✨ feat: add GitHub token input and improve IP retrieval

- Updated `.mcp.json` to include a new input for GitHub personal access token, marked as a password.
- Added server configuration for GitHub to run a Docker-based MCP server with the token as an environment variable.
- Enhanced IP address retrieval in `Program.cs` by checking the "CF-Connecting-IP" header first, improving accuracy when requests are routed through Cloudflare. If the header is absent or invalid, it falls back to the original method.

Author: iAmBipinPaul

.mcp.json

@@ -0,0 +1,27 @@
+{
+  "inputs": [
+    {
+      "id": "github_pat",
+      "description": "GitHub personal access token",
+      "type": "promptString",
+      "password": true
+    }
+  ],
+  "servers": {
+    "github": {
+      "type": "stdio",
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "-e",
+        "GITHUB_PERSONAL_ACCESS_TOKEN",
+        "ghcr.io/github/github-mcp-server"
+      ],
+      "env": {
+        "GITHUB_PERSONAL_ACCESS_TOKEN": "${input:github_pat}"
+      }
+    }
+  }
+}

src/API/UrlShortener.Server/Program.cs

@@ -131,7 +131,17 @@ await shortUrlService.DeleteShortUrl(new DeleteShortUrlRequest()
         {
             var defaultUrlForRedirect = configuration.GetValue<string>("DefaultUrlForRedirect") ??
                                         throw new InvalidOperationException();
-            IPAddress? ipAddress = httpContextAccessor?.HttpContext?.Connection?.RemoteIpAddress;
+            // Try to get the real client IP from Cloudflare header first
+            string? cfConnectingIp = httpContextAccessor?.HttpContext?.Request?.Headers["CF-Connecting-IP"].FirstOrDefault();
+            IPAddress? ipAddress = null;
+            if (!string.IsNullOrWhiteSpace(cfConnectingIp) && IPAddress.TryParse(cfConnectingIp, out var parsedIp))
+            {
+                ipAddress = parsedIp;
+            }
+            else
+            {
+                ipAddress = httpContextAccessor?.HttpContext?.Connection?.RemoteIpAddress;
+            }
             var uaString = httpContextAccessor?.HttpContext?.Request?.Headers["User-Agent"].ToString();
             var uaParser = Parser.GetDefault();
             ClientInfo c = uaParser.Parse(uaString);