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3f6148abdf
This is supposed to become part of the ZMTP/1.1. The main differences from the ZMTP/1.0 framing protocol are: - flags field comes first, followed by the length field - long messages are signaled using a flag rather then 0xff escape - length field does not include the flags field, 0 is a valid value
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/*
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Copyright (c) 2009-2011 250bpm s.r.o.
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Copyright (c) 2007-2012 iMatix Corporation
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Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ 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 as published by
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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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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public 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_V1_DECODER_HPP_INCLUDED__
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#define __ZMQ_V1_DECODER_HPP_INCLUDED__
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#include "err.hpp"
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#include "msg.hpp"
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#include "decoder.hpp"
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#include "i_msg_sink.hpp"
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#include "stdint.hpp"
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namespace zmq
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{
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// Decoder for 0MQ v1 framing protocol. Converts data stream into messages.
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class v1_decoder_t : public decoder_base_t <v1_decoder_t>
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{
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public:
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v1_decoder_t (size_t bufsize_,
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int64_t maxmsgsize_, i_msg_sink *msg_sink_);
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virtual ~v1_decoder_t ();
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// i_decoder interface.
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virtual void set_msg_sink (i_msg_sink *msg_sink_);
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virtual bool stalled () const;
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private:
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bool flags_ready ();
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bool one_byte_size_ready ();
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bool eight_byte_size_ready ();
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bool message_ready ();
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i_msg_sink *msg_sink;
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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 int64_t maxmsgsize;
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v1_decoder_t (const v1_decoder_t&);
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void operator = (const v1_decoder_t&);
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};
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}
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#endif
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