diff --git a/SVSim.EmulatedEntrypoint/Controllers/ArenaTwoPickBattleController.cs b/SVSim.EmulatedEntrypoint/Controllers/ArenaTwoPickBattleController.cs
index d326da1..c2f2322 100644
--- a/SVSim.EmulatedEntrypoint/Controllers/ArenaTwoPickBattleController.cs
+++ b/SVSim.EmulatedEntrypoint/Controllers/ArenaTwoPickBattleController.cs
@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Mvc;
+using SVSim.BattleNode.Bridge;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.ArenaTwoPick;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Responses.ArenaTwoPick;
 using SVSim.EmulatedEntrypoint.Services;
@@ -9,13 +10,25 @@ namespace SVSim.EmulatedEntrypoint.Controllers;
 public class ArenaTwoPickBattleController : SVSimController
 {
     private readonly IArenaTwoPickService _svc;
-    public ArenaTwoPickBattleController(IArenaTwoPickService svc) => _svc = svc;
+    private readonly IMatchingBridge _matching;
+
+    public ArenaTwoPickBattleController(IArenaTwoPickService svc, IMatchingBridge matching)
+    {
+        _svc = svc;
+        _matching = matching;
+    }
 
     [HttpPost("do_matching")]
     public IActionResult DoMatching([FromBody] DoMatchingRequest req)
     {
-        if (!TryGetViewerId(out _)) return Unauthorized();
-        return Ok(new DoMatchingResponseDto());
+        if (!TryGetViewerId(out var vid)) return Unauthorized();
+        var match = _matching.RegisterPendingBattle(vid);
+        return Ok(new DoMatchingResponseDto
+        {
+            MatchingState = 3004,
+            BattleId = match.BattleId,
+            NodeServerUrl = match.NodeServerUrl,
+        });
     }
 
     [HttpPost("finish")]
diff --git a/SVSim.EmulatedEntrypoint/Models/Dtos/Responses/ArenaTwoPick/DoMatchingResponseDto.cs b/SVSim.EmulatedEntrypoint/Models/Dtos/Responses/ArenaTwoPick/DoMatchingResponseDto.cs
index 0a14d50..7c3411f 100644
--- a/SVSim.EmulatedEntrypoint/Models/Dtos/Responses/ArenaTwoPick/DoMatchingResponseDto.cs
+++ b/SVSim.EmulatedEntrypoint/Models/Dtos/Responses/ArenaTwoPick/DoMatchingResponseDto.cs
@@ -5,23 +5,26 @@ using SVSim.EmulatedEntrypoint.Models.Dtos.Common;
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.ArenaTwoPick;
 
 [MessagePackObject]
-public class DoMatchingResponseDto
+public sealed class DoMatchingResponseDto
 {
+    [JsonPropertyName("matching_state")] [Key("matching_state")]
+    public int MatchingState { get; set; } = 3004;  // SUCCEEDED
+
     [JsonPropertyName("timeout_period")] [JsonConverter(typeof(StringifiedIntConverter))] [Key("timeout_period")]
-    public int TimeoutPeriod { get; set; } = 50;
+    public int TimeoutPeriod { get; set; } = 30;
 
     [JsonPropertyName("retry_period")] [JsonConverter(typeof(StringifiedIntConverter))] [Key("retry_period")]
     public int RetryPeriod { get; set; } = 3;
 
+    [JsonPropertyName("battle_id")] [Key("battle_id")]
+    public string BattleId { get; set; } = "";
+
     [JsonPropertyName("node_server_url")] [Key("node_server_url")]
     public string NodeServerUrl { get; set; } = "";
 
     [JsonPropertyName("room_param")] [Key("room_param")]
     public string RoomParam { get; set; } = "";
 
-    [JsonPropertyName("matching_state")] [Key("matching_state")]
-    public int MatchingState { get; set; } = 3002;
-
     [JsonPropertyName("mission_parameter")] [Key("mission_parameter")]
     public Dictionary<string, string> MissionParameter { get; set; } = new()
     {
diff --git a/SVSim.UnitTests/Controllers/ArenaTwoPickBattleControllerTests.cs b/SVSim.UnitTests/Controllers/ArenaTwoPickBattleControllerTests.cs
index 40582b4..33c4ea8 100644
--- a/SVSim.UnitTests/Controllers/ArenaTwoPickBattleControllerTests.cs
+++ b/SVSim.UnitTests/Controllers/ArenaTwoPickBattleControllerTests.cs
@@ -1,5 +1,6 @@
 using System.Net;
 using System.Net.Http.Json;
+using System.Text.Json;
 using SVSim.UnitTests.Infrastructure;
 
 namespace SVSim.UnitTests.Controllers;
@@ -7,7 +8,7 @@ namespace SVSim.UnitTests.Controllers;
 public class ArenaTwoPickBattleControllerTests
 {
     [Test]
-    public async Task DoMatching_returns_perpetual_searching_with_empty_node_url()
+    public async Task DoMatching_AuthenticatedViewer_Returns3004WithBattleIdAndNodeUrl()
     {
         using var factory = new SVSimTestFactory();
         var viewerId = await factory.SeedViewerAsync();
@@ -20,8 +21,13 @@ public class ArenaTwoPickBattleControllerTests
 
         Assert.That(resp.StatusCode, Is.EqualTo(HttpStatusCode.OK));
         var body = await resp.Content.ReadAsStringAsync();
-        StringAssert.Contains("\"matching_state\":3002", body);
-        StringAssert.Contains("\"node_server_url\":\"\"", body);
-        StringAssert.DoesNotContain("\"battle_id\"", body);
+        using var doc = JsonDocument.Parse(body);
+        var root = doc.RootElement;
+
+        Assert.That(root.GetProperty("matching_state").GetInt32(), Is.EqualTo(3004));
+        var battleId = root.GetProperty("battle_id").GetString();
+        Assert.That(battleId, Is.Not.Null.And.Not.Empty);
+        var nodeUrl = root.GetProperty("node_server_url").GetString();
+        Assert.That(nodeUrl, Does.StartWith("ws://"));
     }
 }