public void CloneEventHandlers(IRestServer server)
{
if (BeforeStarting != null)
{
foreach (var action in BeforeStarting.GetInvocationList().Reverse().Cast <ServerEventHandler>())
{
server.BeforeStarting += action;
}
}
if (AfterStarting != null)
{
foreach (var action in AfterStarting.GetInvocationList().Reverse().Cast <ServerEventHandler>())
{
server.AfterStarting += action;
}
}
if (BeforeStopping != null)
{
foreach (var action in BeforeStopping.GetInvocationList().Reverse().Cast <ServerEventHandler>())
{
server.BeforeStopping += action;
}
}
if (AfterStopping != null)
{
foreach (var action in AfterStopping.GetInvocationList().Reverse().Cast <ServerEventHandler>())
{
server.AfterStopping += action;
}
}
}
protected void OnBeforeStarting()
{
OnBeforeStart?.Invoke();
if (BeforeStarting == null)
{
return;
}
var exceptions = InvokeServerEventHandlers(BeforeStarting.GetInvocationList().Reverse().Cast <ServerEventHandler>());
if (exceptions.Count > 0)
{
throw new AggregateException(exceptions);
}
}
public override void Start()
{
if (IsDisposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (IsListening || IsStarting || IsStopping)
{
return;
}
IsStarting = true;
var exceptionWasThrown = false;
try
{
// 1. Reset CancellationTokenSource
TokenSource?.Dispose();
TokenSource = new CancellationTokenSource();
// 2. Execute BeforeStarting event handlers
BeforeStarting?.Invoke(this);
// 3. Optionally autoscan for routes
if (Router.RoutingTable.Count == 0 && Options.EnableAutoScan)
{
Router.Register(RouteScanner.Scan());
}
// 4. Configure and start the listener
Listener.Start();
// 5. Start the request handler thread
RequestHandler.Start();
// 6. Execute AfterStarting event handlers
AfterStarting?.Invoke(this);
}
catch (HttpListenerException hl) when(hl.ErrorCode == 32)
{
/*
* When the port you are attempting to bind to is already in use
* by another application, the error can sometimes be unintuitive.
*/
exceptionWasThrown = true;
var message = $"One or more ports are already in use by another application.";
var exception = new ArgumentException(message, hl);
Logger.LogCritical(exception, message);
throw exception;
}
catch (Exception e)
{
exceptionWasThrown = true;
Logger.LogCritical(e, "An unexpected error occured when attempting to start the server");
throw;
}
finally
{
if (exceptionWasThrown)
{
Listener.Stop();
TokenSource.Cancel();
}
IsStarting = false;
}
}
