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-/*
- Copyright (c) 2012 Martin Lucina <martin@lucina.net>
-
- This file is part of Crossroads I/O.
-
- Crossroads I/O is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- Crossroads I/O 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 GNU Lesser General Public
- License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef __XS_UDP_RECEIVER_HPP_INCLUDED__
-#define __XS_UDP_RECEIVER_HPP_INCLUDED__
-
-#include "platform.hpp"
-
-#include "io_object.hpp"
-#include "i_engine.hpp"
-#include "options.hpp"
-#include "decoder.hpp"
-#include "address.hpp"
-
-namespace xs
-{
-
- class io_thread_t;
- class session_base_t;
-
- class udp_receiver_t : public io_object_t, public i_engine
- {
-
- public:
-
- udp_receiver_t (xs::io_thread_t *parent_, const options_t &options_);
- ~udp_receiver_t ();
-
- int init (const char *address_);
-
- // i_engine interface implementation.
- void plug (xs::io_thread_t *io_thread_,
- xs::session_base_t *session_);
- void unplug ();
- void terminate ();
- void activate_in ();
- void activate_out ();
-
- // i_poll_events interface implementation.
- void in_event (fd_t fd_);
- void out_event (fd_t fd_);
-
- private:
-
- // We don't support forwarding subscriptions upstream (yet).
- void drop_subscriptions ();
-
- // Underlying UDP socket.
- fd_t socket;
- handle_t socket_handle;
-
- // Socket address.
- address_t address;
-
- // Socket options.
- options_t options;
-
- // Decoder for this socket.
- decoder_t *decoder;
-
- // Amount of unprocessed data waiting in decoder, if any.
- ssize_t pending_bytes;
-
- // Pointer to unprocessed data in buffer, if any.
- unsigned char *pending_p;
-
- // Buffer for data to process.
- unsigned char data [pgm_max_tpdu];
-
- // Associated session.
- xs::session_base_t *session;
-
- // UDP header size.
- static const size_t udp_header_size = 6;
-
- // Last sequence number seen, 0 if none.
- uint32_t last_seq_no;
-
- udp_receiver_t (const udp_receiver_t&);
- const udp_receiver_t &operator = (const udp_receiver_t&);
- };
-
-}
-
-#endif