Initial

LightlessSyncServer/LightlessSyncShared/Extensions.cs

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+using Microsoft.AspNetCore.Http;
+
+namespace LightlessSyncShared;
+
+public static class Extensions
+{
+    private static long _noIpCntr = 0;
+    public static string GetIpAddress(this IHttpContextAccessor accessor)
+    {
+        try
+        {
+            if (!string.IsNullOrEmpty(accessor.HttpContext.Request.Headers["CF-CONNECTING-IP"]))
+                return accessor.HttpContext.Request.Headers["CF-CONNECTING-IP"];
+
+            if (!string.IsNullOrEmpty(accessor.HttpContext.Request.Headers["X-Forwarded-For"]))
+            {
+                return accessor.HttpContext.Request.Headers["X-Forwarded-For"];
+            }
+
+            var ipAddress = accessor.HttpContext.GetServerVariable("HTTP_X_FORWARDED_FOR");
+
+            if (!string.IsNullOrWhiteSpace(ipAddress))
+            {
+                var addresses = ipAddress.Split(',', StringSplitOptions.RemoveEmptyEntries);
+                var lastEntry = addresses.LastOrDefault();
+                if (lastEntry != null)
+                {
+                    return lastEntry;
+                }
+            }
+
+            return accessor.HttpContext.Connection.RemoteIpAddress?.ToString() ?? "NoIp";
+        }
+        catch
+        {
+            return "NoIp" + _noIpCntr++;
+        }
+    }
+}