tracked_launch GetTracker(long timestamp)
{
foreach (tracked_launch tracker in trackers)
{
if (tracker.timestamp == timestamp)
{
return(null);
}
}
tracked_launch new_tracker = new tracked_launch();
new_tracker.timestamp = timestamp;
trackers.Add(new_tracker);
return(new_tracker);
}
void read_complete(IAsyncResult result)
//stateObject st;
{
try
{
tracked_launch tracker = null;
//StateObject state = (StateObject)result.AsyncState;
IPEndPoint from = null;
byte[] buffer = state.workSocket.EndReceive(result, ref from);
TaskItem task = null;
// decode the packet.
long timestamp = 0;
if (from.Port == 3007 || from.Port == 3008)
{
for (int n = 0; n < buffer.Length; n++)
{
switch (buffer[n])
{
case (byte)'^':
{
int end;
for (end = n + 1; buffer[end] != '#'; end++)
{
timestamp = (timestamp * 10) + (buffer[end] - '0');
}
if ((tracker = GetTracker(timestamp)) == null)
{
n = buffer.Length;
break;
}
task = new TaskItem();
tracker.task = task;
n = end - 1; // post increment will put N on the '#'
}
break;
case (byte)'#':
{
int end;
for (end = n + 1; buffer[end] != 0; end++)
{
// Encoding.ASCII.GetString( bytesRead, 0, bytesRead.Length )
}
task.ProgramName = Encoding.ASCII.GetString(buffer, n + 1, end - n - 1);
n = end;
while (buffer.Length > n)
{
n = end;
for (end = n + 1; end < buffer.Length && (buffer[end] != 0); end++)
{
// Encoding.ASCII.GetString( bytesRead, 0, bytesRead.Length )
}
// there is a double null at the end, resulting in the last argument's length being 0.
if (end - n - 1 > 0)
{
task.Argument = Encoding.ASCII.GetString(buffer, n + 1, end - n - 1);
}
n = end;
}
n--;
}
break;
}
}
if (task != null)
{
Process process;
if (task.Execute(out process))
{
if (from.Port == 3008) // if the service disappears, we stop being able to listen.. get a forcable close reset on a half open socket!
{
MemoryStream ms = new MemoryStream();
BinaryWriter bw = new BinaryWriter(ms);
BinaryReader br = new BinaryReader(ms);
bw.Write('$');
bw.Write(tracker.timestamp.ToString().ToCharArray());
bw.Write('^');
bw.Write(process.Id.ToString().ToCharArray());
bw.Write('#');
bw.Write(SystemInformation.ComputerName.ToCharArray());
ms.Position = 0;
workSocket.Send(br.ReadBytes((int)ms.Length)
, (int)ms.Length
, from);
}
}
}
}
// start another receive
state.workSocket.BeginReceive(read_complete, state);
}
catch (SocketException e)
{
if (e.ErrorCode == 10053)
{
Application.Exit();
}
//workSocket.Client.
// workSocket.Connect();
//Debug.WriteLine( e.ToString() );
}
}
