Fixes socket helper

Author: kamronbatman

Projects/Server/Network/SocketHelper.cs

@@ -144,8 +144,13 @@ private static IPAddress ParseSockAddr(ReadOnlySpan<byte> buffer)
             return null;
         }
 
-        // First two bytes are address family (little-endian on most platforms)
-        var family = (AddressFamily)BitConverter.ToInt16(buffer);
+        // macOS/BSD: sockaddr has sin_len (1 byte) + sin_family (1 byte)
+        // Linux: sockaddr has sa_family (2 bytes)
+        var isBsd = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ||
+                    RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD);
+        var family = isBsd
+            ? (AddressFamily)buffer[1]  // BSD: family is second byte
+            : (AddressFamily)BitConverter.ToInt16(buffer);  // Linux: family is first 2 bytes
 
         if (family == AddressFamily.InterNetwork && buffer.Length >= 8)
         {
@@ -169,9 +174,15 @@ private static IPEndPoint ParseSockAddrEndPoint(ReadOnlySpan<byte> buffer)
             return null;
         }
 
-        // First two bytes are address family (little-endian on most platforms)
-        var family = (AddressFamily)BitConverter.ToInt16(buffer);
-        // Port is in network byte order (big-endian)
+        // macOS/BSD: sockaddr has sin_len (1 byte) + sin_family (1 byte)
+        // Linux: sockaddr has sa_family (2 bytes)
+        var isBsd = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ||
+                    RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD);
+        var family = isBsd
+            ? (AddressFamily)buffer[1]  // BSD: family is second byte
+            : (AddressFamily)BitConverter.ToInt16(buffer);  // Linux: family is first 2 bytes
+
+        // Port is in network byte order (big-endian), at offset 2 on both platforms
         var port = (buffer[2] << 8) | buffer[3];
 
         if (family == AddressFamily.InterNetwork && buffer.Length >= 8)