/// <summary>
/// Returns a channel message sink that delivers messages to the specified URL or channel data object.
/// </summary>
/// <param name="url">The URL to which the new sink will deliver messages. Can be null.</param>
/// <param name="remoteChannelData">The channel data object of the remote host to which the new sink will deliver messages. Can be null.</param>
/// <param name="objectURI">When this method returns, contains a URI of the new channel message sink that delivers messages to the specified URL or channel data object. This parameter is passed uninitialized.</param>
/// <returns>
/// A channel message sink that delivers messages to the specified URL or channel data object, or null if the channel cannot connect to the given endpoint.
/// </returns>
/// <exception cref="T:System.Security.SecurityException">The immediate caller does not have infrastructure permission. </exception>
public IMessageSink CreateMessageSink(string url, object remoteChannelData, out string objectURI)
{
objectURI = null;
if (url == null)
{
TcpExChannelData channelData = remoteChannelData as TcpExChannelData;
if (channelData != null)
{
url = Manager.CreateUrl(channelData.ChannelID);
}
else
{
return(null);
}
}
if (Manager.Parse(url, out objectURI) != null)
{
IClientChannelSink clientChannelSink = clientSinkProvider.CreateSink(this, url, remoteChannelData);
IMessageSink messageSink = clientChannelSink as IMessageSink;
if (clientChannelSink != null && messageSink == null)
{
throw new RemotingException(LanguageResource.RemotingException_MessageSinkNotSet);
}
return(messageSink);
}
else
{
return(null);
}
}
/// <summary>
/// Receives channel data.
/// </summary>
/// <returns>True, if receiving was successfully, otherwise false</returns>
private bool ReceiveChannelInfo()
{
var stream = Stream;
if (stream != null)
{
BinaryFormatter formatter = new BinaryFormatter();
_remoteChannelData = (TcpExChannelData)formatter.Deserialize(stream);
Trace.WriteLine("TcpEx.Connection received remote ChannelInfo, ChannelID: {0}", _remoteChannelData.ChannelID);
return(true);
}
return(false);
}
/// <summary>
/// Instructs the current channel to start listening for requests.
/// </summary>
/// <param name="data">Optional initialization information.</param>
/// <exception cref="T:System.Security.SecurityException">The immediate caller does not have infrastructure permission. </exception>
public void StartListening(object data)
{
if (this.port != 0)
{
throw new InvalidOperationException("Channel is already listening. TcpEx currently only allows listening on one port.");
}
if (data is int)
{
this.port = Manager.StartListening((int)data, this, _bindToAddress);
channelData = new TcpExChannelData(this);
foreach (string url in Manager.GetAddresses(this.port, Guid.Empty))
{
Manager.BeginReadMessage(url, null, new AsyncCallback(messageSink.ReceiveMessage), url);
}
}
}
private void Initialise(TypeFilterLevel typeFilterLevel, IClientChannelSinkProvider clientSinkProvider, IServerChannelSinkProvider serverSinkProvider, int port, bool listen, bool keepAlive, ulong keepAliveTime, ulong KeepAliveInterval, short maxRetries, int retryDelay, IPAddress bindToAddress)
{
_tcpKeepAliveEnabled = keepAlive;
_tcpKeepAliveTime = keepAliveTime;
_tcpKeepAliveInterval = KeepAliveInterval;
_maxRetries = maxRetries;
_retryDelay = retryDelay;
_bindToAddress = bindToAddress;
if (clientSinkProvider == null)
{
clientSinkProvider = new BinaryClientFormatterSinkProvider();
}
if (serverSinkProvider == null)
{
Trace.WriteLine("Setting serialization filter: {0}", typeFilterLevel);
BinaryServerFormatterSinkProvider tempProvider = new BinaryServerFormatterSinkProvider();
tempProvider.TypeFilterLevel = typeFilterLevel;
serverSinkProvider = tempProvider;
}
// Initialise clientSinkProvider
this.clientSinkProvider = clientSinkProvider;
while (clientSinkProvider.Next != null)
{
clientSinkProvider = clientSinkProvider.Next;
}
clientSinkProvider.Next = new ClientTransportSinkProvider();
messageSink = new ServerTransportSink(ChannelServices.CreateServerChannelSinkChain(serverSinkProvider, this));
serverSinkProvider.GetChannelData(channelData);
if (listen)
{
StartListening(port);
}
channelData = new TcpExChannelData(this);
Manager.BeginReadMessage(_channelID, null, new AsyncCallback(messageSink.ReceiveMessage), _channelID);
}
private void Initialise(TypeFilterLevel typeFilterLevel, IClientChannelSinkProvider clientSinkProvider, IServerChannelSinkProvider serverSinkProvider, int port, bool listen, bool keepAlive, ulong keepAliveTime, ulong KeepAliveInterval, short maxRetries, int retryDelay, IPAddress bindToAddress)
{
_tcpKeepAliveEnabled = keepAlive;
_tcpKeepAliveTime = keepAliveTime;
_tcpKeepAliveInterval = KeepAliveInterval;
_maxRetries = maxRetries;
_retryDelay = retryDelay;
_bindToAddress = bindToAddress;
if (clientSinkProvider == null)
clientSinkProvider = new BinaryClientFormatterSinkProvider();
if (serverSinkProvider == null)
{
Trace.WriteLine("Setting serialization filter: {0}", typeFilterLevel);
BinaryServerFormatterSinkProvider tempProvider = new BinaryServerFormatterSinkProvider();
tempProvider.TypeFilterLevel = typeFilterLevel;
serverSinkProvider = tempProvider;
}
// Initialise clientSinkProvider
this.clientSinkProvider = clientSinkProvider;
while (clientSinkProvider.Next != null)
clientSinkProvider = clientSinkProvider.Next;
clientSinkProvider.Next = new ClientTransportSinkProvider();
messageSink = new ServerTransportSink(ChannelServices.CreateServerChannelSinkChain(serverSinkProvider, this));
serverSinkProvider.GetChannelData(channelData);
if (listen)
{
StartListening(port);
}
channelData = new TcpExChannelData(this);
Manager.BeginReadMessage(_channelID, null, new AsyncCallback(messageSink.ReceiveMessage), _channelID);
}
/// <summary>
/// Instructs the current channel to start listening for requests.
/// </summary>
/// <param name="data">Optional initialization information.</param>
/// <exception cref="T:System.Security.SecurityException">The immediate caller does not have infrastructure permission. </exception>
public void StartListening(object data)
{
if (port != 0)
throw new InvalidOperationException("Channel is already listening. TcpEx currently only allows listening on one port.");
if (data is int)
{
port = (int)data;
channelData = new TcpExChannelData(this);
ListenerSocket = Manager.StartListening(port, this, _bindToAddress);
ListenerAddresses = Manager.GetAddresses(port, Guid.Empty, true);
foreach (string url in ListenerAddresses)
{
Manager.BeginReadMessage(url, null, new AsyncCallback(messageSink.ReceiveMessage), url);
}
}
}
/// <summary>
/// Receives channel data.
/// </summary>
/// <returns>True, if receiving was successfully, otherwise false</returns>
private bool ReceiveChannelInfo()
{
Stream stream = this.Stream;
if (stream != null)
{
BinaryFormatter formatter = new BinaryFormatter();
_remoteChannelData = (TcpExChannelData)formatter.Deserialize(stream);
Trace.WriteLine("TcpEx.Connection received remote ChannelInfo, ChannelID: {0}", _remoteChannelData.ChannelID);
return true;
}
return false;
}
/// <summary>
/// Closes the connection.
/// </summary>
public void Close()
{
lock (_connectionsLockObject)
{
List<string> toBeDeleted = (from pair in _connections
where pair.Value == this
select pair.Key).ToList();
foreach (string key in toBeDeleted)
{
_connections.Remove(key);
}
}
LockRead();
LockWrite();
_socketRemoteAddress = null;
_socketRemotePort = 0;
if (_reader != null)
{
try
{
_reader.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_reader = null;
}
}
if (_writer != null)
{
try
{
_writer.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_writer = null;
}
}
if (_stream != null)
{
try
{
_stream.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_stream = null;
}
}
if (_socket != null)
{
try
{
_socket.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_socket = null;
}
}
if (_channel != null)
_channel = null;
if (_remoteChannelData != null)
_remoteChannelData = null;
ReleaseRead();
ReleaseWrite();
_isClosed = true;
}
/// <summary>
/// Closes the connection.
/// </summary>
public void Close()
{
lock (_connectionsLockObject)
{
var toBeDeleted =
from pair in _connections
where pair.Value == this
select pair.Key;
foreach (string key in toBeDeleted.ToList())
{
_connections.Remove(key);
}
}
LockRead();
LockWrite();
_socketRemoteAddress = null;
_socketRemotePort = 0;
if (_reader != null)
{
try
{
_reader.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_reader = null;
}
}
if (_writer != null)
{
try
{
_writer.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_writer = null;
}
}
if (_stream != null)
{
try
{
_stream.Close();
}
catch (ObjectDisposedException)
{
}
finally
{
_stream = null;
}
}
if (_socket != null)
{
try
{
_socket.Shutdown(SocketShutdown.Both);
_socket.Close();
}
catch (SocketException)
{
}
catch (ObjectDisposedException)
{
}
finally
{
_socket = null;
}
}
if (_channel != null)
{
_channel = null;
}
if (_remoteChannelData != null)
{
_remoteChannelData = null;
}
ReleaseRead();
ReleaseWrite();
_isClosed = true;
}
