private static Thread RunThread(ClientConfiguration.SshOptions config)
{
var t = new Thread(() => { RunEx(config); })
{
IsBackground = true,
Name = "ssh"
};
return(t);
}
/// <summary>
/// Creates new thread running Ssh client connection
/// </summary>
internal static void Run(ClientConfiguration.SshOptions config)
{
while (true)
{
// ssh not running? (re)start it...
if (config.IsEnabled && (sshManagerThread == null || !sshManagerThread.IsAlive))
{
sshManagerThread = RunThread(config); // get new thread
sshManagerThread.Start(); // now run it
_log.Debug($"Started new SshService thread. Thread alive? {sshManagerThread.IsAlive} ");
}
Thread.Sleep((config.CheckProcessIntervalInSeconds * 1000));
}
}
private static void RunEx(ClientConfiguration.SshOptions config)
{
BondManager.CurrentPorts.Clear();
try
{
_log.Info(
$"Starting SSH client with {config.KeepAliveIntervalInSeconds}s keep-alive to {config.Host}:{config.Port} as {config.Username}...");
using (var client = new SshClient(config.Host, config.Port, config.Username, config.Password))
{
try
{
client.Connect();
client.KeepAliveInterval = TimeSpan.FromSeconds(config.KeepAliveIntervalInSeconds);
client.ErrorOccurred += delegate(object sender, ExceptionEventArgs e) { _log.Trace(e); };
client.HostKeyReceived += delegate(object sender, HostKeyEventArgs e)
{
_log.Trace($"Host key received: {e.HostKey}:{e.HostKeyName}");
};
foreach (var forwardedPort in config.SshPorts)
{
//define port and add it to client
var port = new ForwardedPortRemote(forwardedPort.Server, forwardedPort.ServerPort, forwardedPort.Guest,
forwardedPort.GuestPort);
client.AddForwardedPort(port);
//add delegates to handle port exceptions and requests received
port.Exception += delegate(object sender, ExceptionEventArgs e) { _log.Info(e.Exception.ToString()); };
port.RequestReceived += delegate(object sender, PortForwardEventArgs e)
{
_log.Info($"{e.OriginatorHost}:{e.OriginatorPort}—{sender}");
};
//start the port, which will give us connection information back from server
port.Start();
//get that bound port from server
_log.Info($"Bound port: {port.BoundPort} - Is started?: {port.IsStarted}");
forwardedPort.ServerPort = port.BoundPort;
if (!BondManager.CurrentPorts.Contains(forwardedPort))
{
BondManager.CurrentPorts.Add(forwardedPort);
}
}
var result = client.RunCommand("uptime");
_log.Info(result.Result);
while (client.IsConnected)
{
// ... hold the port open ... //
Thread.Sleep(1000);
}
}
catch (SocketException se)
{
_log.Error(se);
}
catch (Exception e)
{
_log.Error(e);
}
finally
{
try
{
foreach (var port in client.ForwardedPorts)
{
port.Stop();
client.RemoveForwardedPort(port);
_log.Info($"Bound port stopped and removed: {port}");
}
}
catch (Exception e)
{
_log.Error(e);
}
client.Disconnect();
_log.Info($"Client disconnected...");
}
}
}
catch (SocketException se)
{
_log.Error(se);
}
catch (Exception e)
{
_log.Error(e);
}
}
