Handle unexpected connection closure of the AIS Transmitter

[HowardvanRooijen]

The AIS Transmitter sometimes hangs and needs a reboot, when this happens the AIS Receiver crashes with the following exception.

Unhandled Exception: System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: No connection could be made because the target machine actively refused it 153.44.253.27:5631 at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult) at System.Net.Sockets.TcpClient.EndConnect(IAsyncResult asyncResult) at System.Net.Sockets.TcpClient.<>c.<ConnectAsync>b	28_l(IAsyncResult asyncResult)
at System.Threading.Tasks.TaskFactory'1.FromAsyncCoreLogic(IAsyncResult iar, Func'2 endFunction, Action'1 endAction, Task'1 promise. Boolean requiresSynchronization)
— End of stack trace from previous location where exception was thrown —
at Endjin.Ais.Receiver.NmeaReceiver.InitaliseAsync() in C:\Ais.Net.Receiver\NmeaReceiver.cs:line 48 at Endjin.Ais.Receiver.Program.Main(String[] args) in C:\Ais.Net.Receiver\Program.cs:line 33 at Endjin.Ais.Receiver.Program.<Main>(String[] args)