public static async Task DownloadFile(Dictionary <string, object> message, IFolder downloadMainFolder)
{
var key = (string)message["DownloadKey"];
if (downloading.Contains(key))
{
return;
}
downloading.Add(key);
Debug.WriteLine("Receive begin");
int slicesCount;
if (message["SlicesCount"] is Int64)
{
slicesCount = (int)(long)message["SlicesCount"];
}
else
{
slicesCount = (int)message["SlicesCount"];
}
var fileName = (string)message["FileName"];
var dateModifiedMilliseconds = (long)message["DateModified"];
var dateCreatedMilliseconds = (long)message["DateCreated"];
var fileSize = (long)message["FileSize"];
var directory = (string)message["Directory"];
var serverIP = (string)message["ServerIP"];
var dateModified = DateTimeExtension.FromUnixTimeMilliseconds(dateModifiedMilliseconds);
var dateCreated = DateTimeExtension.FromUnixTimeMilliseconds(dateCreatedMilliseconds);
if (downloadMainFolder == null)
{
await ReceiveFailed(serverIP, key, "Default downloads folder hasn't been set.");
return;
}
IFolder downloadFolder = await CreateDirectoryIfNecessary(downloadMainFolder, directory);
IFile file = await CreateFile(downloadFolder, fileName);
if (file.Name != fileName) //File already existed, so new name generated for it. We should update database now.
{
await DataStorageProviders.HistoryManager.OpenAsync();
DataStorageProviders.HistoryManager.UpdateFileName(requestGuid, fileName, file.Name, downloadFolder.Path);
DataStorageProviders.HistoryManager.Close();
await DataStorageProviders.HistoryManager.OpenAsync();
var x = DataStorageProviders.HistoryManager.GetItem(requestGuid);
var y = x.Data as ReceivedFileCollection;
var z = y.Files[0].Name;
var t = x.Id;
DataStorageProviders.HistoryManager.Close();
}
using (var stream = await file.OpenAsync(PCLStorage.FileAccess.ReadAndWrite))
{
for (uint i = 0; i < slicesCount; i++)
{
string url = "http://" + serverIP + ":" + Constants.CommunicationPort.ToString() + "/" + key + "/" + i + "/";
byte[] buffer = await DownloadDataFromUrl(url);
int expectedLength;
if (i == (slicesCount - 1))
{
expectedLength = (int)(fileSize % ((long)Constants.FileSliceMaxLength));
}
else
{
expectedLength = (int)Constants.FileSliceMaxLength;
}
if (buffer.Length != expectedLength)
{
Debug.WriteLine("Slice length violation! Will retry...");
i--;
continue;
}
await stream.WriteAsync(buffer, 0, buffer.Length);
InvokeProgressEvent((uint)slicesCount, i, FileTransferState.DataTransfer);
}
await stream.FlushAsync();
}
//Debug.WriteLine(dateModified);
//Debug.WriteLine(dateCreated);
//System.IO.File.SetLastWriteTime(file.Path, dateModified);
//System.IO.File.SetCreationTime(file.Path, dateCreated);
downloading.Remove(key);
InvokeFinishedEvent((uint)slicesCount);
await ReceiveSuccessful(serverIP, key);
}
