private void sendDatagram(Datagram data, IPAddress dest)
{
client.Send(data.Data, data.Data.Length, new IPEndPoint(dest, 21621));
Invoke(MessageHandler, data, new IPEndPoint(localaddress, 21621));
}
private void handleMessage(Datagram data, IPEndPoint source)
{
int pos = 1;
try
{
switch (data.Data[0])
{
case 0:
string sender = data.ReadString(ref pos);
string message = data.ReadString(ref pos);
userip(sender, source.Address.ToString());
textBox2.AppendText("\r\n" + listView1.Items[ipdict[source.Address.ToString()]].SubItems[2].Text + ":\"" + sender + "\": " + message);
if (WindowState == FormWindowState.Minimized)
{
notifyIcon1.ShowBalloonTip(100, sender, message, ToolTipIcon.None);
}
break;
case 1:
userip(data.ReadString(ref pos), source.Address.ToString());
break;
case 2:
string name = data.ReadString(ref pos);
long size = data.Readlong(ref pos);
string sharerid = ipdict[source.Address.ToString()].ToString();
if (sharedfiles.ContainsKey(sharerid + ":" + name))
{
sharedfiles[sharerid + ":" + name] = size;
}
else
{
ListViewItem item = new ListViewItem(new string[] { name, sharerid, getFileSize(size), source.Address.ToString() });
listView2.Items.Insert(sharedfiles.Count, item);
sharedfiles.Add(sharerid + ":" + name, size);
}
break;
case 3:
string filename = data.ReadString(ref pos);
int filepart = data.ReadInt(ref pos);
data.ID = 4;
data.AppendBytes(pubfiledata[filename][filepart]);
Invoke(MessageUnicastSender, data, source.Address);
break;
case 4:
if (rcvfile == data.ReadString(ref pos))
{
if (rcvnextpart == data.ReadInt(ref pos))
{
Rerequester.Change(int.MaxValue, int.MaxValue);
if (rcvnextpart < rcvpart)
{
Array.Copy(data.ReadBytes(ref pos, 32 * 1024), 0, rcvdata, rcvnextpart * 32 * 1024, 32 * 1024);
rcvnextpart++;
DownloadProgress();
Rerequester.Change(100, int.MaxValue);
requestnextpart();
}
else
{
Array.Copy(data.ReadBytes(ref pos, rcvdata.Length % (32 * 1024)), 0, rcvdata, rcvnextpart * 32 * 1024, rcvdata.Length % (32 * 1024));
FileStream outfile = File.OpenWrite(saveFileDialog1.FileName);
button2.Text = "Schreibe Daten";
outfile.Write(rcvdata, 0, rcvdata.Length);
outfile.Close();
MessageBox.Show("Dateidownload Fertig!\r\n" + rcvfile, "Download Abgeschlossen", MessageBoxButtons.OK, MessageBoxIcon.Information);
button2.Text = "Download";
button2.Enabled = true;
}
}
}
break;
}
}
catch { }
}
private void sendDatagram(Datagram data)
{
sendDatagram(data, IPAddress.Broadcast);
}