/// <summary>
/// 下载文件
/// </summary>
/// <param name="fileName"></param>
/// <param name="fileMode">Append为断点续传，Create为新建文件</param>
/// <param name="remoteFileSize">Append模式下必传，远端文件大小</param>
/// <param name="remoteLastModified">Append模式下必传，远端文件最后修改日期</param>
/// <returns></returns>
public static IEnumerator DownloadFile(string fileName, OnDownloadFileFinished onDownloadFileFinidhed,
FileMode fileMode = FileMode.Create, long remoteFileSize = 0, DateTime remoteLastModified = new DateTime())
{
string url = BaseDownloadingURL + fileName;
string filePath = Path.Combine(AssetBundleUtility.LocalAssetBundlePath, fileName);
using (UnityWebRequest request = new UnityWebRequest(url, UnityWebRequest.kHttpVerbGET))
{
if (File.Exists(filePath) && fileMode == FileMode.Append)
{
FileInfo localFileInfo = new FileInfo(filePath);
bool isOutdate = remoteLastModified > localFileInfo.LastWriteTime;
if(localFileInfo.Length == remoteFileSize && !isOutdate)//已下载完成
{
onDownloadFileFinidhed(fileName, null);
yield break;
}
if (localFileInfo.Length < remoteFileSize && !isOutdate)//继续下载
{
request.downloadHandler = new DownloadHandlerFile(filePath, FileMode.Append);
request.SetRequestHeader("Range", string.Format("bytes={0}-", localFileInfo.Length));
}
else//重新下载
{
request.downloadHandler = new DownloadHandlerFile(filePath);
}
}
else
{
request.downloadHandler = new DownloadHandlerFile(filePath);
}
CurrentRequest = request;
yield return request.Send();
string error = request.isError ?
string.Format("DownloadFile Failed - url: {0}, responseCode: {1}, error: {2}", url, request.responseCode, request.error)
: null;
onDownloadFileFinidhed(fileName, error);
}
CurrentRequest = null;
}
static IEnumerator UploadDonation(UnityWebRequest webRequest, Action onDataReceived)
{
if(webRequest == null) yield break;
yield return webRequest.Send();
if(webRequest.isError)
{
Debug.Log(webRequest.error);
}
else
{
Debug.Log("Upload donation, WebRequest " + webRequest.url + " done!");
if(onDataReceived != null) onDataReceived();
}
}
IEnumerator LoadManifestFromWebRequest()
{
var url = GetManifestURL();
var www = new UnityWebRequest(url) { downloadHandler = new DownloadHandlerAssetBundle(url, 0) };
yield return www.Send();
var assetBundle = ((DownloadHandlerAssetBundle)(www.downloadHandler)).assetBundle;
var assets = assetBundle.LoadAllAssets();
AddLoadedBundleToManager(assetBundle, assets[0].name);
manifest = (AssetBundleManifest)assets[0];
}
static IEnumerator PerformWebRequest(UnityWebRequest webRequest, Action<UnityWebRequest> onDataReceived = null)
{
if(webRequest == null) yield break;
yield return webRequest.Send();
if(webRequest.isError)
{
Debug.Log(webRequest.error);
}
else
{
Debug.Log("WebRequest " + webRequest.url + " done!");
if(onDataReceived != null) onDataReceived(webRequest);
}
}
private IEnumerator ProcessRequest(UnityWebRequest req)
{
yield return req.Send();
if (req.isError) {
if (!WasAborted) {
string errorMessage = "Failed web request: " + req.error;
Common.Log(errorMessage);
self.FinishWithRequest(this, new HttpResponse(new Exception(errorMessage)));
}
}
else {
// Extracts asset bundle
HttpResponse response = new HttpResponse();
response.Body = Request.downloadHandler.data;
response.StatusCode = (int)Request.responseCode;
foreach (var pair in Request.GetResponseHeaders()) {
response.Headers[pair.Key] = pair.Value;
}
LogResponse(response);
self.FinishWithRequest(this, response);
}
}
