例

    using UnityEngine;
    using UnityEngine.Networking;
    public class MyBehaviour : MonoBehaviour {
            StartCoroutine(GetAssetBundle());
        }
        IEnumerator GetAssetBundle() {
            UnityWebRequest www = UnityWebRequest.GetAssetBundle("http://www.my-server.com/myData.unity3d");
                Debug.Log(www.error);
            }
            else {
                AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(www);
            }
        }