public SingleFileTransfer StartSending(string FilePath, MyEndpoint WantedEndpoint)
{
SingleFileTransfer sft = new SingleFileTransfer();
sft.HostName = WantedEndpoint.Name;
TcpClient tcpClient = new TcpClient();
tcpClient.Connect(WantedEndpoint.Endpoint); // Connecting to the client specified (throws an exception if not available)
// checking if it's a directory: if so, then compressing
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;
}
// New Stream opening
FileInfo fi = new FileInfo(FilePath); // Obtaining the infos of the specified file
sft.Name = fi.Name;
sft.FileLength = fi.Length;
sft.CurrentNetworkStream = tcpClient.GetStream();
sft.CurrentNetworkStream.WriteTimeout = 20000; // seems good enough 20 seconds
// Sending UserName, FileName and FileLength
byte[] hostNameLengthBuffer = BitConverter.GetBytes(Encoding.Unicode.GetByteCount(Environment.UserName));
sft.CurrentNetworkStream.Write(hostNameLengthBuffer, 0, hostNameLengthBuffer.Length);
// Sending
byte[] hostNameBuffer = Encoding.Unicode.GetBytes(Environment.UserName);
sft.CurrentNetworkStream.Write(hostNameBuffer, 0, hostNameBuffer.Length);
// Sending
byte[] fileNameLengthBuffer = BitConverter.GetBytes(Encoding.Unicode.GetByteCount(sft.Name));
sft.CurrentNetworkStream.Write(fileNameLengthBuffer, 0, fileNameLengthBuffer.Length);
// Sending
byte[] fileNameBuffer = Encoding.Unicode.GetBytes(sft.Name);
sft.CurrentNetworkStream.Write(fileNameBuffer, 0, fileNameBuffer.Length);
// Sending
byte[] fileLengthBuffer = BitConverter.GetBytes(sft.FileLength);
sft.CurrentNetworkStream.Write(fileLengthBuffer, 0, fileLengthBuffer.Length);
// Opening FileStream
sft.CurrentFileStream = File.OpenRead(FilePath);
return(sft);
}
// networking methods
// UDP discovery format is "MSFT@<port>@<name>"
// MSFT has been added in order not to capture other traffic not related
public MyEndpoint ClientDiscovery()
{
if (this.Client.Available > 0)
{
IPEndPoint NewClient = new IPEndPoint(0, 0);
var result = Encoding.ASCII.GetString(this.Client.Receive(ref NewClient));
if (result.Contains(MyServer.Name))
{
string[] announcement = result.Split('@');
NewClient.Port = Convert.ToInt32(announcement[1]);
MyEndpoint NamedNewClient = new MyEndpoint(announcement[2], NewClient);
if (this.AvailablePeople.Contains(NamedNewClient))
{
this.AvailablePeople.Add(NamedNewClient);
return(NamedNewClient);
}
}
}
return(null);
}
