Mirror transport

Feature description

Mirror transport is a Unity-only sub-capability of Multiplayer lobby. It is not a replacement for the main SDK. It lets projects that already use Mirror connect Mirror send/receive traffic to the IGP room data plane.

Supported engines

Engine	Status	Notes
Unity	Preview	Provided through cn.indiegp.sdk.unity.mirror-transport.
GameMaker	Not applicable	GameMaker does not use Mirror.
Godot	Not applicable	Godot does not use Unity Mirror.

Prerequisites

• The project already uses Unity Mirror.
• Mirror is v89.0.0 or newer; v90.0.0 or newer is recommended.
• cn.indiegp.sdk.unity main package is installed.
• cn.indiegp.sdk.unity.mirror-transport optional package is installed.
• The main Rooms flow is complete.

By engine

Unity

Install the main package first:

cn.indiegp.sdk.unity

If the project already uses Mirror, install the optional package:

cn.indiegp.sdk.unity.mirror-transport

Keep the following objects in the scene:

IGPRuntimeManager
IGPMirrorTransport
Mirror NetworkManager

Then point Mirror NetworkManager.transport to IGPMirrorTransport.

Business code still follows the original Mirror pattern; IGP only connects the underlying transport to the current room.

using Mirror;
using UnityEngine;
using IGP.UnitySDK.MirrorTransport;

public sealed class MirrorTransportCheck : MonoBehaviour
{
    [SerializeField] private NetworkManager networkManager;
    [SerializeField] private IGPMirrorTransport igpTransport;

    private void Awake()
    {
        networkManager.transport = igpTransport;
    }
}

The full sample project is samples/unity/MirrorTransportDemo.

GameMaker

GameMaker does not use Unity Mirror, so this transport package is not applicable.

Godot

Godot does not use Unity Mirror, so this transport package is not applicable.

Self-test

Engine	Checkpoint
Unity	Mirror NetworkManager.transport points to IGPMirrorTransport, and host / client can connect through the IGP room.
GameMaker	Not applicable.
Godot	Not applicable.

Troubleshooting

• Mirror still uses the original transport: check the NetworkManager.transport reference.
• IGPMirrorTransport cannot be found: confirm the optional Mirror package is installed.
• The room can be entered but Mirror is unavailable: first confirm the main package room flow, then debug Mirror configuration.