/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file identityStream.h
 * @author drose
 * @date 2002-10-09
 */

#ifndef IDENTITYSTREAM_H
#define IDENTITYSTREAM_H

#include "pandabase.h"

// This module is not compiled if OpenSSL is not available.
#ifdef HAVE_OPENSSL

#include "socketStream.h"
#include "identityStreamBuf.h"

class HTTPChannel;
class BioStreamPtr;

/**
 * An input stream object that reads data from a source istream, but
 * automatically decodes the "identity" transfer-coding specified by an HTTP
 * server.
 *
 * In practice, this just means it reads from the sub stream (like a
 * SubStreamBuf) up to but not past the specified content-length.  (If the
 * content-length was unspecified, this class cannot be used.)  It also
 * updates the HTTPChannel when the stream is completely read.  No need to
 * export from DLL.
 */
class IIdentityStream : public ISocketStream {
public:
  INLINE IIdentityStream();
  INLINE IIdentityStream(BioStreamPtr *source, HTTPChannel *doc,
                         bool has_content_length, size_t content_length);

  INLINE IIdentityStream &open(BioStreamPtr *source, HTTPChannel *doc,
                               bool has_content_length, size_t content_length);
  virtual ~IIdentityStream();

  virtual bool is_closed();
  virtual void close();
  virtual ReadState get_read_state();

private:
  IdentityStreamBuf _buf;
};

#include "identityStream.I"

#endif  // HAVE_OPENSSL

#endif