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75 lines
2.4 KiB
75 lines
2.4 KiB
/*
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Copyright (c) 2013 Martin Sustrik All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom
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the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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#ifndef NN_STREAMHDR_INCLUDED
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#define NN_STREAMHDR_INCLUDED
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#include "../../transport.h"
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#include "../../aio/fsm.h"
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#include "../../aio/usock.h"
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#include "../../aio/timer.h"
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#include "../../utils/int.h"
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/* This state machine exchanges protocol headers on top of
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a stream-based bi-directional connection. */
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#define NN_STREAMHDR_OK 1
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#define NN_STREAMHDR_ERROR 2
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#define NN_STREAMHDR_STOPPED 3
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struct nn_streamhdr {
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/* The state machine. */
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struct nn_fsm fsm;
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int state;
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/* Used to timeout the protocol header exchange. */
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struct nn_timer timer;
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/* The underlying socket. */
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struct nn_usock *usock;
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/* The original owner of the underlying socket. */
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struct nn_fsm_owner usock_owner;
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/* Handle to the pipe. */
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struct nn_pipebase *pipebase;
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/* Protocol header. */
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uint8_t protohdr [8];
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/* Event fired when the state machine ends. */
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struct nn_fsm_event done;
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};
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void nn_streamhdr_init (struct nn_streamhdr *self, int src,
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struct nn_fsm *owner);
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void nn_streamhdr_term (struct nn_streamhdr *self);
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int nn_streamhdr_isidle (struct nn_streamhdr *self);
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void nn_streamhdr_start (struct nn_streamhdr *self, struct nn_usock *usock,
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struct nn_pipebase *pipebase);
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void nn_streamhdr_stop (struct nn_streamhdr *self);
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#endif
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