[457] | 1 | /*
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| 2 | * Redistribution and use in source and binary forms, with or without modification,
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| 3 | * are permitted provided that the following conditions are met:
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| 4 | *
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| 5 | * 1. Redistributions of source code must retain the above copyright notice,
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| 6 | * this list of conditions and the following disclaimer.
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| 7 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 8 | * this list of conditions and the following disclaimer in the documentation
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| 9 | * and/or other materials provided with the distribution.
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| 10 | * 3. The name of the author may not be used to endorse or promote products
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| 11 | * derived from this software without specific prior written permission.
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| 12 | *
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| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 14 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 15 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 16 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 17 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 18 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 19 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 20 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 21 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 22 | * OF SUCH DAMAGE.
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| 23 | *
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| 24 | * This file is part of the lwIP TCP/IP stack.
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| 25 | *
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| 26 | * Author: Dirk Ziegelmeier <dziegel@gmx.de>
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| 27 | *
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| 28 | */
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| 29 |
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| 30 | #include "lwip/apps/mqtt.h"
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| 31 | #include "mqtt_example.h"
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| 32 |
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| 33 | #if LWIP_TCP
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| 34 |
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| 35 | /** Define this to a compile-time IP address initialization
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| 36 | * to connect anything else than IPv4 loopback
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| 37 | */
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| 38 | #ifndef LWIP_MQTT_EXAMPLE_IPADDR_INIT
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| 39 | #if LWIP_IPV4
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| 40 | #define LWIP_MQTT_EXAMPLE_IPADDR_INIT = IPADDR4_INIT(IPADDR_LOOPBACK)
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| 41 | #else
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| 42 | #define LWIP_MQTT_EXAMPLE_IPADDR_INIT
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| 43 | #endif
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| 44 | #endif
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| 45 |
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| 46 | static ip_addr_t mqtt_ip LWIP_MQTT_EXAMPLE_IPADDR_INIT;
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| 47 | static mqtt_client_t* mqtt_client;
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| 48 |
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| 49 | static const struct mqtt_connect_client_info_t mqtt_client_info =
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| 50 | {
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| 51 | "test",
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| 52 | NULL, /* user */
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| 53 | NULL, /* pass */
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| 54 | 100, /* keep alive */
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| 55 | NULL, /* will_topic */
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| 56 | NULL, /* will_msg */
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| 57 | 0, /* will_qos */
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| 58 | 0 /* will_retain */
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| 59 | #if LWIP_ALTCP && LWIP_ALTCP_TLS
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| 60 | , NULL
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| 61 | #endif
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| 62 | };
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| 63 |
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| 64 | static void
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| 65 | mqtt_incoming_data_cb(void *arg, const u8_t *data, u16_t len, u8_t flags)
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| 66 | {
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| 67 | const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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| 68 | LWIP_UNUSED_ARG(data);
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| 69 |
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| 70 | printf("MQTT client \"%s\" data cb: len %d, flags %d\n", client_info->client_id,
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| 71 | (int)len, (int)flags);
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| 72 | }
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| 73 |
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| 74 | static void
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| 75 | mqtt_incoming_publish_cb(void *arg, const char *topic, u32_t tot_len)
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| 76 | {
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| 77 | const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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| 78 |
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| 79 | printf("MQTT client \"%s\" publish cb: topic %s, len %d\n", client_info->client_id,
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| 80 | topic, (int)tot_len);
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| 81 | }
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| 82 |
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| 83 | static void
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| 84 | mqtt_request_cb(void *arg, err_t err)
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| 85 | {
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| 86 | const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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| 87 |
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| 88 | printf("MQTT client \"%s\" request cb: err %d\n", client_info->client_id, (int)err);
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| 89 | }
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| 90 |
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| 91 | static void
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| 92 | mqtt_connection_cb(mqtt_client_t *client, void *arg, mqtt_connection_status_t status)
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| 93 | {
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| 94 | const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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| 95 | LWIP_UNUSED_ARG(client);
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| 96 |
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| 97 | printf("MQTT client \"%s\" connection cb: status %d\n", client_info->client_id, (int)status);
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| 98 |
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| 99 | if (status == MQTT_CONNECT_ACCEPTED) {
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| 100 | mqtt_sub_unsub(client,
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| 101 | "topic_qos1", 1,
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| 102 | mqtt_request_cb, LWIP_CONST_CAST(void*, client_info),
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| 103 | 1);
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| 104 | mqtt_sub_unsub(client,
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| 105 | "topic_qos0", 0,
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| 106 | mqtt_request_cb, LWIP_CONST_CAST(void*, client_info),
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| 107 | 1);
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| 108 | }
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| 109 | }
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| 110 | #endif /* LWIP_TCP */
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| 111 |
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| 112 | void
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| 113 | mqtt_example_init(void)
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| 114 | {
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| 115 | #if LWIP_TCP
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| 116 | mqtt_client = mqtt_client_new();
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| 117 |
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| 118 | mqtt_set_inpub_callback(mqtt_client,
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| 119 | mqtt_incoming_publish_cb,
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| 120 | mqtt_incoming_data_cb,
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| 121 | LWIP_CONST_CAST(void*, &mqtt_client_info));
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| 122 |
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| 123 | mqtt_client_connect(mqtt_client,
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| 124 | &mqtt_ip, MQTT_PORT,
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| 125 | mqtt_connection_cb, LWIP_CONST_CAST(void*, &mqtt_client_info),
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| 126 | &mqtt_client_info);
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| 127 | #endif /* LWIP_TCP */
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| 128 | }
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