/// <summary>
/// Receives a file request packet and either starts a file transfer or cancels an existing one.
/// </summary>
/// <param name="packet"></param>
private void ProcessFileTransferRequest(FileRequestPacket packet)
{
if (packet.FileRequestType == FileRequestTypeEnum.StartFileRequest)
{
string serverFilePath = DirectoryPaths.ContentPackageDirectoryPath + packet.FileName;
// Safety check - make sure the file exists and it has an appropriate extension.
if (Path.GetExtension(packet.FileName) != FileExtensionFactory.GetFileExtension(FileTypeEnum.ContentPackage) ||
!File.Exists(serverFilePath))
{
return; // EARLY EXIT
}
// Build a new client and add them to the list.
FileTransferProgress client = new FileTransferProgress
{
BytesSent = 0,
FilePath = serverFilePath
};
FileTransferClients.Add(packet.SenderConnection, client);
// Send the size of the file back to client so they can track the download's progress.
StreamingFileDetailsPacket fileDetails = new StreamingFileDetailsPacket
{
FileSize = new FileInfo(serverFilePath).Length
};
Agent.SendPacket(fileDetails, packet.SenderConnection, NetDeliveryMethod.ReliableOrdered);
}
else if (packet.FileRequestType == FileRequestTypeEnum.CancelFileRequest)
{
// Remove a client from the streaming list.
FileTransferClients.Remove(packet.SenderConnection);
}
}
/// <summary>
/// Sends a request to stop a file transfer.
/// </summary>
private void CancelRequestFileFromServer()
{
if (FileStreamStatus == FileStreamerStatusEnum.Downloading)
{
FileRequestPacket packet = new FileRequestPacket
{
FileRequestType = FileRequestTypeEnum.CancelFileRequest
};
FileStreamStatus = FileStreamerStatusEnum.Stopped;
WinterEngineService.NetworkClient.SendPacket(packet, NetDeliveryMethod.ReliableSequenced);
// Remove partially downloaded file, if it exists.
string filePath = DirectoryPaths.ContentPackageDirectoryPath + LastReceivedFile;
if (File.Exists(filePath))
{
File.Delete(filePath);
}
FileSize = 0;
LastReceivedFile = "";
MissingFiles.Clear();
}
}
/// <summary>
/// Sends a request to start initiating a specific file's data transfer
/// </summary>
/// <param name="fileName"></param>
private void RequestFileFromServer(string fileName)
{
FileStreamStatus = FileStreamerStatusEnum.Downloading;
FileRequestPacket packet = new FileRequestPacket
{
FileRequestType = FileRequestTypeEnum.StartFileRequest,
FileName = fileName
};
WinterEngineService.NetworkClient.SendPacket(packet, NetDeliveryMethod.ReliableSequenced);
}