BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
2 | * @file |
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3 | * MQTT client (private interface) |
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4 | */ |
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5 | |||
6 | /* |
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7 | * Copyright (c) 2016 Erik Andersson |
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8 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without modification, |
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11 | * are permitted provided that the following conditions are met: |
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12 | * |
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13 | * 1. Redistributions of source code must retain the above copyright notice, |
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14 | * this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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16 | * this list of conditions and the following disclaimer in the documentation |
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17 | * and/or other materials provided with the distribution. |
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18 | * 3. The name of the author may not be used to endorse or promote products |
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19 | * derived from this software without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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30 | * OF SUCH DAMAGE. |
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31 | * |
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32 | * This file is part of the lwIP TCP/IP stack. |
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33 | * |
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34 | * Author: Erik Andersson |
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35 | * |
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36 | */ |
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37 | #ifndef LWIP_HDR_APPS_MQTT_PRIV_H |
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38 | #define LWIP_HDR_APPS_MQTT_PRIV_H |
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39 | |||
40 | #include "lwip/apps/mqtt.h" |
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41 | #include "lwip/altcp.h" |
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42 | |||
43 | #ifdef __cplusplus |
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44 | extern "C" { |
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45 | #endif |
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46 | |||
47 | /** Pending request item, binds application callback to pending server requests */ |
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48 | struct mqtt_request_t |
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49 | { |
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50 | /** Next item in list, NULL means this is the last in chain, |
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51 | next pointing at itself means request is unallocated */ |
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52 | struct mqtt_request_t *next; |
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53 | /** Callback to upper layer */ |
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54 | mqtt_request_cb_t cb; |
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55 | void *arg; |
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56 | /** MQTT packet identifier */ |
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57 | u16_t pkt_id; |
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58 | /** Expire time relative to element before this */ |
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59 | u16_t timeout_diff; |
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60 | }; |
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61 | |||
62 | /** Ring buffer */ |
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63 | struct mqtt_ringbuf_t { |
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64 | u16_t put; |
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65 | u16_t get; |
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66 | u8_t buf[MQTT_OUTPUT_RINGBUF_SIZE]; |
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67 | }; |
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68 | |||
69 | /** MQTT client */ |
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70 | struct mqtt_client_s |
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71 | { |
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72 | /** Timers and timeouts */ |
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73 | u16_t cyclic_tick; |
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74 | u16_t keep_alive; |
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75 | u16_t server_watchdog; |
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76 | /** Packet identifier generator*/ |
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77 | u16_t pkt_id_seq; |
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78 | /** Packet identifier of pending incoming publish */ |
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79 | u16_t inpub_pkt_id; |
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80 | /** Connection state */ |
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81 | u8_t conn_state; |
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82 | struct altcp_pcb *conn; |
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83 | /** Connection callback */ |
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84 | void *connect_arg; |
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85 | mqtt_connection_cb_t connect_cb; |
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86 | /** Pending requests to server */ |
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87 | struct mqtt_request_t *pend_req_queue; |
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88 | struct mqtt_request_t req_list[MQTT_REQ_MAX_IN_FLIGHT]; |
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89 | void *inpub_arg; |
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90 | /** Incoming data callback */ |
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91 | mqtt_incoming_data_cb_t data_cb; |
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92 | mqtt_incoming_publish_cb_t pub_cb; |
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93 | /** Input */ |
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94 | u32_t msg_idx; |
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95 | u8_t rx_buffer[MQTT_VAR_HEADER_BUFFER_LEN]; |
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96 | /** Output ring-buffer */ |
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97 | struct mqtt_ringbuf_t output; |
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98 | }; |
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99 | |||
100 | #ifdef __cplusplus |
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101 | } |
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102 | #endif |
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103 | |||
104 | #endif /* LWIP_HDR_APPS_MQTT_PRIV_H */ |