protected virtual void OnBlockDownloadFileCompleted(BlockThead blockThread, System.ComponentModel.AsyncCompletedEventArgs args)
{
if (this.BlockDownloadFileCompleted != null)
{
this.BlockDownloadFileCompleted(blockThread, args);
}
}
private void OnBlockDownloadFileCompletedHandler(object sender, System.ComponentModel.AsyncCompletedEventArgs args)
{
async_children_thread.Remove(sender);
async_children_finished.Add(sender);
if (args.Error != null)
{
Debug.LogWarning(args.Error);
if (args.Error is CacheFileException)
{
string tmpName = ((CacheFileException)args.Error).fileName;
File.Delete(tmpName);
Debug.Log("delete error file " + tmpName);
}
async_children_error.Add(args);
}
if (async_children_thread.Count == 0 && async_children_error.Count == 0 && async_children_finished.Count > 0)
{
async_children_finished.Sort(new BlockTheadComparer());
BlockThead block = null; // (BlockThead) async_children_finished[0]; //find first
string tmpFileName = string.Empty;
int num2 = 32768; //32KB
byte[] array = new byte[num2];
FileStream tmpFs;
int num4 = 0;
using (FileStream fileStream = new FileStream(fileName, FileMode.Create)) {
for (int i = 0; i < async_children_finished.Count; i++)
{
block = (BlockThead)async_children_finished[i];
tmpFileName = GetTmpFileName(block.fileName);
using (tmpFs = new FileStream(tmpFileName, FileMode.Open)) {
while ((num4 = tmpFs.Read(array, 0, num2)) != 0)
{
fileStream.Write(array, 0, num4);
}
}
File.Delete(tmpFileName);
Debug.LogFormat("delete file {0}", tmpFileName);
}
}
//delete etag
string etagFileName = GetETagfiedFileName(fileName);
File.Delete(etagFileName);
this.OnDownloadFileCompleted(args);
}
else if (async_children_thread.Count == 0 && async_children_error.Count > 0)
{
this.OnDownloadFileCompleted((System.ComponentModel.AsyncCompletedEventArgs)async_children_error[0]);
}
}
public void DownloadFileMultiAsync(System.Uri address, string fileName, object userToken, int maxThreading = 3)
{
if (address == null)
{
throw new ArgumentNullException("address");
}
if (fileName == null)
{
throw new ArgumentNullException("fileName");
}
CheckFileDirectory(fileName);
System.Exception ex = null;
long len = GetContentLength(address, out ex);
if (ex != null)
{
this.OnBlockDownloadFileCompleted(null, new System.ComponentModel.AsyncCompletedEventArgs(ex, false, userToken));
return;
}
progressChangedEventArgs = new DownloadingProgressChangedEventArgs(0, len, userToken);
bool delCache = true;
if (this.responseHeaders != null)
{
//check etag
string svrETag = responseHeaders["ETag"];
if (string.IsNullOrEmpty(svrETag))
{
Debug.LogWarningFormat("url {0} Etag is Null", fileName);
svrETag = responseHeaders["Last-Modified"];
}
if (string.IsNullOrEmpty(svrETag))
{
Debug.LogWarningFormat("url {0} Last-Modified is Null", fileName);
svrETag = System.DateTime.Now.ToString();
}
delCache = CheckCacheModified(fileName, svrETag);
RecordETag(fileName, svrETag);
//debug
// Debug.LogFormat("clear cache {0} ={1}",delCache,fileName);
// var sb = new System.Text.StringBuilder ();
// foreach (var kv in responseHeaders.AllKeys) {
// sb.AppendFormat ("{0}={1}\r\n", kv, responseHeaders[kv]); //Last-Modified=Tue, 21 Nov 2017 02:03:05 GMT
// // Debug.LogFormat("{0}={1}",kv,responseHeaders[kv]);//ETag="5a138959-c68171c"
// }
// Debug.Log (sb.ToString ());
}
lock (this) {
this.SetBusy();
this.fileName = fileName;
this.async = true;
int block = (int)len / maxThreading;
int from = 0;
int to = -1;
string childrenFileName = null;
this.async_children_thread.Clear();
this.async_children_finished.Clear();
this.async_children_error.Clear();
for (int i = 0; i < maxThreading; i++)
{
from = to + 1;
if (i == maxThreading - 1)
{
to = (int)len - 1;
}
else
{
to = from + block;
}
childrenFileName = string.Format("{0}.{1}", fileName, i);
var blockThead = new BlockThead();
object[] parameter = new object[] {
address,
childrenFileName,
userToken,
new int[] { from, to },
blockThead
};
blockThead.index = i;
blockThead.fileName = childrenFileName;
blockThead.clearCache = delCache;
blockThead.async_thread = new Thread(
delegate(object state) {
object[] array = (object[])state;
try {
string fname = (string)array[1];
int[] fromAndTo = (int[])array[3];
bool clearCache = ((BlockThead)array[4]).clearCache;
if (clearCache && File.Exists(GetTmpFileName(fname)))
{
File.Delete(GetTmpFileName(fname));
}
this.DownloadBlockFileCore((System.Uri)array[0], fname, array[2], fromAndTo[0], fromAndTo[1]);
this.OnBlockDownloadFileCompleted(blockThead, new System.ComponentModel.AsyncCompletedEventArgs(null, false, array[2]));
} catch (ThreadInterruptedException e) {
this.OnBlockDownloadFileCompleted(blockThead, new System.ComponentModel.AsyncCompletedEventArgs(e, true, array[2]));
} catch (Exception error) {
this.OnBlockDownloadFileCompleted(blockThead, new System.ComponentModel.AsyncCompletedEventArgs(error, false, array[2]));
}
});
blockThead.parameter = parameter;
this.async_children_thread.Add(blockThead);
blockThead.Start();
}
}
}
