public IDisposable CreateServer(ServerAddress address)
{
var listeners = new List <IAsyncDisposable>();
var usingPipes = address.IsUnixPipe;
try
{
var pipeName = (Libuv.IsWindows ? @"\\.\pipe\kestrel_" : "/tmp/kestrel_") + Guid.NewGuid().ToString("n");
var single = Threads.Count == 1;
var first = true;
foreach (var thread in Threads)
{
if (single)
{
var listener = usingPipes ?
(Listener) new PipeListener(this) :
new TcpListener(this);
listeners.Add(listener);
listener.StartAsync(address, thread).Wait();
}
else if (first)
{
var listener = usingPipes
? (ListenerPrimary) new PipeListenerPrimary(this)
: new TcpListenerPrimary(this);
listeners.Add(listener);
listener.StartAsync(pipeName, address, thread).Wait();
}
else
{
var listener = usingPipes
? (ListenerSecondary) new PipeListenerSecondary(this)
: new TcpListenerSecondary(this);
listeners.Add(listener);
listener.StartAsync(pipeName, address, thread).Wait();
}
first = false;
}
return(new Disposable(() =>
{
DisposeListeners(listeners);
}));
}
catch
{
DisposeListeners(listeners);
throw;
}
}
public void Start <TContext>(IHttpApplication <TContext> application)
{
if (_disposables != null)
{
// The server has already started and/or has not been cleaned up yet
throw new InvalidOperationException("Server has already started.");
}
_disposables = new Stack <IDisposable>();
try
{
var dateHeaderValueManager = new DateHeaderValueManager();
var trace = new KestrelTrace(_logger);
var engine = new KestrelEngine(new ServiceContext
{
FrameFactory = context =>
{
return(new Frame <TContext>(application, context));
},
AppLifetime = _applicationLifetime,
Log = trace,
ThreadPool = new LoggingThreadPool(trace),
DateHeaderValueManager = dateHeaderValueManager,
ServerOptions = Options
});
_disposables.Push(engine);
_disposables.Push(dateHeaderValueManager);
var threadCount = Options.ThreadCount;
if (threadCount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(threadCount),
threadCount,
"ThreadCount must be positive.");
}
if (!Constants.ECONNRESET.HasValue)
{
_logger.LogWarning("Unable to determine ECONNRESET value on this platform.");
}
if (!Constants.EADDRINUSE.HasValue)
{
_logger.LogWarning("Unable to determine EADDRINUSE value on this platform.");
}
engine.Start(threadCount);
var atLeastOneListener = false;
foreach (var address in _serverAddresses.Addresses.ToArray())
{
var parsedAddress = ServerAddress.FromUrl(address);
atLeastOneListener = true;
if (!parsedAddress.Host.Equals("localhost", StringComparison.OrdinalIgnoreCase))
{
_disposables.Push(engine.CreateServer(
parsedAddress));
}
else
{
if (parsedAddress.Port == 0)
{
throw new InvalidOperationException("Dynamic port binding is not supported when binding to localhost. You must either bind to 127.0.0.1:0 or [::1]:0, or both.");
}
var ipv4Address = parsedAddress.WithHost("127.0.0.1");
var exceptions = new List <UvException>();
try
{
_disposables.Push(engine.CreateServer(ipv4Address));
}
catch (AggregateException ex)
{
var uvException = ex.InnerException as UvException;
if (uvException != null && uvException.StatusCode != Constants.EADDRINUSE)
{
_logger.LogWarning(0, ex, $"Unable to bind to {parsedAddress.ToString()} on the IPv4 loopback interface.");
exceptions.Add(uvException);
}
else
{
throw;
}
}
var ipv6Address = parsedAddress.WithHost("[::1]");
try
{
_disposables.Push(engine.CreateServer(ipv6Address));
}
catch (AggregateException ex)
{
var uvException = ex.InnerException as UvException;
if (uvException != null && uvException.StatusCode != Constants.EADDRINUSE)
{
_logger.LogWarning(0, ex, $"Unable to bind to {parsedAddress.ToString()} on the IPv6 loopback interface.");
exceptions.Add(uvException);
}
else
{
throw;
}
}
if (exceptions.Count == 2)
{
var ex = new AggregateException(exceptions);
_logger.LogError(0, ex, $"Unable to bind to {parsedAddress.ToString()} on any loopback interface.");
throw ex;
}
}
// If requested port was "0", replace with assigned dynamic port.
_serverAddresses.Addresses.Remove(address);
_serverAddresses.Addresses.Add(parsedAddress.ToString());
}
if (!atLeastOneListener)
{
throw new InvalidOperationException("No recognized listening addresses were configured.");
}
}
catch
{
Dispose();
throw;
}
}
public void Start <TContext>(IHttpApplication <TContext> application)
{
if (_disposables != null)
{
// The server has already started and/or has not been cleaned up yet
throw new InvalidOperationException("Server has already started.");
}
_disposables = new Stack <IDisposable>();
try
{
var componentFactory = Features.Get <IHttpComponentFactory>();
var dateHeaderValueManager = new DateHeaderValueManager();
var trace = new KestrelTrace(_logger);
var engine = new KestrelEngine(new ServiceContext
{
FrameFactory = context =>
{
return(new Frame <TContext>(application, context));
},
AppLifetime = _applicationLifetime,
Log = trace,
ThreadPool = new LoggingThreadPool(trace),
DateHeaderValueManager = dateHeaderValueManager,
ServerOptions = Options,
HttpComponentFactory = componentFactory
});
_disposables.Push(engine);
_disposables.Push(dateHeaderValueManager);
var threadCount = Options.ThreadCount;
if (threadCount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(threadCount),
threadCount,
"ThreadCount must be positive.");
}
engine.Start(threadCount);
var atLeastOneListener = false;
foreach (var address in _serverAddresses.Addresses)
{
var parsedAddress = ServerAddress.FromUrl(address);
if (parsedAddress == null)
{
throw new FormatException("Unrecognized listening address: " + address);
}
else
{
atLeastOneListener = true;
_disposables.Push(engine.CreateServer(
parsedAddress));
}
}
if (!atLeastOneListener)
{
throw new InvalidOperationException("No recognized listening addresses were configured.");
}
}
catch
{
Dispose();
throw;
}
}
public static ServerAddress FromUrl(string url)
{
url = url ?? string.Empty;
int schemeDelimiterStart = url.IndexOf("://", StringComparison.Ordinal);
if (schemeDelimiterStart < 0)
{
int port;
if (int.TryParse(url, NumberStyles.None, CultureInfo.InvariantCulture, out port))
{
return(new ServerAddress()
{
Scheme = "http",
Host = "+",
Port = port,
PathBase = "/"
});
}
return(null);
}
int schemeDelimiterEnd = schemeDelimiterStart + "://".Length;
var isUnixPipe = url.IndexOf(Constants.UnixPipeHostPrefix, schemeDelimiterEnd, StringComparison.Ordinal) == schemeDelimiterEnd;
int pathDelimiterStart;
int pathDelimiterEnd;
if (!isUnixPipe)
{
pathDelimiterStart = url.IndexOf("/", schemeDelimiterEnd, StringComparison.Ordinal);
pathDelimiterEnd = pathDelimiterStart;
}
else
{
pathDelimiterStart = url.IndexOf(":", schemeDelimiterEnd + Constants.UnixPipeHostPrefix.Length, StringComparison.Ordinal);
pathDelimiterEnd = pathDelimiterStart + ":".Length;
}
if (pathDelimiterStart < 0)
{
pathDelimiterStart = pathDelimiterEnd = url.Length;
}
var serverAddress = new ServerAddress();
serverAddress.Scheme = url.Substring(0, schemeDelimiterStart);
var hasSpecifiedPort = false;
if (!isUnixPipe)
{
int portDelimiterStart = url.LastIndexOf(":", pathDelimiterStart - 1, pathDelimiterStart - schemeDelimiterEnd, StringComparison.Ordinal);
if (portDelimiterStart >= 0)
{
int portDelimiterEnd = portDelimiterStart + ":".Length;
string portString = url.Substring(portDelimiterEnd, pathDelimiterStart - portDelimiterEnd);
int portNumber;
if (int.TryParse(portString, NumberStyles.Integer, CultureInfo.InvariantCulture, out portNumber))
{
hasSpecifiedPort = true;
serverAddress.Host = url.Substring(schemeDelimiterEnd, portDelimiterStart - schemeDelimiterEnd);
serverAddress.Port = portNumber;
}
}
if (!hasSpecifiedPort)
{
if (string.Equals(serverAddress.Scheme, "http", StringComparison.OrdinalIgnoreCase))
{
serverAddress.Port = 80;
}
else if (string.Equals(serverAddress.Scheme, "https", StringComparison.OrdinalIgnoreCase))
{
serverAddress.Port = 443;
}
}
}
if (!hasSpecifiedPort)
{
serverAddress.Host = url.Substring(schemeDelimiterEnd, pathDelimiterStart - schemeDelimiterEnd);
}
// Path should not end with a / since it will be used as PathBase later
if (url[url.Length - 1] == '/')
{
serverAddress.PathBase = url.Substring(pathDelimiterEnd, url.Length - pathDelimiterEnd - 1);
}
else
{
serverAddress.PathBase = url.Substring(pathDelimiterEnd);
}
serverAddress.PathBase = PathNormalizer.NormalizeToNFC(serverAddress.PathBase);
return(serverAddress);
}