private async void HandleConnectionAsync(IOtpTransport socket)
{
Logger.Info($"[OtpEpmd] connected {socket}");
List <string> publishedNodes = new List <string>();
try
{
while (true)
{
var ibuf = await ReadRequestAsync(socket);
int request = ibuf.Read1();
// This request retains the connection
if (request == ALIVE2_REQ)
{
publishedNodes.Add(await Publish_R4(socket, ibuf));
continue;
}
// These requests terminate the connection
if (request == stopReq)
{
}
else if (request == port4req)
{
await Port_R4(socket, ibuf);
}
else if (request == names4req)
{
await Names_R4(socket);
}
else
{
Logger.Info($"[OtpEpmd] Unknown request (request={request}, length={ibuf.Length}) from {socket}");
}
break;
}
}
catch (Exception e)
{
Logger.Error($"[OtpEpmd] socket {socket} error {e}");
}
Logger.Info($"[OtpEpmd] closing {socket}");
OtpTransport.Close(socket);
foreach (var name in publishedNodes)
{
portmap.TryRemove(name, out _);
}
}
/**
* Unregister the server node's name and port number from the Erlang port
* mapper, thus preventing any new connections from remote nodes.
*/
public void UnPublishPort()
{
if (Epmd == null)
{
return;
}
// Unregister
OtpEpmd.UnPublishPort(this);
// Close and ignore errors
OtpTransport.Close(Epmd);
Epmd = null;
}
/**
* Close the connection to the remote node.
*/
public virtual void Close()
{
Stop();
Connected = false;
lock (objRead)
{
if (socket != null)
{
if (TraceLevel >= TraceCTRL)
{
Logger.Debug($"-> CLOSE {socket}");
}
OtpTransport.Close(socket);
socket = null;
}
}
}
public void Close() => OtpTransport.Close(socket);
public void Stop()
{
stopping = true;
OtpTransport.Close(listen);
}