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//
// System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.cs
//
// Author: Rodrigo Moya (rodrigo@ximian.com)
// Lluis Sanchez Gual (lsg@ctv.es)
//
// 2002 (C) Copyright, Ximian, Inc.
//
using System.Collections;
using System.Runtime.Remoting.Messaging;
using System.Text.RegularExpressions;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.IO;
using System.Runtime.Remoting.Channels.Simple;
namespace System.Runtime.Remoting.Channels.Tcp
{
public class TcpServerChannel : IChannelReceiver, IChannel
{
int port = 0;
string name = "tcp";
string host;
int priority = 1;
Thread server_thread = null;
TcpListener listener;
TcpServerTransportSink sink;
ChannelDataStore channel_data;
void Init (IServerChannelSinkProvider serverSinkProvider)
{
if (serverSinkProvider == null) {
// FIXME: change soap for binary
serverSinkProvider = new SimpleServerFormatterSinkProvider ();
}
host = Dns.GetHostByName(Dns.GetHostName()).HostName;
string [] uris = null;
if (port != 0) {
uris = new String [1];
uris [0] = GetChannelUri ();
}
// Gets channel data from the chain of channel providers
channel_data = new ChannelDataStore (uris);
IServerChannelSinkProvider provider = serverSinkProvider;
while (provider != null)
{
provider.GetChannelData(channel_data);
provider = provider.Next;
}
// Creates the sink chain that will process all incoming messages
IServerChannelSink next_sink = ChannelServices.CreateServerChannelSinkChain (serverSinkProvider, this);
sink = new TcpServerTransportSink (next_sink);
listener = new TcpListener (port);
StartListening (null);
}
public TcpServerChannel (int port)
{
this.port = port;
Init (null);
}
public TcpServerChannel (IDictionary properties,
IServerChannelSinkProvider serverSinkProvider)
{
port = Int32.Parse ((string)properties ["port"]);
Init (serverSinkProvider);
}
public TcpServerChannel (string name, int port,
IServerChannelSinkProvider serverSinkProvider)
{
this.name = name;
this.port = port;
Init (serverSinkProvider);
}
public TcpServerChannel (string name, int port)
{
this.name = name;
this.port = port;
Init (null);
}
public object ChannelData
{
get {
return channel_data;
}
}
public string ChannelName
{
get {
return name;
}
}
public int ChannelPriority
{
get {
return priority;
}
}
public string GetChannelUri ()
{
return "tcp://" + host + ":" + port;
}
public string[] GetUrlsForUri (string uri)
{
if (!uri.StartsWith ("/")) uri = "/" + uri;
string [] chnl_uris = channel_data.ChannelUris;
string [] result = new String [chnl_uris.Length];
for (int i = 0; i < chnl_uris.Length; i++)
result [i] = chnl_uris [i] + uri;
return result;
}
public string Parse (string url, out string objectURI)
{
return TcpChannel.ParseChannelUrl (url, out objectURI);
}
void WaitForConnections ()
{
while (true)
{
TcpClient client = listener.AcceptTcpClient ();
ClientConnection reader = new ClientConnection (client, sink);
ThreadPool.QueueUserWorkItem ( new WaitCallback( reader.ProcessMessages));
}
}
public void StartListening (object data)
{
if (server_thread == null) {
listener.Start ();
if (port == 0) {
port = ((IPEndPoint)listener.LocalEndpoint).Port;
channel_data.ChannelUris = new String [1];
channel_data.ChannelUris [0] = GetChannelUri ();
}
server_thread = new Thread (new ThreadStart (WaitForConnections));
server_thread.IsBackground = true;
server_thread.Start ();
}
}
public void StopListening (object data)
{
if (server_thread != null) {
server_thread.Abort ();
server_thread = null;
listener.Stop ();
}
}
}
class ClientConnection
{
TcpClient _client;
TcpServerTransportSink _sink;
Stream _stream;
byte[] _buffer = new byte[TcpMessageIO.DefaultStreamBufferSize];
public ClientConnection (TcpClient client, TcpServerTransportSink sink)
{
_client = client;
_sink = sink;
}
public Stream Stream
{
get { return _stream; }
}
public byte[] Buffer
{
get { return _buffer; }
}
public void ProcessMessages(object data)
{
_stream = _client.GetStream();
bool end = false;
while (!end)
{
MessageType type = TcpMessageIO.ReceiveMessageType (_stream);
switch (type)
{
case MessageType.MethodMessage:
_sink.InternalProcessMessage (this);
break;
case MessageType.CancelSignal:
end = true;
break;
}
}
_stream.Close();
}
}
}
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