public void Init(string path, object param, ProgressHandle onProgress, LoadedHandle onLoaded,
bool async = true)
{
State = LoaderState.None;
Path = path;
Param = param;
IsAsync = async;
m_onProgress = onProgress;
m_onLoaded = onLoaded;
}
private void ChangeProgress(int value)
{
if (connectToServerButton.InvokeRequired)
{
ProgressHandle progressHandle = new ProgressHandle(ChangeProgress);
this.Invoke(progressHandle, new object[] { value });
}
else
{
progressBar1.Value = value;
}
}
public virtual void Reset()
{
State = LoaderState.None;
Path = "";
Param = null;
IsAsync = false;
Data = null;
m_onProgress = null;
m_onLoaded = null;
}
private IEnumerator _download()
{
//避免下载完了,但是生成文件问题
if (DownloadCacheFileLenght >= ServeLength)
{
Complete();
yield break;
}
var result = webRequest.SendWebRequest();
if (IsContinueDownload)
{
while (webRequest.responseCode != 206)
{
Debug.LogError($"无法继续下载,本地大小:{DownloadCacheFileLenght}," +
$"文件总大小:{ServeLength}");
yield return(null);
}
}
while (!result.isDone)
{
DownloadInfo.SetDownloadLenght(DownloadCacheFileLenght + webRequest.downloadedBytes);
ProgressHandle?
.Invoke(
new DownloadProgressInfo(webRequest.downloadedBytes - oldLenght,
GetProgress(webRequest.downloadedBytes), DownloadInfo),
DownloadMessageCode.GetMessage((int)DownloadMessageCodeTable.载中));
oldLenght = webRequest.downloadedBytes;
yield return(null);
}
if (!string.IsNullOrEmpty(webRequest.error))
{
ErrorHandle?.Invoke($"下载失败.\n" +
$"错误信息为:{webRequest.error}\n" +
$"网络状态码:{webRequest.responseCode}");
yield break;
}
Complete();
}
private async void _updateServerFileInfo(Dictionary <string, string> headers)
{
ProgressHandle?.Invoke(new DownloadProgressInfo(0),
DownloadMessageCode.GetMessage((int)DownloadMessageCodeTable.开始确认远程));
#if UNITY
ServicePointManager.ServerCertificateValidationCallback = MyRemoteCertificateValidationCallback;
#endif
MyWebClient client = new MyWebClient();
HttpWebRequest request = WebRequest.CreateHttp(new Uri(Url));
if (headers != null)
{
foreach (var pair in headers)
{
request.Headers.Add(pair.Key, pair.Value);
}
}
request.Timeout = TimeOut;
WebResponse response;
try
{
response = await request.GetResponseAsync();
}
catch (WebException webEx)
{
ErrorHandle?.Invoke($"确认远程文件时出现网络错误.\n" +
$"响应状态为:{webEx.Status}\n" +
$"错误信息:{webEx.Message}\n" +
$"堆栈信息:{webEx.StackTrace}");
return;
}
catch (Exception e)
{
ErrorHandle?.Invoke($"确认远程文件时出现错误.\n" +
$"错误信息:{e.Message}\n" +
$"堆栈信息:{e.StackTrace}");
return;
}
var contentLength = response.Headers.Get(ContentLengthHeaderName);
if (string.IsNullOrEmpty(contentLength))
{
ErrorHandle?.Invoke($"确认远程文件失败了,没有获取到文件大小.");
return;
}
else
{
long lenght;
long.TryParse(contentLength, out lenght);
ServeLength = (ulong)lenght;
}
var p = Url.Split('/', '\\');
ServerFileName = p.Last();
ServerMd5 = client.Headers.Get(ContentMD5HeaderName);
response.Close();
response.Dispose();
request.Abort();
if (string.IsNullOrEmpty(SaveFileName))
{
SaveFileName = ServerFileName;
}
ReadServerFileInfoFile();
DownloadCacheFileLenght = GetDownloadCacheFileLenght();
CheckIsContinueDownload();
if (_updateServerFile())
{
DownloadInfo.SetTotalLength(ServeLength);
DownloadInfo.SetDownloadLenght(DownloadCacheFileLenght);
if (IsContinueDownload)
{
//继续下载
ProgressHandle?.Invoke(new DownloadProgressInfo(1),
DownloadMessageCode.GetMessage((int)DownloadMessageCodeTable.确认结束_继续下载));
}
else
{
Utility.FileUtil.DeleteFile(SaveFilePath);
Utility.FileUtil.DeleteFile(SaveFilePathTemp);
if (DownloadCacheFileLenght == 0)
{
//开始下载
ProgressHandle?.Invoke(new DownloadProgressInfo(1),
DownloadMessageCode.GetMessage((int)DownloadMessageCodeTable.确认结束_开始下载));
}
else
{
//重新下载
ProgressHandle?.Invoke(new DownloadProgressInfo(1),
DownloadMessageCode.GetMessage((int)DownloadMessageCodeTable.确认结束_重新下载));
}
}
DownloadStartHandle?.Invoke(DownloadInfo);
Download();
}
}
