/// <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;
}
/// <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;
}
