protected override async void OnLaunched(LaunchActivatedEventArgs e)
{
//is the application being launched by the jumplist?
//if so then the tileid is set to app and there would be arguments supplied.
var jumpList = e.TileId == "App" && !string.IsNullOrEmpty(e.Arguments);
if (jumpList)
{
try
{
//if it is a jumplist item, then you can locate the file by the path provided in the arguments.
var file = await Windows.Storage.StorageFile.GetFileFromPathAsync(e.Arguments);
if (RootFrame.Content == null)
{
// then navigate to the page passing the file.
RootFrame.Navigate(typeof(MyNotepad.Views.MainPage), file);
}
else
{
// if we've already navigated to the file, because the content is not null, then no need in
// navigating again.
FileReceived?.Invoke(this, file);
}
}
catch (Exception) { throw; }
}
else
{
RootFrame.Navigate(typeof(MyNotepad.Views.MainPage), e.Arguments);
}
Window.Current.Activate();
}
private void DecoderOnMessageDecoded(object sender, MessageDecodedEventArgs eventArgs)
{
if (eventArgs.Message != null)
{
try
{
if (eventArgs.Message is DataFrame dataFrame && dataFrame.Items != null)
{
DataPointValue[] files = dataFrame.Items.Where(i => i is OPCUAFile)
.ToArray();
foreach (OPCUAFile file in files)
{
dataFrame.Items.Remove(file);
FileReceived?.Invoke(this, new FileReceivedEventArgs(file, eventArgs.Topic, dataFrame.NetworkMessageHeader.PublisherID.Value));
}
if (dataFrame.Items.Count > 0)
{
MessageReceived?.Invoke(this, eventArgs);
}
}
else if (eventArgs.Message is MetaFrame metaFrame)
{
MetaMessageReceived?.Invoke(this, eventArgs);
}
else
{
UnknownMessageReceived?.Invoke(this, eventArgs);
}
}
private void dataGridView1_DragDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
var files = (string[])e.Data.GetData(DataFormats.FileDrop);
try
{
toolStripProgressBar1.Visible = true;
toolStripProgressBar1.Value = 0;
toolStripProgressBar1.Maximum = files.Length;
foreach (var file in files)
{
tslFileCount.Text = System.IO.Path.GetFileName(file);
toolStripProgressBar1.Value++;
var item = FileReceived?.Invoke(file); // do your upload or local copy here
if (item != null)
{
Add(item);
}
}
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
}
finally
{
UpdateStatusBar();
toolStripProgressBar1.Visible = false;
}
}
}
private void ListenData(Connection connection)
{
while (true)
{
try
{
var data = connection.TransferProtocol.Read();
if (data.Type == TrasnsferDataType.Command)
{
_logger.LogMessage("Command received from " + connection.Id + " " + connection.Name);
CommandReceived?.Invoke(connection.Id, (CommandTrasnsferData)data);
}
else if (data.Type == TrasnsferDataType.DataObject)
{
_logger.LogMessage("Data received from " + connection.Id + " " + connection.Name);
DataReceived?.Invoke(connection.Id, (ObjectTrasnsferData)data);
}
else
{
_logger.LogMessage("File received from " + connection.Id + " " + connection.Name);
FileReceived?.Invoke(connection.Id, (FileTransferData)data);
}
}
catch (Exception ex)
{
_logger.LogError("Disconected: " + connection.Id + " " + connection.Name + " Error connection: " + ex.Message);
Disconect(connection);
return;
}
}
}
private async void _scheduler_Trigger(object sender, MessageEventArgs e)
{
if (!_running || _executing)
{
return;
}
_executing = true;
try
{
var files = await _client.ReceiveFilesAsync(_path, _fileMask);
if (files != null)
{
foreach (var file in files.Where(x => !x.IsError))
{
FileReceived?.Invoke(this, new ReceiveFileEventArgs(file));
}
}
}
catch (Exception ex)
{
_logger?.Error($"Reading files from path '{_path}' using filemask '{_fileMask}' was unsuccessful.", ex);
}
_executing = false;
}
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected override async void OnLaunched(LaunchActivatedEventArgs e)
{
var jumpList = e.TileId == "App" && !string.IsNullOrEmpty(e.Arguments);
if (jumpList)
{
try
{
var file = await Windows.Storage.StorageFile.GetFileFromPathAsync(e.Arguments);
if (RootFrame.Content == null)
{
//RootFrame.Navigate(typeof(MainPage), file);
RootFrame.Navigate(typeof(MainPage /*RichBox*/), file);
}
else
{
FileReceived?.Invoke(this, file);
}
}
catch (Exception)
{
throw;
}
}
else
{
//RootFrame.Navigate(typeof(MainPage), e.Arguments);
RootFrame.Navigate(typeof(MainPage /*RichBox*/), e.Arguments);
}
Window.Current.Activate();
}
public override async Task OnStartAsync(StartKind startKind, IActivatedEventArgs args)
{
string arguments = string.Empty;
if (DetermineStartCause(args) == AdditionalKinds.JumpListItem)
{
arguments = (args as LaunchActivatedEventArgs).Arguments;
FileReceived?.Invoke(this, arguments);
}
NavigationService.Navigate(typeof(Views.MainPage), arguments);
}
public void TreatFileReceived(string ipAddress, int port)
{
try
{
IPAddress ip = IPAddress.Parse(ipAddress);
TcpListener tcpListener = new TcpListener(ip, port);
tcpListener.Start();
while (true)
{
Socket socket = tcpListener.AcceptSocket();
if (socket.Connected)
{
string fileName = string.Empty;
NetworkStream networkStream = new NetworkStream(socket);
int thisRead = 0;
int blockSize = 1024;
Byte[] dataByte = new Byte[blockSize];
lock (this)
{
string pathDirectory = @"C:\Users\D-bugging\Desktop\TEMP\";
socket.Receive(dataByte);
int fileNameLenght = BitConverter.ToInt32(dataByte, 0);
fileName = Encoding.ASCII.GetString(dataByte, 4, fileNameLenght);
Stream fileStream = File.OpenWrite(pathDirectory + fileName);
fileStream.Write(dataByte, 4 + fileNameLenght, (1024 - (4 + fileNameLenght)));
while (true)
{
thisRead = networkStream.Read(dataByte, 0, blockSize);
fileStream.Write(dataByte, 0, thisRead);
if (thisRead == 0)
{
break;
}
}
fileStream.Close();
}
FileReceived?.Invoke(this, fileName);
socket = null;
}
}
}
catch
{
throw;
}
}
private void WriteFullFile(FileSystemInfo directory, TransportFileDelivery delivery, bool overwrite)
{
var fileName = delivery.TransportFile.Name;
var filePath = Path.Combine(directory.FullName, fileName);
if (overwrite)
{
DeleteExistingFile(delivery, directory);
}
using (var fs = File.Open(filePath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read))
delivery.TransportFile.WriteTo(fs);
FileReceived?.Invoke(filePath);
}
protected override void OnFileActivated(FileActivatedEventArgs args)
{
if (!args.Files.Any())
{
return;
}
if (args.PreviousExecutionState == ApplicationExecutionState.Running)
{
FileReceived?.Invoke(this, args.Files.First() as Windows.Storage.StorageFile);
}
else
{
RootFrame.Navigate(typeof(MainPage /*RichBox*/), args.Files.First());
}
//RootFrame.Navigate(typeof(MainPage), args.Files.First());
Window.Current.Activate();
}
/// <summary>
/// Bind this event to the server or client so that it can process incoming packets, otherwise this class is useless
/// </summary>
/// <example>client.PacketReceived += (sender, packet) => fileTransfer.OnPacketReceived(server, packet);</example>
/// <example>server.PacketReceived += (sender, packetArgs) => fileTransfer.OnPacketReceived(packetArgs.Client.EndPoint, packetArgs.Packet);</example>
/// <param name="endPoint">The endpoint from which we received the packet. This is mostly used server side to prevent id clashes.</param>
/// <param name="packet">The packet that was received</param>
public void OnPacketReceived(EndPoint endPoint, IPacket packet)
{
if (!(packet is ChunkedDataPacket p))
{
return;
}
var f = receivingFiles.FirstOrDefault(x => x.UniqueId == p.UniqueId && x.EndPoint == endPoint);
if (f == null)
{
f = new ReceivingFileProcess(CreateNewTempFile(), p.UniqueId, endPoint);
receivingFiles.Add(f);
Logger.Info("Receiving a new file from {endPoint}, saving it to {path}", endPoint, f.Stream.Name);
}
f.Stream.Position = p.Offset;
f.Stream.Write(p.Data, 0, p.Data.Length);
f.Stream.Flush();
f.ReceivedChunks++;
Logger.Debug("Received file chunk {chunk}/{totalChunks} ({pct})", f.ReceivedChunks, p.TotalChunks, (float)f.ReceivedChunks / p.TotalChunks);
if (f.ReceivedChunks == p.TotalChunks)
{
Logger.Info("Received all file chunks");
f.Stream.Position = 0;
if (FileReceived != null && FileReceived.GetInvocationList().Length > 0)
{
FileReceived.Invoke(this, f.Stream);
}
else
{
f.Stream.Close();
}
receivingFiles.RemoveAll(x => x.UniqueId == p.UniqueId && x.EndPoint == endPoint);
}
}
/// <summary>
/// Fires when a packet is received - Processes packets
/// </summary>
/// <param name="packet"></param>
private void OnPacketReceived(Packet packet)
{
try
{
PacketReceived?.Invoke(packet);
if (packet.PacketNumber + 1 != packet.TotalPackets)
{
tempPackets.Add(packet);
}
else
{
var fileData = PacketHandler.FromPackets(tempPackets.ToArray());
FileReceived?.Invoke(fileData);
tempPackets.Clear();
}
}
catch (Exception ex)
{
TcpError?.Invoke(ex);
}
}
public void EndReceive()
{
if (_remainingData > 0)
{
throw new InvalidOperationException("_remainingData is not 0");
}
_stream.Dispose();
_stream = null;
if (!string.IsNullOrEmpty(_temporaryFile))
{
var path = Path.GetDirectoryName(LocalPath);
if (path.Length > 0)
{
Directory.CreateDirectory(path); // make sure directory exists
}
System.IO.File.Copy(_temporaryFile, LocalPath, true);
new FileInfo(LocalPath).LastWriteTimeUtc = FileDateUtc;
}
FileReceived?.Invoke(this);
}
//this event fires when a user double-clicks on a text file.
protected override void OnFileActivated(FileActivatedEventArgs args)
{
//should this be removed or called prior to custom code.
//base.OnFileActivated(args);
//if no files passed, gracefully exit event handler.
if (!args.Files.Any())
{
return;
}
//if the application is already running, no need to navigate, just raise the event handler to load the file.
//otherwise navigate to the main page and pass in the file to the OnNavigatedTo event handler.
if (args.PreviousExecutionState == ApplicationExecutionState.Running)
{
FileReceived?.Invoke(this, args.Files.First() as Windows.Storage.StorageFile);
}
else
{
RootFrame.Navigate(typeof(MyNotepad.Views.MainPage), args.Files.First());
}
Window.Current.Activate();
}
private void WriteChunkedFile(FileSystemInfo directory, TransportFileDelivery delivery, FileTransferProperties props, bool overwrite)
{
var fileName = delivery.TransportFile.Name;
var filePath = GenerateUniqueFileName(Path.Combine(directory.FullName, fileName), overwrite);
var uniqueTransferId = props.TransferId ?? 0;
var tmpName = Path.ChangeExtension(filePath, $".{uniqueTransferId}.temp");
_log.LogDebug($"Processing chunk no. {props.ChunkNumber} - is last {props.LastChunk}");
if (filePath == null)
{
return; // only to make static code analysis happy.
}
try
{
long maxChunks;
if (props.LastChunk)
{
maxChunks = props.ChunkNumber + 1;
}
else
{
maxChunks = props.FileSize / props.ChunkSize;
maxChunks += props.FileSize % props.ChunkSize != 0 ? 1 : 0;
}
var headerSizeInBytes = ChunkedFileHeader.GetHeaderLengthInBytes(maxChunks);
// Wait here to write to file
var log = _log; // needed to make static code analysis happy (avoid using variable in and outside synchronization blocks warning)
lock (string.Intern(tmpName))
{
var tmpFileSize = headerSizeInBytes + props.FileSize;
CheckTempFileConsistency(tmpName, uniqueTransferId, tmpFileSize);
using (var fs = new FileStream(tmpName, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read))
{
using (var mmf = MemoryMappedFile.CreateFromFile(fs, null, tmpFileSize, MemoryMappedFileAccess.ReadWrite, HandleInheritability.Inheritable, false))
{
var fileHeader = ChunkedFileHeader.ReadFromMemoryMappedFile(mmf, maxChunks);
using (var accessor = mmf.CreateViewStream(headerSizeInBytes + props.ChunkOffset, 0))
{
delivery.TransportFile.WriteTo(accessor);
}
fileHeader.ChunksReceived[props.ChunkNumber] = true;
fileHeader.WriteToMemoryMappedFile(mmf);
var isFileComplete = fileHeader.ChunksReceived.All(b => b);
if (!isFileComplete)
{
return;
}
try
{
if (overwrite)
{
DeleteExistingFile(delivery, directory);
}
SaveCompletedFileContent(mmf, filePath, headerSizeInBytes, props.FileSize);
log.LogInformation($"File written to {filePath}");
}
catch (IOException e)
{
log.LogError($"Could not move file from {tmpName} to {filePath} because of {e.Message}");
throw;
}
}
}
File.Delete(tmpName);
}
FileReceived?.Invoke(filePath);
}
catch (IOException e)
{
_log.LogError($"Could not handle file {tmpName} -> {filePath}: '{e.Message}'");
}
}
internal void InvokeFileReceived(string filePath)
{
FileReceived?.Invoke(this, filePath);
}
/// <summary>
/// Raises the FileReceived event;
/// </summary>
/// <param name="e"></param>
protected override void OnFileReceived(FileEventArgs e)
{
FileReceived?.Invoke(this, e);
}
internal void InvokeFileReceived(int id, string filePath)
{
FileReceived?.Invoke(id, filePath);
}
// Opens a socket with the given Ip and Port and closes all other sockets associated with this method
public static void OpenSocket(IPAddress ip, int port)
{
// Try catch used to make sure that any internal errors are caught and the program doesn't crash
try
{
// Task.Run in conjunction with a lambda function allows for asynchronous in-line codeblocks
Task.Run(() =>
{
// The using statement allows an instance of the Socket class to be easily disposed when the method returns
using (var _soc = new Socket(SocketType.Dgram, ProtocolType.Udp)
{
SendBufferSize = 131072, ReceiveBufferSize = 131072
})
{
// Queues the newly created socket
_openSockets.Enqueue(_soc);
// Closes all excess sockets created by this method
while (_openSockets.Count > 1)
{
// Grabs the first socket in the queue
var _closeSoc = _openSockets.Dequeue();
// Raises the StatusUpdated event in order to notify the UI of a socket closing
StatusUpdated?.Invoke("Closed " + _closeSoc.LocalEndPoint.ToString());
// Closes the socket
_closeSoc.Close();
_closeSoc = null;
}
// Creates an endpoint which is either derived from the given IP or any ip if the given ip is null
var _localEndPoint = (ip == null) ? new IPEndPoint(IPAddress.Any, port) : new IPEndPoint(ip, port);
// Creates an endpoint to store the address of whatever client sends a message
EndPoint _remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
// Binds the socket to the local end point in order to retrieve messages
_soc.Bind(_localEndPoint);
// Defines a buffer in which to store incoming data
var _buff = new byte[131072];
// Raises the StatusUpdated event in order to notify the UI of a socket opening
StatusUpdated?.Invoke("Opened " + _localEndPoint.ToString());
// Loops message recieve and send to echo back client messages
while (_soc != null)
{
// Retrieves the number of new bytes in the buffer
var _bytes = _soc.ReceiveFrom(_buff, 0, _buff.Length, SocketFlags.None, ref _remoteEndPoint);
// Converts the buffer to a string message
var _msg = Encoding.ASCII.GetString(_buff, 0, _bytes);
// Vars to store the file parameters
var _fileName = "";
var _fileExtension = "";
var _fileSize = 0;
// Header before file "#FILE <FileName> <FileExtention>"
if (_msg.Split('*')[0] == "#FILE")
{
// Grabs the file parameters from the header message
_fileName = _msg.Split('*')[1];
_fileExtension = _msg.Split('*')[2];
// Notifies the UI that a file is incoming
MessageReceived?.Invoke(_remoteEndPoint.ToString(), $"Incoming File: {_fileName}{_fileExtension}");
// Waits for the num bytes and file data from the client
_fileSize = _soc.ReceiveFrom(_buff, 0, _buff.Length, SocketFlags.None, ref _remoteEndPoint);
// Notifies the UI of a new file
FileReceived?.Invoke(_remoteEndPoint.ToString(), _fileSize, _buff, _fileName, _fileExtension);
_soc.SendTo(Encoding.ASCII.GetBytes($"Successfully Recieved: {_fileName}{_fileExtension}"), SocketFlags.None, _remoteEndPoint);
// Skips the message recieved call
continue;
}
// Notifies the UI of a new message
MessageReceived.Invoke(_remoteEndPoint.ToString(), _msg);
// Creates the echo message string
var _echoMsg = "Echo: " + _msg;
// Sends the echo message string to the client
_soc.SendTo(Encoding.ASCII.GetBytes(_echoMsg), SocketFlags.None, _remoteEndPoint);
}
}
});
}
catch (Exception ex)
{
// For use debugging
Console.WriteLine(ex);
}
}
private void OnClientDataReceived(object sender, DataReceivedEventArgs e)
{
if (!MessageConstructor.ValidateMessage(e.Data))
{
if (StopAndWait)
{
byte[] msg = MessageConstructor.GetDataReceived(uint.MinValue, uint.MaxValue);
Client.Send(msg, msg.Length);
}
return;
}
if (MessageConstructor.IsHandshake(e.Data))
{
Connect(BitConverter.ToUInt32(e.Data, 1), BitConverter.ToUInt32(e.Data, 1 + sizeof(int)), e.EndPoint);
return;
}
if (IsTransfering && MessageConstructor.IsFileData(e.Data))
{
ReceivePacket(MessageConstructor.GetPacket(e.Data));
return;
}
if (MessageConstructor.IsFileMeta(e.Data))
{
TotalPacketCount = BitConverter.ToUInt32(e.Data, 1 + sizeof(long));
string fn = Encoding.ASCII.GetString(e.Data, 1 + sizeof(long) + sizeof(uint), e.Data.Length - 1 - sizeof(long) - sizeof(uint) - sizeof(uint));
PrepareFile(fn);
ReceivedPackets = new DataPacket[TotalPacketCount];
Console.WriteLine($"Receiving file '{fn}', total of {TotalPacketCount} packets.");
WriteStatus(0, TotalPacketCount, false);
Client.Send(e.Data, e.Data.Length);
//Client.ErrorRate = 0.001;
//Client.DropRate = 0.01;
}
if (IsTransfering && MessageConstructor.IsFileEnd(e.Data))
{
WriteFile();
uint hash = BitConverter.ToUInt32(e.Data, 1);
uint computed = MessageConstructor.GetFileHash(FileName);
if (hash == computed)
{
FileReceived?.Invoke(this, new FileReceivedEventArgs()
{
FileName = FileName
});
_is_transfering = false;
}
else
{
Console.WriteLine("Something is wrong, received different hash.");
_is_transfering = false;
}
}
}
