/// <summary>
/// loop on created thread which processes communicates with the REPL window
/// </summary>
private void ReplLoop()
{
try
{
byte[] inp = new byte[4];
int size = 0;
while (true)
{
if (this.CheckForExitReplLoop())
{
break;
}
/* we receive a series of 4 byte commands. Each command then has it's
* own format which we must parse before continuing to the next command. */
this.Flush();
this._stream.ReadTimeout = 10000; // 10 sec
try
{
size = this._stream.Read(inp, 0, 4);
}
catch (IOException ex)
{
SocketException se = null;
if (null != ex.InnerException && null != (se = ex.InnerException as SocketException) && SocketError.TimedOut == se.SocketErrorCode)
{
#if DEBUG
ReplProcessor.DebugWrite("Time out reading from server.");
#endif
continue;
}
throw;
}
this._stream.ReadTimeout = Timeout.Infinite;
if (size < 1)
{
break;
}
this.Flush();
Action cmd = null;
if (this._COMMANDS.TryGetValue(ReplProcessor.Cmd(inp), out cmd))
{
cmd();
}
}
}
catch (Exception ex)
{
ReplProcessor.DebugWrite("Error in ReplLoop");
ReplProcessor.DebugWrite(ex.ToString());
this.ExitProcess();
Thread.Sleep(2000); // try and exit gracefully, then interrupt main if necessary
Environment.Exit(1);
this.InterruptMain(); // will never happen
}
}
private void Send(params string[] data)
{
if (null == data || 0 == data.Length)
{
return;
}
using (new SendLock(this))
{
foreach (var d in data)
{
ReplProcessor.DebugWrite(d + '\n');
this._stream.Write(ReplProcessor.Cmd(d));
}
}
}
static ReplBackend()
{
_MRES = ReplProcessor.Cmd("MRES");
_SRES = ReplProcessor.Cmd("SRES");
_LOCS = ReplProcessor.Cmd("LOCS");
_IMGD = ReplProcessor.Cmd("IMGD");
_PRPC = ReplProcessor.Cmd("PRPC");
_RDLN = ReplProcessor.Cmd("RDLN");
_STDO = ReplProcessor.Cmd("STDO");
_STDE = ReplProcessor.Cmd("STDE");
_DBGA = ReplProcessor.Cmd("DBGA");
_DETC = ReplProcessor.Cmd("DETC");
_DPNG = ReplProcessor.Cmd("DPNG");
_UNICODE_PREFIX = ReplProcessor.Cmd("U");
_ASCII_PREFIX = ReplProcessor.Cmd("A");
}