// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef REMOTING_PROTOCOL_JINGLE_STREAM_CONNECTOR_H_
#define REMOTING_PROTOCOL_JINGLE_STREAM_CONNECTOR_H_

#include <string>

#include "base/memory/scoped_ptr.h"
#include "net/base/completion_callback.h"
#include "remoting/protocol/channel_authenticator.h"
#include "remoting/protocol/jingle_channel_connector.h"
#include "remoting/protocol/session.h"

namespace cricket {
class TransportChannel;
}  // namespace cricket

namespace net {
class CertVerifier;
class StreamSocket;
class SSLSocket;
}  // namespace net

namespace remoting {
namespace protocol {

class JingleSession;

// JingleStreamConnector creates the named datagram channel in the supplied
// JingleSession, and uses PseudoTcp to turn it into a stream channel.  Within
// the stream channel SSL is used to secure the protocol stream.  Finally, the
// initiator authenticates the channel to the recipient by sending a digest
// based on a secret shared by the two parties, and keying material derived
// from the SSL session's master secret and nonces.
class JingleStreamConnector : public JingleChannelConnector {
 public:
  JingleStreamConnector(JingleSession* session,
                        const std::string& name,
                        const Session::StreamChannelCallback& callback);
  virtual ~JingleStreamConnector();

  // JingleChannelConnector implementation.
  virtual void Connect(scoped_ptr<ChannelAuthenticator> authenticator,
                       cricket::TransportChannel* raw_channel) OVERRIDE;

 private:
  bool EstablishTCPConnection(net::Socket* socket);
  void OnTCPConnect(int result);
  void OnAuthenticationDone(net::Error error, net::StreamSocket* socket);

  void NotifyDone(net::StreamSocket* socket);
  void NotifyError();

  JingleSession* session_;
  std::string name_;
  Session::StreamChannelCallback callback_;

  cricket::TransportChannel* raw_channel_;
  scoped_ptr<net::StreamSocket> tcp_socket_;
  scoped_ptr<net::SSLSocket> socket_;

  scoped_ptr<ChannelAuthenticator> authenticator_;

  DISALLOW_COPY_AND_ASSIGN(JingleStreamConnector);
};

}  // namespace protocol
}  // namespace remoting

#endif  // REMOTING_PROTOCOL_JINGLE_STREAM_CONNECTOR_H_