Implement CRC64 checksums

Source/Managed/ENet.cs

@@ -90,6 +90,7 @@ namespace ENet {
 	public delegate void NoMemoryCallback();
 	public delegate void PacketFreeCallback(Packet packet);
 	public delegate int InterceptCallback(ref Event @event, IntPtr receivedData, int receivedDataLength);
+	public delegate ulong ChecksumCallback(IntPtr buffers, int bufferCount);
 
 	internal static class ArrayPool {
 		[ThreadStatic]
@@ -666,6 +667,18 @@ namespace ENet {
 			Native.enet_host_set_intercept_callback(nativeHost, Marshal.GetFunctionPointerForDelegate(callback));
 		}
 
+		public void SetChecksumCallback(IntPtr callback) {
+			IsCreated();
+
+			Native.enet_host_set_checksum_callback(nativeHost, callback);
+		}
+
+		public void SetChecksumCallback(ChecksumCallback callback) {
+			IsCreated();
+
+			Native.enet_host_set_checksum_callback(nativeHost, Marshal.GetFunctionPointerForDelegate(callback));
+		}
+
 		public void Flush() {
 			IsCreated();
 
@@ -928,7 +941,13 @@ namespace ENet {
 		public const uint timeoutLimit = 32;
 		public const uint timeoutMinimum = 5000;
 		public const uint timeoutMaximum = 30000;
-		public const uint version = (2 << 16) | (4 << 8) | (2);
+		public const uint version = (2 << 16) | (4 << 8) | (3);
+
+		public static uint Time {
+			get {
+				return Native.enet_time_get();
+			}
+		}
 
 		public static bool Initialize() {
 			if (Native.enet_linked_version() != version)
@@ -953,10 +972,8 @@ namespace ENet {
 			Native.enet_deinitialize();
 		}
 
-		public static uint Time {
-			get {
-				return Native.enet_time_get();
-			}
+		public static ulong CRC64(IntPtr buffers, int bufferCount) {
+			return Native.enet_crc64(buffers, bufferCount);
 		}
 	}
 
@@ -983,6 +1000,9 @@ namespace ENet {
 		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
 		internal static extern uint enet_time_get();
 
+		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
+		internal static extern ulong enet_crc64(IntPtr buffers, int bufferCount);
+
 		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
 		internal static extern int enet_address_set_ip(ref ENetAddress address, string ip);
 
@@ -1079,6 +1099,9 @@ namespace ENet {
 		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
 		internal static extern void enet_host_set_intercept_callback(IntPtr host, IntPtr callback);
 
+		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
+		internal static extern void enet_host_set_checksum_callback(IntPtr host, IntPtr callback);
+
 		[DllImport(nativeLibrary, CallingConvention = CallingConvention.Cdecl)]
 		internal static extern void enet_host_flush(IntPtr host);
 

Source/Native/enet.h

@@ -31,7 +31,7 @@
 
 #define ENET_VERSION_MAJOR 2
 #define ENET_VERSION_MINOR 4
-#define ENET_VERSION_PATCH 2
+#define ENET_VERSION_PATCH 3
 #define ENET_VERSION_CREATE(major, minor, patch) (((major) << 16) | ((minor) << 8) | (patch))
 #define ENET_VERSION_GET_MAJOR(version) (((version) >> 16) & 0xFF)
 #define ENET_VERSION_GET_MINOR(version) (((version) >> 8) & 0xFF)
@@ -159,6 +159,14 @@
 #define ENET_NET_TO_HOST_16(value) (ntohs(value))
 #define ENET_NET_TO_HOST_32(value) (ntohl(value))
 
+#if __BIG_ENDIAN__
+	#define ENET_HOST_TO_NET_64(x) (x)
+	#define ENET_NET_TO_HOST_64(x) (x)
+#else
+	#define ENET_HOST_TO_NET_64(x) (((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
+	#define ENET_NET_TO_HOST_64(x) (((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -619,7 +627,7 @@ extern "C" {
 		ENetPacket* packet;
 	} ENetEvent;
 
-	typedef uint32_t (ENET_CALLBACK *ENetChecksumCallback)(const ENetBuffer* buffers, size_t bufferCount);
+	typedef uint64_t (ENET_CALLBACK *ENetChecksumCallback)(const ENetBuffer* buffers, int bufferCount);
 
 	typedef int (ENET_CALLBACK *ENetInterceptCallback)(ENetEvent* event, uint8_t* receivedData, int receivedDataLength);
 
@@ -676,7 +684,7 @@ extern "C" {
 	ENET_API ENetVersion enet_linked_version(void);
 	ENET_API int enet_array_is_zeroed(const uint8_t*, int);
 	ENET_API uint32_t enet_time_get(void);
-	ENET_API uint32_t enet_crc32(const ENetBuffer*, size_t);
+	ENET_API uint64_t enet_crc64(const ENetBuffer*, int);
 
 	ENET_API ENetPacket* enet_packet_create(const void*, size_t, uint32_t);
 	ENET_API ENetPacket* enet_packet_create_offset(const void*, size_t, size_t, uint32_t);
@@ -741,7 +749,8 @@ extern "C" {
 	ENET_API uint32_t enet_host_get_bytes_sent(const ENetHost*);
 	ENET_API uint32_t enet_host_get_bytes_received(const ENetHost*);
 	ENET_API void enet_host_set_max_duplicate_peers(ENetHost*, uint16_t);
-	ENET_API void enet_host_set_intercept_callback(ENetHost* host, ENetInterceptCallback callback);
+	ENET_API void enet_host_set_intercept_callback(ENetHost*, ENetInterceptCallback);
+	ENET_API void enet_host_set_checksum_callback(ENetHost*, ENetChecksumCallback);
 
 	ENET_API uint32_t enet_peer_get_id(const ENetPeer*);
 	ENET_API int enet_peer_get_ip(const ENetPeer*, char*, size_t);
@@ -1238,60 +1247,152 @@ extern "C" {
 =======================================================================
 */
 
-	static int initializedCRC32 = 0;
-	static uint32_t crcTable[256];
-
-	static uint32_t reflect_crc(int val, int bits) {
-		int result = 0, bit;
-
-		for (bit = 0; bit < bits; bit++) {
-			if (val & 1)
-				result |= 1 << (bits - 1 - bit);
-
-			val >>= 1;
-		}
-
-		return result;
-	}
-
-	static void initialize_crc32(void) {
-		int byte;
-
-		for (byte = 0; byte < 256; ++byte) {
-			uint32_t crc = reflect_crc(byte, 8) << 24;
-			int offset;
-
-			for (offset = 0; offset < 8; ++offset) {
-				if (crc & 0x80000000)
-					crc = (crc << 1) ^ 0x04c11db7;
-				else
-					crc <<= 1;
-			}
-
-			crcTable[byte] = reflect_crc(crc, 32);
-		}
-
-		initializedCRC32 = 1;
-	}
-
-	uint32_t enet_crc32(const ENetBuffer* buffers, size_t bufferCount) {
-		uint32_t crc = 0xFFFFFFFF;
+	static const uint64_t crcTable[256] = {
+		UINT64_C(0x0000000000000000), UINT64_C(0x7ad870c830358979),
+		UINT64_C(0xf5b0e190606b12f2), UINT64_C(0x8f689158505e9b8b),
+		UINT64_C(0xc038e5739841b68f), UINT64_C(0xbae095bba8743ff6),
+		UINT64_C(0x358804e3f82aa47d), UINT64_C(0x4f50742bc81f2d04),
+		UINT64_C(0xab28ecb46814fe75), UINT64_C(0xd1f09c7c5821770c),
+		UINT64_C(0x5e980d24087fec87), UINT64_C(0x24407dec384a65fe),
+		UINT64_C(0x6b1009c7f05548fa), UINT64_C(0x11c8790fc060c183),
+		UINT64_C(0x9ea0e857903e5a08), UINT64_C(0xe478989fa00bd371),
+		UINT64_C(0x7d08ff3b88be6f81), UINT64_C(0x07d08ff3b88be6f8),
+		UINT64_C(0x88b81eabe8d57d73), UINT64_C(0xf2606e63d8e0f40a),
+		UINT64_C(0xbd301a4810ffd90e), UINT64_C(0xc7e86a8020ca5077),
+		UINT64_C(0x4880fbd87094cbfc), UINT64_C(0x32588b1040a14285),
+		UINT64_C(0xd620138fe0aa91f4), UINT64_C(0xacf86347d09f188d),
+		UINT64_C(0x2390f21f80c18306), UINT64_C(0x594882d7b0f40a7f),
+		UINT64_C(0x1618f6fc78eb277b), UINT64_C(0x6cc0863448deae02),
+		UINT64_C(0xe3a8176c18803589), UINT64_C(0x997067a428b5bcf0),
+		UINT64_C(0xfa11fe77117cdf02), UINT64_C(0x80c98ebf2149567b),
+		UINT64_C(0x0fa11fe77117cdf0), UINT64_C(0x75796f2f41224489),
+		UINT64_C(0x3a291b04893d698d), UINT64_C(0x40f16bccb908e0f4),
+		UINT64_C(0xcf99fa94e9567b7f), UINT64_C(0xb5418a5cd963f206),
+		UINT64_C(0x513912c379682177), UINT64_C(0x2be1620b495da80e),
+		UINT64_C(0xa489f35319033385), UINT64_C(0xde51839b2936bafc),
+		UINT64_C(0x9101f7b0e12997f8), UINT64_C(0xebd98778d11c1e81),
+		UINT64_C(0x64b116208142850a), UINT64_C(0x1e6966e8b1770c73),
+		UINT64_C(0x8719014c99c2b083), UINT64_C(0xfdc17184a9f739fa),
+		UINT64_C(0x72a9e0dcf9a9a271), UINT64_C(0x08719014c99c2b08),
+		UINT64_C(0x4721e43f0183060c), UINT64_C(0x3df994f731b68f75),
+		UINT64_C(0xb29105af61e814fe), UINT64_C(0xc849756751dd9d87),
+		UINT64_C(0x2c31edf8f1d64ef6), UINT64_C(0x56e99d30c1e3c78f),
+		UINT64_C(0xd9810c6891bd5c04), UINT64_C(0xa3597ca0a188d57d),
+		UINT64_C(0xec09088b6997f879), UINT64_C(0x96d1784359a27100),
+		UINT64_C(0x19b9e91b09fcea8b), UINT64_C(0x636199d339c963f2),
+		UINT64_C(0xdf7adabd7a6e2d6f), UINT64_C(0xa5a2aa754a5ba416),
+		UINT64_C(0x2aca3b2d1a053f9d), UINT64_C(0x50124be52a30b6e4),
+		UINT64_C(0x1f423fcee22f9be0), UINT64_C(0x659a4f06d21a1299),
+		UINT64_C(0xeaf2de5e82448912), UINT64_C(0x902aae96b271006b),
+		UINT64_C(0x74523609127ad31a), UINT64_C(0x0e8a46c1224f5a63),
+		UINT64_C(0x81e2d7997211c1e8), UINT64_C(0xfb3aa75142244891),
+		UINT64_C(0xb46ad37a8a3b6595), UINT64_C(0xceb2a3b2ba0eecec),
+		UINT64_C(0x41da32eaea507767), UINT64_C(0x3b024222da65fe1e),
+		UINT64_C(0xa2722586f2d042ee), UINT64_C(0xd8aa554ec2e5cb97),
+		UINT64_C(0x57c2c41692bb501c), UINT64_C(0x2d1ab4dea28ed965),
+		UINT64_C(0x624ac0f56a91f461), UINT64_C(0x1892b03d5aa47d18),
+		UINT64_C(0x97fa21650afae693), UINT64_C(0xed2251ad3acf6fea),
+		UINT64_C(0x095ac9329ac4bc9b), UINT64_C(0x7382b9faaaf135e2),
+		UINT64_C(0xfcea28a2faafae69), UINT64_C(0x8632586aca9a2710),
+		UINT64_C(0xc9622c4102850a14), UINT64_C(0xb3ba5c8932b0836d),
+		UINT64_C(0x3cd2cdd162ee18e6), UINT64_C(0x460abd1952db919f),
+		UINT64_C(0x256b24ca6b12f26d), UINT64_C(0x5fb354025b277b14),
+		UINT64_C(0xd0dbc55a0b79e09f), UINT64_C(0xaa03b5923b4c69e6),
+		UINT64_C(0xe553c1b9f35344e2), UINT64_C(0x9f8bb171c366cd9b),
+		UINT64_C(0x10e3202993385610), UINT64_C(0x6a3b50e1a30ddf69),
+		UINT64_C(0x8e43c87e03060c18), UINT64_C(0xf49bb8b633338561),
+		UINT64_C(0x7bf329ee636d1eea), UINT64_C(0x012b592653589793),
+		UINT64_C(0x4e7b2d0d9b47ba97), UINT64_C(0x34a35dc5ab7233ee),
+		UINT64_C(0xbbcbcc9dfb2ca865), UINT64_C(0xc113bc55cb19211c),
+		UINT64_C(0x5863dbf1e3ac9dec), UINT64_C(0x22bbab39d3991495),
+		UINT64_C(0xadd33a6183c78f1e), UINT64_C(0xd70b4aa9b3f20667),
+		UINT64_C(0x985b3e827bed2b63), UINT64_C(0xe2834e4a4bd8a21a),
+		UINT64_C(0x6debdf121b863991), UINT64_C(0x1733afda2bb3b0e8),
+		UINT64_C(0xf34b37458bb86399), UINT64_C(0x8993478dbb8deae0),
+		UINT64_C(0x06fbd6d5ebd3716b), UINT64_C(0x7c23a61ddbe6f812),
+		UINT64_C(0x3373d23613f9d516), UINT64_C(0x49aba2fe23cc5c6f),
+		UINT64_C(0xc6c333a67392c7e4), UINT64_C(0xbc1b436e43a74e9d),
+		UINT64_C(0x95ac9329ac4bc9b5), UINT64_C(0xef74e3e19c7e40cc),
+		UINT64_C(0x601c72b9cc20db47), UINT64_C(0x1ac40271fc15523e),
+		UINT64_C(0x5594765a340a7f3a), UINT64_C(0x2f4c0692043ff643),
+		UINT64_C(0xa02497ca54616dc8), UINT64_C(0xdafce7026454e4b1),
+		UINT64_C(0x3e847f9dc45f37c0), UINT64_C(0x445c0f55f46abeb9),
+		UINT64_C(0xcb349e0da4342532), UINT64_C(0xb1eceec59401ac4b),
+		UINT64_C(0xfebc9aee5c1e814f), UINT64_C(0x8464ea266c2b0836),
+		UINT64_C(0x0b0c7b7e3c7593bd), UINT64_C(0x71d40bb60c401ac4),
+		UINT64_C(0xe8a46c1224f5a634), UINT64_C(0x927c1cda14c02f4d),
+		UINT64_C(0x1d148d82449eb4c6), UINT64_C(0x67ccfd4a74ab3dbf),
+		UINT64_C(0x289c8961bcb410bb), UINT64_C(0x5244f9a98c8199c2),
+		UINT64_C(0xdd2c68f1dcdf0249), UINT64_C(0xa7f41839ecea8b30),
+		UINT64_C(0x438c80a64ce15841), UINT64_C(0x3954f06e7cd4d138),
+		UINT64_C(0xb63c61362c8a4ab3), UINT64_C(0xcce411fe1cbfc3ca),
+		UINT64_C(0x83b465d5d4a0eece), UINT64_C(0xf96c151de49567b7),
+		UINT64_C(0x76048445b4cbfc3c), UINT64_C(0x0cdcf48d84fe7545),
+		UINT64_C(0x6fbd6d5ebd3716b7), UINT64_C(0x15651d968d029fce),
+		UINT64_C(0x9a0d8ccedd5c0445), UINT64_C(0xe0d5fc06ed698d3c),
+		UINT64_C(0xaf85882d2576a038), UINT64_C(0xd55df8e515432941),
+		UINT64_C(0x5a3569bd451db2ca), UINT64_C(0x20ed197575283bb3),
+		UINT64_C(0xc49581ead523e8c2), UINT64_C(0xbe4df122e51661bb),
+		UINT64_C(0x3125607ab548fa30), UINT64_C(0x4bfd10b2857d7349),
+		UINT64_C(0x04ad64994d625e4d), UINT64_C(0x7e7514517d57d734),
+		UINT64_C(0xf11d85092d094cbf), UINT64_C(0x8bc5f5c11d3cc5c6),
+		UINT64_C(0x12b5926535897936), UINT64_C(0x686de2ad05bcf04f),
+		UINT64_C(0xe70573f555e26bc4), UINT64_C(0x9ddd033d65d7e2bd),
+		UINT64_C(0xd28d7716adc8cfb9), UINT64_C(0xa85507de9dfd46c0),
+		UINT64_C(0x273d9686cda3dd4b), UINT64_C(0x5de5e64efd965432),
+		UINT64_C(0xb99d7ed15d9d8743), UINT64_C(0xc3450e196da80e3a),
+		UINT64_C(0x4c2d9f413df695b1), UINT64_C(0x36f5ef890dc31cc8),
+		UINT64_C(0x79a59ba2c5dc31cc), UINT64_C(0x037deb6af5e9b8b5),
+		UINT64_C(0x8c157a32a5b7233e), UINT64_C(0xf6cd0afa9582aa47),
+		UINT64_C(0x4ad64994d625e4da), UINT64_C(0x300e395ce6106da3),
+		UINT64_C(0xbf66a804b64ef628), UINT64_C(0xc5bed8cc867b7f51),
+		UINT64_C(0x8aeeace74e645255), UINT64_C(0xf036dc2f7e51db2c),
+		UINT64_C(0x7f5e4d772e0f40a7), UINT64_C(0x05863dbf1e3ac9de),
+		UINT64_C(0xe1fea520be311aaf), UINT64_C(0x9b26d5e88e0493d6),
+		UINT64_C(0x144e44b0de5a085d), UINT64_C(0x6e963478ee6f8124),
+		UINT64_C(0x21c640532670ac20), UINT64_C(0x5b1e309b16452559),
+		UINT64_C(0xd476a1c3461bbed2), UINT64_C(0xaeaed10b762e37ab),
+		UINT64_C(0x37deb6af5e9b8b5b), UINT64_C(0x4d06c6676eae0222),
+		UINT64_C(0xc26e573f3ef099a9), UINT64_C(0xb8b627f70ec510d0),
+		UINT64_C(0xf7e653dcc6da3dd4), UINT64_C(0x8d3e2314f6efb4ad),
+		UINT64_C(0x0256b24ca6b12f26), UINT64_C(0x788ec2849684a65f),
+		UINT64_C(0x9cf65a1b368f752e), UINT64_C(0xe62e2ad306bafc57),
+		UINT64_C(0x6946bb8b56e467dc), UINT64_C(0x139ecb4366d1eea5),
+		UINT64_C(0x5ccebf68aecec3a1), UINT64_C(0x2616cfa09efb4ad8),
+		UINT64_C(0xa97e5ef8cea5d153), UINT64_C(0xd3a62e30fe90582a),
+		UINT64_C(0xb0c7b7e3c7593bd8), UINT64_C(0xca1fc72bf76cb2a1),
+		UINT64_C(0x45775673a732292a), UINT64_C(0x3faf26bb9707a053),
+		UINT64_C(0x70ff52905f188d57), UINT64_C(0x0a2722586f2d042e),
+		UINT64_C(0x854fb3003f739fa5), UINT64_C(0xff97c3c80f4616dc),
+		UINT64_C(0x1bef5b57af4dc5ad), UINT64_C(0x61372b9f9f784cd4),
+		UINT64_C(0xee5fbac7cf26d75f), UINT64_C(0x9487ca0fff135e26),
+		UINT64_C(0xdbd7be24370c7322), UINT64_C(0xa10fceec0739fa5b),
+		UINT64_C(0x2e675fb4576761d0), UINT64_C(0x54bf2f7c6752e8a9),
+		UINT64_C(0xcdcf48d84fe75459), UINT64_C(0xb71738107fd2dd20),
+		UINT64_C(0x387fa9482f8c46ab), UINT64_C(0x42a7d9801fb9cfd2),
+		UINT64_C(0x0df7adabd7a6e2d6), UINT64_C(0x772fdd63e7936baf),
+		UINT64_C(0xf8474c3bb7cdf024), UINT64_C(0x829f3cf387f8795d),
+		UINT64_C(0x66e7a46c27f3aa2c), UINT64_C(0x1c3fd4a417c62355),
+		UINT64_C(0x935745fc4798b8de), UINT64_C(0xe98f353477ad31a7),
+		UINT64_C(0xa6df411fbfb21ca3), UINT64_C(0xdc0731d78f8795da),
+		UINT64_C(0x536fa08fdfd90e51), UINT64_C(0x29b7d047efec8728),
+	};
 
-		if (!initializedCRC32)
-			initialize_crc32();
+	uint64_t enet_crc64(const ENetBuffer* buffers, int bufferCount) {
+		uint64_t crc = 0xFFFFFFFFFFFFFFFF;
 
 		while (bufferCount-- > 0) {
 			const uint8_t* data = (const uint8_t*)buffers->data;
 			const uint8_t* dataEnd = &data[buffers->dataLength];
 
 			while (data < dataEnd) {
-				crc = (crc >> 8) ^ crcTable[(crc & 0xFF)^* data++];
+				crc = (crc >> 8) ^ crcTable[(uint8_t)crc ^* data++];
 			}
 
 			++buffers;
 		}
 
-		return ENET_HOST_TO_NET_32(~crc);
+		return ENET_HOST_TO_NET_64(~crc);
 	}
 
 /*
@@ -2256,7 +2357,7 @@ extern "C" {
 		headerSize = (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME ? sizeof(ENetProtocolHeader) : (size_t)&((ENetProtocolHeader*)0)->sentTime);
 
 		if (host->checksumCallback != NULL)
-			headerSize += sizeof(uint32_t);
+			headerSize += sizeof(uint64_t);
 
 		if (peerID == ENET_PROTOCOL_MAXIMUM_PEER_ID) {
 			peer = NULL;
@@ -2270,8 +2371,8 @@ extern "C" {
 		}
 
 		if (host->checksumCallback != NULL) {
-			uint32_t* checksum = (uint32_t*)&host->receivedData[headerSize - sizeof(uint32_t)];
-			uint32_t desiredChecksum = *checksum;
+			uint64_t* checksum = (uint64_t*)&host->receivedData[headerSize - sizeof(uint64_t)];
+			uint64_t desiredChecksum = *checksum;
 			ENetBuffer buffer;
 			*checksum = peer != NULL ? peer->connectID : 0;
 			buffer.data = host->receivedData;
@@ -2769,9 +2870,9 @@ extern "C" {
 				header->peerID = ENET_HOST_TO_NET_16(currentPeer->outgoingPeerID | host->headerFlags);
 
 				if (host->checksumCallback != NULL) {
-					uint32_t* checksum = (uint32_t*)&headerData[host->buffers->dataLength];
+					uint64_t* checksum = (uint64_t*)&headerData[host->buffers->dataLength];
 					*checksum = currentPeer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID ? currentPeer->connectID : 0;
-					host->buffers->dataLength += sizeof(uint32_t);
+					host->buffers->dataLength += sizeof(uint64_t);
 					*checksum = host->checksumCallback(host->buffers, host->bufferCount);
 				}
 
@@ -2983,7 +3084,7 @@ extern "C" {
 		fragmentLength = peer->mtu - sizeof(ENetProtocolHeader) - sizeof(ENetProtocolSendFragment);
 
 		if (peer->host->checksumCallback != NULL)
-			fragmentLength -= sizeof(uint32_t);
+			fragmentLength -= sizeof(uint64_t);
 
 		if (packet->dataLength > fragmentLength) {
 			uint32_t fragmentCount = (packet->dataLength + fragmentLength - 1) / fragmentLength, fragmentNumber, fragmentOffset;
@@ -4914,6 +5015,10 @@ extern "C" {
 		host->interceptCallback = callback;
 	}
 
+	void enet_host_set_checksum_callback(ENetHost* host, ENetChecksumCallback callback) {
+		host->checksumCallback = callback;
+	}
+
 	uint32_t enet_peer_get_id(const ENetPeer* peer) {
 		return peer->incomingPeerID;
 	}