private void Wrapper_Exited(object sender, EventArgs e)
{
// TODO: Is exit code enough to distinguish between stopping and crashing?
if (_wrapper.ExitCode == 0)
{
FNLog.Debug("Wrapper exited.");
OnStopped(sender, e);
}
else
{
FNLog.Error("Wrapper crashed. Exit code: {0}", _wrapper.ExitCode);
OnCrashed(CrashType.WrapperCrashed);
}
}
// TODO: Where to document? Throws FileNotFound, DirectoryNotFound, MissingJRE
public NodeController()
{
if (Properties.Settings.Default.CustomLocation.Length != 0)
{
_config = new NodeConfig(Properties.Settings.Default.CustomLocation);
}
else
{
Exception configException = null;
foreach (var path in new[]
{
Directory.GetCurrentDirectory(),
Environment.ExpandEnvironmentVariables(@"%LocalAppData%\Freenet"),
})
{
// TODO: If the wrapper has problems with arguments with non-ASCII characters should
// this the wrapper invocation change the working directory? Won't work in the general
// case because the pidfile location could contain non-ASCII characters, but it
// works for the default configuration.
// http://sourceforge.net/p/wrapper/bugs/290/
try
{
_config = new NodeConfig(path);
configException = null;
break;
}
catch (Exception e)
{
configException = e;
}
}
if (configException != null)
{
FNLog.Error("Failed to detect Freenet installation.", configException);
throw configException;
}
}
// Search for an existing wrapper process.
try
{
using (var reader = new StreamReader(_config.PidFilename))
{
var line = reader.ReadLine();
if (line != null)
{
var pid = int.Parse(line);
_wrapper = Process.GetProcessById(pid);
_wrapper.EnableRaisingEvents = true;
_wrapper.Exited += Wrapper_Exited;
}
}
}
catch (ArgumentException)
{
FNLog.Debug("No process has the PID in the PID file.");
// The wrapper can refuse to start if there is a stale PID file - "strict".
try
{
File.Delete(_config.PidFilename);
}
catch (IOException)
{
// TODO: Be louder about this? Or will the wrapper fail to start and exit nonzero?
FNLog.Debug("Stale PID file is still held.");
}
}
catch (FormatException)
{
FNLog.Debug("PID file does not contain an integer.");
}
catch (OverflowException)
{
FNLog.Debug("PID file does not contain an integer.");
}
catch (FileNotFoundException)
{
FNLog.Debug("PID file not found.");
}
/*
* Hide the wrapper window when launching it. This prevents (or at least heavily complicates)
* stopping it with Process.CloseMainWindow() or by sending ctrl + C.
*/
_wrapperInfo.FileName = Path.Combine(_config.RelativeTo, WrapperFilename());
// TODO: Is it worthwhile to omit the pidfile here when it's in the config file?
_wrapperInfo.Arguments = "-c " + WrapperConfFilename + " wrapper.pidfile=" + _config.PidFilename;
_wrapperInfo.UseShellExecute = false;
_wrapperInfo.CreateNoWindow = true;
}
private void openFreenetMenuItem_Click(object sender = null, EventArgs e = null)
{
Start();
var pollFproxy = new Thread(() =>
{
var fproxyListening = false;
var showSlowOpen = Settings.Default.ShowSlowOpenTip;
var openArgs = e as OpenArgs;
if (openArgs != null)
{
showSlowOpen = openArgs.ShowSlow;
}
/*
* TODO: Programatic way to get loopback address? This would not support IPv6.
* Use FProxy bind interface?
*/
var loopback = new IPAddress(new byte[] { 127, 0, 0, 1 });
var timer = new Stopwatch();
using (var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
timer.Start();
while (_node.IsRunning())
{
try
{
sock.Connect(loopback, _node.FProxyPort);
fproxyListening = true;
break;
}
catch (SocketException ex)
{
FNLog.Debug("Connecting got error: {0}",
Enum.GetName(typeof(SocketError), ex.SocketErrorCode));
Thread.Sleep(SocketPollInterval);
}
// Show a startup notification if it's taking a while.
if (showSlowOpen && timer.ElapsedMilliseconds > SlowOpenThreshold)
{
BeginInvoke(new Action(() =>
{
trayIcon.BalloonTipText = strings.FreenetStarting;
trayIcon.ShowBalloonTip(SlowOpenTimeout);
}));
showSlowOpen = false;
}
}
timer.Stop();
}
if (fproxyListening)
{
FNLog.Debug("FProxy listening after {0}", timer.Elapsed);
BrowserUtil.Open(new Uri(String.Format("http://localhost:{0:d}", _node.FProxyPort)), true);
}
});
pollFproxy.Start();
}