private async Task StartImpl(HL7Connection Connection, List <BourneListens> listeners, ObservableCollection <BourneListens> deadListeners, List <TcpClient> clients, Func <TcpClient, int, Task> Read)
{
RemoveDeadListeners(listeners, deadListeners);
//frequent DNS lookup required for Cloud and HA environments where a lower TTL results in faster failover.
//For a listener this means a container might have been moved to another server with different IP.
var hostEntry = Dns.GetHostEntry(Connection.localHostname);
foreach (var ip in hostEntry.AddressList)
{
_logger.Log(LogLevel.Information, $"{Connection.name} hostEntry: {Connection.localHostname} ip: {ip}");
BourneListens bourne = null;
if (ip.AddressFamily == AddressFamily.InterNetworkV6 && Connection.UseIPV6)
{
if (!listeners.Exists(x => x.localaddr.Equals(ip) && x.port.Equals(Connection.localPort)))
{
bourne = new BourneListens(ip, Connection.localPort);
listeners.Add(bourne);
//you can verify Start worked on mac by doing lsof -n -i:2575 | grep LISTEN, where 2575 is HL7 or whatever port you want.
bourne.Start();
_logger.Log(LogLevel.Information, $"{Connection.name} is listening on {bourne.LocalEndpoint}");
_logger.Log(LogLevel.Information, $"{Connection.name} Verify with Mac/Linux:lsof -n -i:{Connection.localPort} | grep LISTEN and with echo \"Hello world\" | nc {Connection.localHostname} {Connection.localPort}");
_logger.Log(LogLevel.Information, $"{Connection.name} Verify with Windows:netstat -abno (requires elevated privileges)");
}
}
if ((ip.AddressFamily == AddressFamily.InterNetwork && Connection.UseIPV4 && !RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) ||
(ip.AddressFamily == AddressFamily.InterNetwork && Connection.UseIPV4 && !Connection.UseIPV6 && RuntimeInformation.IsOSPlatform(OSPlatform.Windows)))
{
if (!listeners.Exists(x => x.localaddr.Equals(ip) && x.port.Equals(Connection.localPort)))
{
bourne = new BourneListens(ip, Connection.localPort);
listeners.Add(bourne);
//you can verify Start worked on mac by doing lsof -n -i:2575 | grep LISTEN, where 2575 is HL7 or whatever port you want.
bourne.Start();
_logger.Log(LogLevel.Information, $"{Connection.name} is listening on {bourne.LocalEndpoint}");
_logger.Log(LogLevel.Information, $"{Connection.name} Verify with Mac/Linux:lsof -n -i:{Connection.localPort} | grep LISTEN and with echo \"Hello world\" | nc {Connection.localHostname} {Connection.localPort}");
_logger.Log(LogLevel.Information, $"{Connection.name} Verify with Windows:netstat -abno (requires elevated privileges)");
}
}
}
foreach (var listener in listeners)
{
if (listener != null && listener.LocalEndpoint != null)
{
if (_taskManager.CanStart($"{Connection.name}.accept: {listener.LocalEndpoint}"))
{
var newTaskID = _taskManager.NewTaskID();
Task task = new Task(new Action(async() => await _hl7AcceptService.Accept(Connection, listener, clients, Read, newTaskID)), _taskManager.cts.Token);
await _taskManager.Start(newTaskID, task, $"{Connection.name}.accept: {listener.LocalEndpoint}", $"{Connection.name}.accept: {listener.LocalEndpoint}", isLongRunning : true);
await Task.Delay(1000);
}
}
else
{
_logger.Log(LogLevel.Information, $"listener is disposed but still in list. Ignoring");
}
}
}
public async Task Accept(BourneListens bourne, int taskID)
{
await _hl7AcceptService.Accept(Connection, bourne, clients, Read, taskID);
}