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72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_V2_DECODER_HPP_INCLUDED__
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#define __ZMQ_V2_DECODER_HPP_INCLUDED__
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#include "decoder.hpp"
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#include "decoder_allocators.hpp"
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namespace zmq
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{
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// Decoder for ZMTP/2.x framing protocol. Converts data stream into messages.
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// The class has to inherit from shared_message_memory_allocator because
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// the base class calls allocate in its constructor.
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class v2_decoder_t
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: public decoder_base_t<v2_decoder_t, shared_message_memory_allocator>
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{
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public:
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v2_decoder_t (size_t bufsize_, int64_t maxmsgsize_, bool zero_copy_);
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virtual ~v2_decoder_t ();
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// i_decoder interface.
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virtual msg_t *msg () { return &_in_progress; }
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private:
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int flags_ready (unsigned char const *);
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int one_byte_size_ready (unsigned char const *);
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int eight_byte_size_ready (unsigned char const *);
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int message_ready (unsigned char const *);
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int size_ready (uint64_t size_, unsigned char const *);
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unsigned char _tmpbuf[8];
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unsigned char _msg_flags;
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msg_t _in_progress;
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const bool _zero_copy;
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const int64_t _max_msg_size;
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v2_decoder_t (const v2_decoder_t &);
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void operator= (const v2_decoder_t &);
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};
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}
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#endif
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