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// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
namespace IceSSL
{
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Security.Cryptography.X509Certificates;
using System.Text;
class AcceptorI : IceInternal.Acceptor
{
public void close()
{
Debug.Assert(_acceptFd == null);
if(_fd != null)
{
IceInternal.Network.closeSocketNoThrow(_fd);
_fd = null;
}
}
public IceInternal.EndpointI listen()
{
try
{
_addr = IceInternal.Network.doBind(_fd, _addr);
IceInternal.Network.doListen(_fd, _backlog);
}
catch(SystemException)
{
_fd = null;
throw;
}
_endpoint = _endpoint.endpoint(this);
return _endpoint;
}
public bool startAccept(IceInternal.AsyncCallback callback, object state)
{
//
// The plug-in may not be fully initialized.
//
if(!_instance.initialized())
{
Ice.PluginInitializationException ex = new Ice.PluginInitializationException();
ex.reason = "IceSSL: plug-in is not initialized";
throw ex;
}
try
{
_result = _fd.BeginAccept(delegate(IAsyncResult result)
{
if(!result.CompletedSynchronously)
{
callback(result.AsyncState);
}
}, state);
return _result.CompletedSynchronously;
}
catch(SocketException ex)
{
throw new Ice.SocketException(ex);
}
}
public void finishAccept()
{
if(_fd != null)
{
Debug.Assert(_result != null);
try
{
_acceptFd = _fd.EndAccept(_result);
_result = null;
}
catch(SocketException ex)
{
_acceptError = ex;
}
}
}
public IceInternal.Transceiver accept()
{
if(_acceptFd == null)
{
throw _acceptError;
}
Socket acceptFd = _acceptFd;
_acceptFd = null;
_acceptError = null;
return new TransceiverI(_instance, new IceInternal.StreamSocket(_instance, acceptFd), _adapterName, true);
}
public string protocol()
{
return _instance.protocol();
}
public override string ToString()
{
return IceInternal.Network.addrToString(_addr);
}
public string toDetailedString()
{
StringBuilder s = new StringBuilder("local address = ");
s.Append(ToString());
List<string> intfs = IceInternal.Network.getHostsForEndpointExpand(_addr.Address.ToString(),
_instance.protocolSupport(),
true);
if(intfs.Count != 0)
{
s.Append("\nlocal interfaces = ");
s.Append(String.Join(", ", intfs.ToArray()));
}
return s.ToString();
}
internal int effectivePort()
{
return _addr.Port;
}
internal AcceptorI(EndpointI endpoint, Instance instance, string adapterName, string host, int port)
{
_endpoint = endpoint;
_instance = instance;
_adapterName = adapterName;
_backlog = instance.properties().getPropertyAsIntWithDefault("Ice.TCP.Backlog", 511);
//
// .NET requires that a certificate be supplied.
//
X509Certificate2Collection certs = instance.certs();
if(certs.Count == 0)
{
Ice.SecurityException ex = new Ice.SecurityException();
ex.reason = "IceSSL: certificate required for server endpoint";
throw ex;
}
try
{
int protocol = instance.protocolSupport();
_addr = IceInternal.Network.getAddressForServer(host, port, protocol, instance.preferIPv6()) as
IPEndPoint;
_fd = IceInternal.Network.createServerSocket(false, _addr.AddressFamily, protocol);
IceInternal.Network.setBlock(_fd, false);
IceInternal.Network.setTcpBufSize(_fd, _instance);
if(IceInternal.AssemblyUtil.platform_ != IceInternal.AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow
// re-using the socket even if it's in the TIME_WAIT
// state. On Windows, this doesn't appear to be
// necessary and enabling SO_REUSEADDR would actually
// not be a good thing since it allows a second
// process to bind to an address even it's already
// bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
IceInternal.Network.setReuseAddress(_fd, true);
}
}
catch(System.Exception)
{
_fd = null;
throw;
}
}
private EndpointI _endpoint;
private Instance _instance;
private string _adapterName;
private Socket _fd;
private Socket _acceptFd;
private System.Exception _acceptError;
private int _backlog;
private IPEndPoint _addr;
private IAsyncResult _result;
}
}
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