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/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_SESSION_HPP_INCLUDED__
#define __ZMQ_SESSION_HPP_INCLUDED__
#include "i_inout.hpp"
#include "owned.hpp"
#include "options.hpp"
#include "blob.hpp"
#include "pipe.hpp"
namespace zmq
{
class session_t :
public owned_t,
public i_inout,
public i_reader_events,
public i_writer_events
{
public:
// Creates unnamed session.
session_t (object_t *parent_, socket_base_t *owner_,
const options_t &options_);
// Creates named session.
session_t (object_t *parent_, socket_base_t *owner_,
const options_t &options_, const blob_t &peer_identity_);
// i_inout interface implementation.
bool read (::zmq_msg_t *msg_);
bool write (::zmq_msg_t *msg_);
void flush ();
void detach (owned_t *reconnecter_);
class io_thread_t *get_io_thread ();
class socket_base_t *get_owner ();
uint64_t get_ordinal ();
void attach_pipes (class reader_t *inpipe_, class writer_t *outpipe_,
const blob_t &peer_identity_);
// i_reader_events interface implementation.
void activated (class reader_t *pipe_);
void terminated (class reader_t *pipe_);
// i_writer_events interface implementation.
void activated (class writer_t *pipe_);
void terminated (class writer_t *pipe_);
private:
~session_t ();
// Define the delayed termination. (I.e. termination is postponed
// till all the data is flushed to the kernel.)
bool is_terminable ();
// Handlers for incoming commands.
void process_plug ();
void process_unplug ();
void process_attach (struct i_engine *engine_,
const blob_t &peer_identity_);
// Inbound pipe, i.e. one the session is getting messages from.
class reader_t *in_pipe;
// This flag is true if the remainder of the message being processed
// is still in the in pipe.
bool incomplete_in;
// If true, in_pipe is active. Otherwise there are no messages to get.
bool active;
// Outbound pipe, i.e. one the socket is sending messages to.
class writer_t *out_pipe;
struct i_engine *engine;
// Session is identified by ordinal in the case when it was created
// before connection to the peer was established and thus we are
// unaware of peer's identity.
uint64_t ordinal;
// Identity of the peer.
blob_t peer_identity;
// Inherited socket options.
options_t options;
session_t (const session_t&);
void operator = (const session_t&);
};
}
#endif
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