/// <summary>
/// A new service publisher.
/// </summary>
/// <remarks>
/// The new service publisher will automatically bind to the next available port
/// (as defined by XFS4IoT.)
/// </remarks>
/// <param name="Logger">To use for all logging</param>
/// <param name="CommandDispatcher">For dispatching incomming command messages</param>
public ServicePublisher(ILogger Logger)
: base(typeof(ServicePublisher), Logger)
{
Logger.IsNotNull($"Invalid parameter received in the {nameof(ServicePublisher)} constructor. {nameof(Logger)}");
foreach (int port in XFSConstants.PortRanges)
{
try
{
// From the spec, valid URI are like:
// wss://Terminal321.ATMNetwork.corporatenet:443/xfs4iot/v1.0
// wss://192.168.21.43:5848/xfs4iot/v1.0/CardReader1
// We're going to open a HTTP connection first, then upgrade to WSS, hence http://
// Service URI is configuration parameter
string serverAddressUri = ConfigurationManager.AppSettings.Get(Configurations.ServerAddressUri);
if (string.IsNullOrEmpty(serverAddressUri))
{
serverAddressUri = Configurations.Default.ServerAddressUri;
}
else
{
bool result = Regex.IsMatch(serverAddressUri, "^https?://[-_.!~*'()a-z0-9%]+$", RegexOptions.IgnoreCase);
result.IsTrue($"Invalid service URI is configured. URI must be with out port number. i.e. http(s)://Terminal321.ATMNetwork.corporatenet and no ");
}
Uri = new Uri($"{serverAddressUri}:{port}/xfs4iot/v1.0/");
string serverAddressWUri = Regex.Replace(serverAddressUri, "^http", "ws", RegexOptions.IgnoreCase);
WSUri = new Uri($"{serverAddressWUri}:{port}/xfs4iot/v1.0/");
EndpointDetails = new EndpointDetails(serverAddressUri, serverAddressWUri, port);
Logger.Log(Constants.Component, $"Attempting to bind to {Uri}");
EndPoint = new EndPoint(Uri,
CommandDecoder: CommandDecoder,
CommandDispatcher: this,
Logger);
_Services.Add(this);
return;
}
catch (System.Net.HttpListenerException)
{
continue;
}
}
// If we excape from the loop then we've run out of things to try and
// we've failed. Time to die.
Contracts.Fail($"Can't find an XFS4IoT port to listen on");
}
public TextTerminalServiceProvider(XFS4IoTServer.EndpointDetails EndpointDetails, ITextTerminalDevice Device, ILogger Logger)
: base(typeof(TextTerminalServiceProvider), Logger)
{
EndpointDetails.IsNotNull($"The endpoint details are invalid. {nameof(EndpointDetails)}");
Device.IsNotNull($"The device interface is an invalid. {nameof(Device)}");
this.Device = Device;
(Uri, WSUri) = EndpointDetails.ServiceUri(ServiceClass);
Logger.Log(Constants.Framework, $"Listening on {Uri}");
this.EndPoint = new EndPoint(Uri,
CommandDecoder,
this,
Logger);
}
