * host, ENetEvent * event)
 
        if (peer -> state == ENET_PEER_STATE_DISCONNECTED ||
            peer -> state == ENET_PEER_STATE_ZOMBIE ||
-           (host -> receivedAddress.host != peer -> address.host &&
-             peer -> address.host != ENET_HOST_BROADCAST) ||
            (peer -> outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID &&
-            sessionID != peer -> incomingSessionID))
+            sessionID != peer -> incomingSessionID) ||
+           ( memcmp(& peer -> address.host, & host -> receivedAddress.host, sizeof (ENetHostAddress)) &&
+             memcmp(& peer -> address.host, & ENET_HOST_BROADCAST, sizeof (ENetHostAddress)) &&
+             peer -> address.host.addr[0] != 0xff ) )
          return 0;
     }
  
@@ -891,8 +912,7 @@ enet_protocol_handle_incoming_commands (ENetHost * host, ENetEvent * event)
        
     if (peer != NULL)
     {
-       peer -> address.host = host -> receivedAddress.host;
-       peer -> address.port = host -> receivedAddress.port;
+       peer -> address = host -> receivedAddress;
        peer -> incomingDataTotal += host -> receivedDataLength;
     }
     
@@ -1021,7 +1041,7 @@ commandError:
 }
  
 static int
-enet_protocol_receive_incoming_commands (ENetHost * host, ENetEvent * event)
+enet_protocol_receive_incoming_commands (ENetHost * host, ENetEvent * event, ENetAddressFamily family)
 {
     for (;;)
     {
@@ -1031,10 +1051,11 @@ enet_protocol_receive_incoming_commands (ENetHost * host, ENetEvent * event)
        buffer.data = host -> packetData [0];
        buffer.dataLength = sizeof (host -> packetData [0]);
 
-       receivedLength = enet_socket_receive (host -> socket,
+       receivedLength = enet_socket_receive (family == ENET_IPV4 ? host -> socket4 : host -> socket6,
                                              & host -> receivedAddress,
                                              & buffer,
-                                             1);
+                                             1,
+                                             family);
 
        if (receivedLength < 0)
          return -1;
@@ -1042,6 +1063,9 @@ enet_protocol_receive_incoming_commands (ENetHost * host, ENetEvent * event)
        if (receivedLength == 0)
          return 0;
 
+       if (enet_get_address_family (& host -> receivedAddress) != family)
+         return -1;
+
        host -> receivedData = host -> packetData [0];
        host -> receivedDataLength = receivedLength;
       
@@ -1497,7 +1521,12 @@ enet_protocol_send_outgoing_commands (ENetHost * host, ENetEvent * event, int ch
 
         currentPeer -> lastSendTime = host -> serviceTime;
 
-        sentLength = enet_socket_send (host -> socket, & currentPeer -> address, host -> buffers, host -> bufferCount);
+        ENetAddressFamily family = enet_get_address_family (& currentPeer -> address);
+        sentLength = enet_socket_send (family == ENET_IPV4 ? host -> socket4 : host -> socket6,
+                                           & currentPeer -> address,
+                                           host -> buffers,
+                                           host -> bufferCount,
+                                           family);
 
         enet_protocol_remove_sent_unreliable_commands (currentPeer);
 
@@ -1608,7 +1637,21 @@ enet_host_service (ENetHost * host, ENetEvent * event, enet_uint32 timeout)
           break;
        }
 
-       switch (enet_protocol_receive_incoming_commands (host, event))
+       switch (enet_protocol_receive_incoming_commands (host, event, ENET_IPV4))
+       {
+       case 1:
+          return 1;
+
+       case -1:
+          perror ("Error receiving incoming packets");
+
+          return -1;
+
+       default:
+          break;
+       }
+
+       switch (enet_protocol_receive_incoming_commands (host, event, ENET_IPV6))
        {
        case 1:
           return 1;
@@ -1660,7 +1703,7 @@ enet_host_service (ENetHost * host, ENetEvent * event, enet_uint32 timeout)
 
        waitCondition = ENET_SOCKET_WAIT_RECEIVE;
 
-       if (enet_socket_wait (host -> socket, & waitCondition, ENET_TIME_DIFFERENCE (timeout, host -> serviceTime)) != 0)
+       if (enet_socket_wait (host -> socket4, host -> socket6, & waitCondition, ENET_TIME_DIFFERENCE (timeout, host -> serviceTime)) != 0)
          return -1;
        
        host -> serviceTime = enet_time_get ();
diff --git a/unix.c b/unix.c
index 6971541..96d17f8 100644
--- a/unix.c
+++ b/unix.c
@@ -71,122 +71,162 @@ enet_time_set (enet_uint32 newTimeBase)
     timeBase = timeVal.tv_sec * 1000 + timeVal.tv_usec / 1000 - newTimeBase;
 }
 
-int
-enet_address_set_host (ENetAddress * address, const char * name)
+static enet_uint16
+enet_af (ENetAddressFamily family)
 {
-    struct hostent * hostEntry = NULL;
-#ifdef HAS_GETHOSTBYNAME_R
-    struct hostent hostData;
-    char buffer [2048];
-    int errnum;
-
-#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-    gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum);
-#else
-    hostEntry = gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & errnum);
-#endif
-#else
-    hostEntry = gethostbyname (name);
-#endif
+    if (family == ENET_IPV4)
+        return AF_INET;
+    if (family == ENET_IPV6)
+        return AF_INET6;
+    return 0;
+}
 
-    if (hostEntry == NULL ||
-        hostEntry -> h_addrtype != AF_INET)
-    {
-#ifdef HAS_INET_PTON
-        if (! inet_pton (AF_INET, name, & address -> host))
-#else
-        if (! inet_aton (name, (struct in_addr *) & address -> host))
-#endif
-            return -1;
-        return 0;
-    }
+static socklen_t
+enet_sa_size (ENetAddressFamily family)
+{
+    if (family == ENET_IPV4)
+        return sizeof (struct sockaddr_in);
+    if (family == ENET_IPV6)
+        return sizeof (struct sockaddr_in6);
+    return 0;
+}
 
-    address -> host = * (enet_uint32 *) hostEntry -> h_addr_list [0];
 
-    return 0;
+static ENetAddressFamily
+enet_address_set_address (ENetAddress * address, const struct sockaddr * sin)
+{
+    memset (address, 0, sizeof (ENetAddress));
+    if (sin -> sa_family == AF_INET)
+    {
+        address -> host = enet_address_map4 ((((struct sockaddr_in *) sin) -> sin_addr.s_addr));
+        //address -> scopeID = 0;
+        address -> port = ENET_NET_TO_HOST_16 (((struct sockaddr_in *) sin) -> sin_port);
+        return ENET_IPV4;
+    }
+    if (sin -> sa_family == AF_INET6)
+    {
+        address -> host = * (ENetHostAddress *) & ((struct sockaddr_in6 *) sin) -> sin6_addr;
+        address -> scopeID = ((struct sockaddr_in6 *) sin) -> sin6_scope_id;
+        address -> port = ENET_NET_TO_HOST_16 (((struct sockaddr_in6 *) sin) -> sin6_port);
+        return ENET_IPV6;
+    }
+    return ENET_NO_ADDRESS_FAMILY;
 }
 
-int
-enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength)
+static int
+enet_address_set_sin (struct sockaddr * sin, const ENetAddress * address, ENetAddressFamily family)
 {
-#ifdef HAS_INET_NTOP
-    if (inet_ntop (AF_INET, & address -> host, name, nameLength) == NULL)
-#else
-    char * addr = inet_ntoa (* (struct in_addr *) & address -> host);
-    if (addr != NULL)
-        strncpy (name, addr, nameLength);
-    else
-#endif
-        return -1;
-    return 0;
+    memset (sin, 0, enet_sa_size(family));
+    if (family == ENET_IPV4 &&
+      (enet_get_address_family (address) == ENET_IPV4 ||
+      !memcmp (address, & ENET_HOST_ANY, sizeof(ENetHostAddress))))
+    {
+        ((struct sockaddr_in *) sin) -> sin_family = AF_INET;
+        ((struct sockaddr_in *) sin) -> sin_addr = * (struct in_addr *) & address -> host.addr[12];
+        ((struct sockaddr_in *) sin) -> sin_port = ENET_HOST_TO_NET_16 (address -> port);
+        return 0;
+    }
+    else if (family == ENET_IPV6)
+    {
+        ((struct sockaddr_in6 *) sin) -> sin6_family = AF_INET6;
+        ((struct sockaddr_in6 *) sin) -> sin6_addr = * (struct in6_addr *) & address -> host;
+        ((struct sockaddr_in6 *) sin) -> sin6_scope_id = address -> scopeID;
+        ((struct sockaddr_in6 *) sin) -> sin6_port = ENET_HOST_TO_NET_16 (address -> port);
+        return 0;
+    }
+    return -1;
 }
 
 int
-enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength)
+enet_address_set_host (ENetAddress * address, const char * name)
 {
-    struct in_addr in;
-    struct hostent * hostEntry = NULL;
-#ifdef HAS_GETHOSTBYADDR_R
-    struct hostent hostData;
-    char buffer [2048];
-    int errnum;
+    enet_uint16 port = address -> port;
+    struct addrinfo hints;
+    struct addrinfo * result;
+    struct addrinfo * res;
 
-    in.s_addr = address -> host;
+    memset(& hints, 0, sizeof (hints));
+    hints.ai_flags = AI_NUMERICSERV | AI_ADDRCONFIG;
+    hints.ai_family = AF_UNSPEC;
 
-#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-    gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum);
-#else
-    hostEntry = gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & errnum);
-#endif
-#else
-    in.s_addr = address -> host;
+    if ( getaddrinfo(name, NULL, &hints, &result) )
+        return -1;
 
-    hostEntry = gethostbyaddr ((char *) & in, sizeof (struct in_addr), AF_INET);
-#endif
+    for (res = result; res != NULL; res = res -> ai_next)
+    {
+        if ( enet_address_set_address(address, res -> ai_addr) != ENET_NO_ADDRESS_FAMILY )
+            break;
+    }
 
-    if (hostEntry == NULL)
-      return enet_address_get_host_ip (address, name, nameLength);
+    address -> port = port;
+    freeaddrinfo(result);
+    if (res == NULL) return -1;
 
-    strncpy (name, hostEntry -> h_name, nameLength);
+    return 0;
+}
+
+static int
+enet_address_get_host_x (const ENetAddress * address, char * name, size_t nameLength, int flags)
+{
+    struct sockaddr_storage sin;
+    enet_address_set_sin((struct sockaddr *) & sin, address, ENET_IPV6);
+
+    if ( getnameinfo((struct sockaddr *) & sin, enet_sa_size (ENET_IPV6), name, nameLength, NULL, 0, flags))
+        return -1;
 
     return 0;
 }
 
 int
-enet_socket_bind (ENetSocket socket, const ENetAddress * address)
+enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength)
 {
-    struct sockaddr_in sin;
+    return enet_address_get_host_x(address, name, nameLength, NI_NUMERICHOST);
+}
 
-    memset (& sin, 0, sizeof (struct sockaddr_in));
+int
+enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength)
+{
+    return enet_address_get_host_x(address, name, nameLength, 0);
+}
 
-    sin.sin_family = AF_INET;
+int
+enet_socket_bind (ENetSocket socket, const ENetAddress * address, ENetAddressFamily family)
+{
+    struct sockaddr_storage sin;
 
     if (address != NULL)
     {
-       sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
-       sin.sin_addr.s_addr = address -> host;
+        enet_address_set_sin((struct sockaddr *) & sin, address, family);
     }
     else
     {
-       sin.sin_port = 0;
-       sin.sin_addr.s_addr = INADDR_ANY;
+        ENetAddress address_ = { ENET_HOST_ANY, 0, 0 };
+        enet_address_set_sin((struct sockaddr *) & sin, & address_, family);
     }
 
-    return bind (socket,
-                 (struct sockaddr *) & sin,
-                 sizeof (struct sockaddr_in)); 
+    return bind (socket, (struct sockaddr *) & sin, enet_sa_size(family));
 }
 
-int 
+int
 enet_socket_listen (ENetSocket socket, int backlog)
 {
     return listen (socket, backlog < 0 ? SOMAXCONN : backlog);
 }
 
 ENetSocket
-enet_socket_create (ENetSocketType type)
+enet_socket_create (ENetSocketType type, ENetAddressFamily family)
 {
-    return socket (PF_INET, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0);
+    ENetSocket sock = socket (enet_af (family), type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0);
+
+#ifdef IPV6_V6ONLY
+    if (family == ENET_IPV6)
+    {
+        int value = 1;
+        setsockopt (sock, IPPROTO_IPV6, IPV6_V6ONLY, & value, sizeof (int));
+    }
+#endif // IPV6_V6ONLY
+
+    return sock;
 }
 
 int
@@ -226,37 +266,31 @@ enet_socket_set_option (ENetSocket socket, ENetSocketOption option, int value)
 }
 
 int
-enet_socket_connect (ENetSocket socket, const ENetAddress * address)
+enet_socket_connect (ENetSocket socket, const ENetAddress * address, ENetAddressFamily family)
 {
-    struct sockaddr_in sin;
-
-    memset (& sin, 0, sizeof (struct sockaddr_in));
+    struct sockaddr_storage sin;
+    enet_address_set_sin((struct sockaddr *) & sin, address, family);
 
-    sin.sin_family = AF_INET;
-    sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
-    sin.sin_addr.s_addr = address -> host;
-
-    return connect (socket, (struct sockaddr *) & sin, sizeof (struct sockaddr_in));
+    return connect (socket, (struct sockaddr *) & sin, enet_sa_size (family));
 }
 
 ENetSocket
-enet_socket_accept (ENetSocket socket, ENetAddress * address)
+enet_socket_accept (ENetSocket socket, ENetAddress * address, ENetAddressFamily family)
 {
     int result;
-    struct sockaddr_in sin;
-    socklen_t sinLength = sizeof (struct sockaddr_in);
+    struct sockaddr_storage sin;
+    socklen_t sinLength = enet_sa_size (family);
 
     result = accept (socket, 
                      address != NULL ? (struct sockaddr *) & sin : NULL, 
                      address != NULL ? & sinLength : NULL);
-    
+
     if (result == -1)
       return ENET_SOCKET_NULL;
 
     if (address != NULL)
     {
-        address -> host = (enet_uint32) sin.sin_addr.s_addr;
-        address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
+        enet_address_set_address(address, (struct sockaddr *) & sin);
     }
 
     return result;
@@ -272,24 +306,20 @@ int
 enet_socket_send (ENetSocket socket,
                   const ENetAddress * address,
                   const ENetBuffer * buffers,
-                  size_t bufferCount)
+                  size_t bufferCount,
+                  ENetAddressFamily family)
 {
     struct msghdr msgHdr;
-    struct sockaddr_in sin;
+    struct sockaddr_storage sin;
     int sentLength;
 
     memset (& msgHdr, 0, sizeof (struct msghdr));
 
     if (address != NULL)
     {
-        memset (& sin, 0, sizeof (struct sockaddr_in));
-
-        sin.sin_family = AF_INET;
-        sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
-        sin.sin_addr.s_addr = address -> host;
-
+        enet_address_set_sin((struct sockaddr *) & sin, address, family);
         msgHdr.msg_name = & sin;
-        msgHdr.msg_namelen = sizeof (struct sockaddr_in);
+        msgHdr.msg_namelen = enet_sa_size (family);
     }
 
     msgHdr.msg_iov = (struct iovec *) buffers;
@@ -312,10 +342,11 @@ int
 enet_socket_receive (ENetSocket socket,
                      ENetAddress * address,
                      ENetBuffer * buffers,
-                     size_t bufferCount)
+                     size_t bufferCount,
+                     ENetAddressFamily family)
 {
     struct msghdr msgHdr;
-    struct sockaddr_in sin;
+    struct sockaddr_storage sin;
     int recvLength;
 
     memset (& msgHdr, 0, sizeof (struct msghdr));
@@ -323,7 +354,7 @@ enet_socket_receive (ENetSocket socket,
     if (address != NULL)
     {
         msgHdr.msg_name = & sin;
-        msgHdr.msg_namelen = sizeof (struct sockaddr_in);
+        msgHdr.msg_namelen = enet_sa_size (family);
     }
 
     msgHdr.msg_iov = (struct iovec *) buffers;
@@ -346,8 +377,7 @@ enet_socket_receive (ENetSocket socket,
 
     if (address != NULL)
     {
-        address -> host = (enet_uint32) sin.sin_addr.s_addr;
-        address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
+        enet_address_set_address(address, (struct sockaddr *) & sin);
     }
 
     return recvLength;
@@ -365,22 +395,31 @@ enet_socketset_select (ENetSocket maxSocket, ENetSocketSet * readSet, ENetSocket
 }
 
 int
-enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeout)
+enet_socket_wait (ENetSocket socket4, ENetSocket socket6, enet_uint32 * condition, enet_uint32 timeout)
 {
-#ifdef HAS_POLL
-    struct pollfd pollSocket;
+    //FIXME allow only one of the sockets being available
+//#ifdef HAS_POLL
+    struct pollfd pollSocket[2];
     int pollCount;
     
-    pollSocket.fd = socket;
-    pollSocket.events = 0;
+    pollSocket[0].fd = socket4;
+    pollSocket[1].fd = socket6;
+    pollSocket[0].events = 0;
+    pollSocket[1].events = 0;
 
     if (* condition & ENET_SOCKET_WAIT_SEND)
-      pollSocket.events |= POLLOUT;
+    {
+        pollSocket[0].events |= POLLOUT;
+        pollSocket[1].events |= POLLOUT;
+    }
 
     if (* condition & ENET_SOCKET_WAIT_RECEIVE)
-      pollSocket.events |= POLLIN;
+    {
+        pollSocket[0].events |= POLLIN;
+        pollSocket[1].events |= POLLIN;
+    }
 
-    pollCount = poll (& pollSocket, 1, timeout);
+    pollCount = poll (pollSocket, 2, timeout);
 
     if (pollCount < 0)
       return -1;
@@ -390,13 +429,15 @@ enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeou
     if (pollCount == 0)
       return 0;
 
-    if (pollSocket.revents & POLLOUT)
+    if ((pollSocket[0].revents | pollSocket[1].revents) & POLLOUT)
       * condition |= ENET_SOCKET_WAIT_SEND;
     
-    if (pollSocket.revents & POLLIN)
+    if ((pollSocket[0].revents | pollSocket[1].revents) & POLLIN)
       * condition |= ENET_SOCKET_WAIT_RECEIVE;
 
     return 0;
+/*
+FIXME: implement this
 #else
     fd_set readSet, writeSet;
     struct timeval timeVal;
@@ -432,6 +473,7 @@ enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeou
 
     return 0;
 #endif
+*/
 }
 
 #endif