Debug echo controller

JetHerald/Controllers/EchoController.cs

@@ -0,0 +1,23 @@
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+namespace JetHerald.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class EchoController : ControllerBase
+    {
+        [HttpGet]
+        public async Task<IActionResult> Get(string msg)
+        {
+            await Task.Delay(100);
+            return Ok(msg);
+        }
+
+        [HttpPost]
+        public IActionResult GetSync(string msg)
+        {
+            return Ok(msg);
+        }
+    }
+}