internal virtual async Task BindAsync(AddressBindContext context)
{
await AddressBinder.BindEndpointAsync(this, context).ConfigureAwait(false);
context.Addresses.Add(GetDisplayName());
}
public async Task StartAsync <TContext>(IHttpApplication <TContext> application, CancellationToken cancellationToken)
{
try
{
if (!BitConverter.IsLittleEndian)
{
throw new PlatformNotSupportedException(CoreStrings.BigEndianNotSupported);
}
ValidateOptions();
if (_hasStarted)
{
// The server has already started and/or has not been cleaned up yet
throw new InvalidOperationException(CoreStrings.ServerAlreadyStarted);
}
_hasStarted = true;
ServiceContext.Heartbeat?.Start();
async Task OnBind(ListenOptions options)
{
// INVESTIGATE: For some reason, MsQuic needs to bind before
// sockets for it to successfully listen. It also seems racy.
if ((options.Protocols & HttpProtocols.Http3) == HttpProtocols.Http3)
{
if (_multiplexedTransportFactory is null)
{
throw new InvalidOperationException($"Cannot start HTTP/3 server if no {nameof(IMultiplexedConnectionListenerFactory)} is registered.");
}
options.UseHttp3Server(ServiceContext, application, options.Protocols);
var multiplexedConnectionDelegate = ((IMultiplexedConnectionBuilder)options).Build();
// Add the connection limit middleware
multiplexedConnectionDelegate = EnforceConnectionLimit(multiplexedConnectionDelegate, Options.Limits.MaxConcurrentConnections, Trace);
options.EndPoint = await _transportManager.BindAsync(options.EndPoint, multiplexedConnectionDelegate, options.EndpointConfig).ConfigureAwait(false);
}
// Add the HTTP middleware as the terminal connection middleware
if ((options.Protocols & HttpProtocols.Http1) == HttpProtocols.Http1 ||
(options.Protocols & HttpProtocols.Http2) == HttpProtocols.Http2 ||
options.Protocols == HttpProtocols.None) // TODO a test fails because it doesn't throw an exception in the right place
// when there is no HttpProtocols in KestrelServer, can we remove/change the test?
{
if (_transportFactory is null)
{
throw new InvalidOperationException($"Cannot start HTTP/1.x or HTTP/2 server if no {nameof(IConnectionListenerFactory)} is registered.");
}
options.UseHttpServer(ServiceContext, application, options.Protocols);
var connectionDelegate = options.Build();
// Add the connection limit middleware
connectionDelegate = EnforceConnectionLimit(connectionDelegate, Options.Limits.MaxConcurrentConnections, Trace);
options.EndPoint = await _transportManager.BindAsync(options.EndPoint, connectionDelegate, options.EndpointConfig).ConfigureAwait(false);
}
}
AddressBindContext = new AddressBindContext
{
ServerAddressesFeature = _serverAddresses,
ServerOptions = Options,
Logger = Trace,
CreateBinding = OnBind,
};
await BindAsync(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
Trace.LogCritical(0, ex, "Unable to start Kestrel.");
Dispose();
throw;
}
}
