private void ReportAddition(NamedIPEndPoint client)
{
if (client != null && !clientsListView.Items.Contains(client))
{
clientsListView.Items.Add(client);
}
}
/*
* Discovers hosts that are in public mode (that can accept file transfers).
*/
public NamedIPEndPoint ClientDiscovery()
{
Debug.WriteLine("[SERVER] Searching hosts...");
if (udpClient.Available > 0)
{
IPEndPoint clientEp = new IPEndPoint(0, 0); // Initializing an "empty" IPEndPoint
var clientRequestData = udpClient.Receive(ref clientEp);
var clientRequest = Encoding.ASCII.GetString(clientRequestData);
if (clientRequest.Contains(tfString)) // If I received the broadcast packet containing the tfString
{
string[] announcement = clientRequest.Split('_');
clientEp.Port = Convert.ToInt32(announcement[2]); // Replacing the endpoint port with the one received into the UDP payload
NamedIPEndPoint namedClientEp = new NamedIPEndPoint(announcement[1], clientEp);
if (!availableClients.Contains(namedClientEp))
{
availableClients.Add(namedClientEp); // Client added to the list of available clients
return(namedClientEp);
}
}
}
return(null);
}
public SendingFileWindow(Server server, NamedIPEndPoint selectedClient, string filePath)
{
this.filePath = filePath;
this.server = server;
this.selectedClient = selectedClient;
InitializeComponent();
StartSending();
}
public FileTransferData StartSending(string filePath, NamedIPEndPoint selectedClient)
{
FileTransferData fileTransferData = new FileTransferData();
fileTransferData.HostName = selectedClient.Name;
TcpClient tcpClient = new TcpClient();
tcpClient.Connect(selectedClient.EndPoint); // Connecting to the client specified (throws an exception if not available)
if (Directory.Exists(filePath))
{
string tempPath = Path.GetTempPath() + new DirectoryInfo(filePath).Name + ".zip";
if (File.Exists(tempPath)) // Check if the file already exists so that ZipFile doesn't throw an exception
{
File.Delete(tempPath);
}
ZipFile.CreateFromDirectory(filePath, tempPath);
filePath = tempPath;
}
FileInfo fi = new FileInfo(filePath); // Obtaining the infos of the specified file
fileTransferData.Name = fi.Name;
fileTransferData.Length = fi.Length;
Debug.WriteLine("[SERVER] File length of the sent file: " + fileTransferData.Length);
Debug.WriteLine("[SERVER] File name of the sent file: " + fileTransferData.Name);
fileTransferData.NetworkStream = tcpClient.GetStream();
fileTransferData.NetworkStream.WriteTimeout = 20000;
byte[] hostNameLengthBuffer = BitConverter.GetBytes(Encoding.Unicode.GetByteCount(Environment.UserName));
fileTransferData.NetworkStream.Write(hostNameLengthBuffer, 0, hostNameLengthBuffer.Length);
byte[] hostNameBuffer = Encoding.Unicode.GetBytes(Environment.UserName);
fileTransferData.NetworkStream.Write(hostNameBuffer, 0, hostNameBuffer.Length);
byte[] fileNameLengthBuffer = BitConverter.GetBytes(Encoding.Unicode.GetByteCount(fileTransferData.Name));
fileTransferData.NetworkStream.Write(fileNameLengthBuffer, 0, fileNameLengthBuffer.Length);
byte[] fileNameBuffer = Encoding.Unicode.GetBytes(fileTransferData.Name);
fileTransferData.NetworkStream.Write(fileNameBuffer, 0, fileNameBuffer.Length);
byte[] fileLengthBuffer = BitConverter.GetBytes(fileTransferData.Length);
fileTransferData.NetworkStream.Write(fileLengthBuffer, 0, fileLengthBuffer.Length);
fileTransferData.FileStream = File.OpenRead(filePath);
Debug.WriteLine("[SERVER] Initial file data sent successfully");
return(fileTransferData);
}
