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Api/InfoController.cs

@@ -0,0 +1,39 @@
+using Microsoft.AspNetCore.Mvc;
+using System.Text.Json.Serialization;
+
+namespace CatLink.Api
+{
+    public class RelayInfoResponse
+    {
+        [JsonPropertyName("relayHost")]
+        public string RelayHost { get; set; } = string.Empty;
+
+        [JsonPropertyName("relayPort")]
+        public int RelayPort { get; set; }
+    }
+
+    [ApiController]
+    [Route("info")]
+    public class InfoController : ControllerBase
+    {
+        private readonly IConfiguration _configuration;
+
+        public InfoController(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        [HttpGet]
+        public IActionResult GetInfo()
+        {
+            var host = _configuration.GetValue<string>("Host") ?? "localhost";
+            var relayPort = _configuration.GetValue<int>("RelayPort");
+
+            return Ok(new RelayInfoResponse
+            {
+                RelayHost = host,
+                RelayPort = relayPort
+            });
+        }
+    }
+}