private static async void ProcessAccept(SocketAsyncEventArgs args)
{
HttpEndPointListener epl = (HttpEndPointListener)args.UserToken;
if (epl._closed)
{
return;
}
// http://msdn.microsoft.com/en-us/library/system.net.sockets.acceptSocket.acceptasync%28v=vs.110%29.aspx
// Under certain conditions ConnectionReset can occur
// Need to attept to re-accept
var socketError = args.SocketError;
var accepted = args.AcceptSocket;
epl.Accept(args);
if (socketError == SocketError.ConnectionReset)
{
epl._logger.LogError("SocketError.ConnectionReset reported. Attempting to re-accept.");
return;
}
if (accepted == null)
{
return;
}
if (epl._secure && epl._cert == null)
{
TryClose(accepted);
return;
}
try
{
var remoteEndPointString = accepted.RemoteEndPoint == null ? string.Empty : accepted.RemoteEndPoint.ToString();
var localEndPointString = accepted.LocalEndPoint == null ? string.Empty : accepted.LocalEndPoint.ToString();
//_logger.LogInformation("HttpEndPointListener Accepting connection from {0} to {1} secure connection requested: {2}", remoteEndPointString, localEndPointString, _secure);
HttpConnection conn = new HttpConnection(epl._logger, accepted, epl, epl._secure, epl._cert, epl._cryptoProvider, epl._streamHelper, epl._textEncoding, epl._fileSystem, epl._environment);
await conn.Init().ConfigureAwait(false);
//_logger.LogDebug("Adding unregistered connection to {0}. Id: {1}", accepted.RemoteEndPoint, connectionId);
lock (epl._unregisteredConnections)
{
epl._unregisteredConnections[conn] = conn;
}
conn.BeginReadRequest();
}
catch (Exception ex)
{
epl._logger.LogError(ex, "Error in ProcessAccept");
TryClose(accepted);
epl.Accept();
return;
}
}
private static void Accept(Socket socket, SocketAsyncEventArgs acceptEventArg, ref Socket accepted)
{
// acceptSocket must be cleared since the context object is being reused
acceptEventArg.AcceptSocket = null;
try
{
bool willRaiseEvent = socket.AcceptAsync(acceptEventArg);
if (!willRaiseEvent)
{
ProcessAccept(acceptEventArg);
}
}
catch (ObjectDisposedException)
{
if (accepted != null)
{
TryCloseAndDispose(accepted);
}
}
catch (Exception ex)
{
HttpEndPointListener epl = (HttpEndPointListener)acceptEventArg.UserToken;
epl._logger.ErrorException("Error in socket.AcceptAsync", ex);
if (accepted != null)
{
TryClose(accepted);
accepted = null;
}
}
}
private void Accept(SocketAsyncEventArgs acceptEventArg)
{
// acceptSocket must be cleared since the context object is being reused
acceptEventArg.AcceptSocket = null;
try
{
bool willRaiseEvent = _socket.AcceptAsync(acceptEventArg);
if (!willRaiseEvent)
{
ProcessAccept(acceptEventArg);
}
}
catch (ObjectDisposedException)
{
// TODO Investigate or properly fix.
}
catch (Exception ex)
{
HttpEndPointListener epl = (HttpEndPointListener)acceptEventArg.UserToken;
epl._logger.LogError(ex, "Error in socket.AcceptAsync");
}
}
private static void Accept(Socket socket, HttpEndPointListener epl)
{
var acceptEventArg = new SocketAsyncEventArgs();
acceptEventArg.UserToken = epl;
acceptEventArg.Completed += new EventHandler <SocketAsyncEventArgs>(OnAccept);
Socket dummy = null;
Accept(socket, acceptEventArg, ref dummy);
}
public static void RemoveEndPoint(HttpEndPointListener epl, IPEndPoint ep)
{
lock ((s_ipEndPoints as ICollection).SyncRoot)
{
Dictionary <int, HttpEndPointListener> p = null;
p = s_ipEndPoints[ep.Address];
p.Remove(ep.Port);
if (p.Count == 0)
{
s_ipEndPoints.Remove(ep.Address);
}
epl.Close();
}
}
private static void RemovePrefixInternal(ILogger logger, string prefix, HttpListener listener)
{
ListenerPrefix lp = new ListenerPrefix(prefix);
if (lp.Path.IndexOf('%') != -1)
{
return;
}
if (lp.Path.IndexOf("//", StringComparison.Ordinal) != -1)
{
return;
}
HttpEndPointListener epl = GetEPListener(logger, lp.Host, lp.Port, listener, lp.Secure);
epl.RemovePrefix(lp, listener);
}
public HttpConnection(ILogger logger, Socket socket, HttpEndPointListener epl, bool secure,
X509Certificate cert, ICryptoProvider cryptoProvider, IStreamHelper streamHelper, IFileSystem fileSystem,
IEnvironmentInfo environment)
{
_logger = logger;
this._socket = socket;
this._epl = epl;
this.secure = secure;
this.cert = cert;
_cryptoProvider = cryptoProvider;
_streamHelper = streamHelper;
_fileSystem = fileSystem;
_environment = environment;
if (secure == false)
{
_stream = new SocketStream(_socket, false);
}
else
{
ssl_stream = new SslStream(new SocketStream(_socket, false), false, (t, c, ch, e) =>
{
if (c == null)
{
return(true);
}
//var c2 = c as X509Certificate2;
//if (c2 == null)
//{
// c2 = new X509Certificate2(c.GetRawCertData());
//}
//_clientCert = c2;
//_clientCertErrors = new int[] { (int)e };
return(true);
});
_stream = ssl_stream;
}
}
private static async void ProcessAccept(SocketAsyncEventArgs args)
{
HttpEndPointListener epl = (HttpEndPointListener)args.UserToken;
if (epl._closed)
{
return;
}
var acceptSocket = args.AcceptSocket;
// http://msdn.microsoft.com/en-us/library/system.net.sockets.acceptSocket.acceptasync%28v=vs.110%29.aspx
// Under certain conditions ConnectionReset can occur
// Need to attept to re-accept
if (args.SocketError == SocketError.ConnectionReset)
{
epl._logger.Error("SocketError.ConnectionReset reported. Attempting to re-accept.");
TryClose(acceptSocket);
Accept(epl._socket, epl);
return;
}
if (acceptSocket != null)
{
try
{
await epl.ProcessAccept(acceptSocket).ConfigureAwait(false);
}
catch (Exception ex)
{
epl._logger.ErrorException("Error in ProcessAccept", ex);
TryClose(acceptSocket);
Accept(epl._socket, epl);
return;
}
}
// Accept the next connection request
Accept(epl._socket, args, ref acceptSocket);
}
private static void AddPrefixInternal(ILogger logger, string p, HttpListener listener)
{
int start = p.IndexOf(':') + 3;
int colon = p.IndexOf(':', start);
if (colon != -1)
{
// root can't be -1 here, since we've already checked for ending '/' in ListenerPrefix.
int root = p.IndexOf('/', colon, p.Length - colon);
string portString = p.Substring(colon + 1, root - colon - 1);
int port;
if (!int.TryParse(portString, out port) || port <= 0 || port >= 65536)
{
throw new HttpListenerException((int)HttpStatusCode.BadRequest, "net_invalid_port");
}
}
ListenerPrefix lp = new ListenerPrefix(p);
if (lp.Host != "*" && lp.Host != "+" && Uri.CheckHostName(lp.Host) == UriHostNameType.Unknown)
{
throw new HttpListenerException((int)HttpStatusCode.BadRequest, "net_listener_host");
}
if (lp.Path.IndexOf('%') != -1)
{
throw new HttpListenerException((int)HttpStatusCode.BadRequest, "net_invalid_path");
}
if (lp.Path.IndexOf("//", StringComparison.Ordinal) != -1)
{
throw new HttpListenerException((int)HttpStatusCode.BadRequest, "net_invalid_path");
}
// listens on all the interfaces if host name cannot be parsed by IPAddress.
HttpEndPointListener epl = GetEPListener(logger, lp.Host, lp.Port, listener, lp.Secure);
epl.AddPrefix(lp, listener);
}
private static HttpEndPointListener GetEPListener(ILogger logger, string host, int port, HttpListener listener, bool secure)
{
IPAddress addr;
if (host == "*" || host == "+")
{
addr = GetIpAnyAddress(listener);
}
else
{
const int NotSupportedErrorCode = 50;
try
{
addr = Dns.GetHostAddresses(host)[0];
}
catch
{
// Throw same error code as windows, request is not supported.
throw new HttpListenerException(NotSupportedErrorCode, "net_listener_not_supported");
}
if (IPAddress.Any.Equals(addr))
{
// Don't support listening to 0.0.0.0, match windows behavior.
throw new HttpListenerException(NotSupportedErrorCode, "net_listener_not_supported");
}
}
Dictionary <int, HttpEndPointListener> p = null;
if (s_ipEndPoints.ContainsKey(addr))
{
p = s_ipEndPoints[addr];
}
else
{
p = new Dictionary <int, HttpEndPointListener>();
s_ipEndPoints[addr] = p;
}
HttpEndPointListener epl = null;
if (p.ContainsKey(port))
{
epl = p[port];
}
else
{
try
{
epl = new HttpEndPointListener(listener, addr, port, secure, listener.Certificate, logger, listener.CryptoProvider, listener.SocketFactory, listener.MemoryStreamFactory, listener.TextEncoding, listener.FileSystem, listener.EnvironmentInfo);
}
catch (SocketException ex)
{
throw new HttpListenerException(ex.ErrorCode, ex.Message);
}
p[port] = epl;
}
return(epl);
}
