本文为看雪论坛优秀文章
看雪论坛作者ID:xiaoduoduo
---------------MQTT PUBLISH- ------40bytes-------------------------------------------
| 30 26 00 14 68 6f 6d 65 2f 67 61 72 64 65 6e 2f |0&..home/garden/|
| 66 6f 75 6e 74 61 69 6e 31 32 33 34 35 36 37 38 |fountain12345678|
| 39 30 61 62 63 64 65 66 |90abcdef
static void process_mqtt_msg(mqtt_waf_msg *req)
{
......
len = len_len = 0;
p = req->buf + 1;
eop = &req->buf[req->pos];
while (p < eop) {
lc = *((const unsigned char *) p++);
len += (lc & 0x7f) << 7 * len_len;
len_len++;
if (!(lc & 0x80)) break;
if (len_len > 4){
req->msg_state = MQTT_MSG_ERROR;
return;
}
}
.....
}
......
switch (mqtt_msg_type)
{
case MQTT_CONNECT:
req->msg_state = mqtt_connect(req,p,end,&mm);
break;
case MQTT_CONNACK:
break;
case MQTT_PUBLISH:
req->msg_state = mqtt_publish(req,p,end,&mm);
break;
case MQTT_SUBSCRIBE:
req->msg_state = mqtt_subscribe(req,p,end,&mm);
break;
case MQTT_UNSUBSCRIBE:
req->msg_state = mqtt_unsubscribe(req,p,end,&mm);
......
1、CONNECT连接服务器
--------------MQTT CONNECT-----105bytes-----------------------------
| 10 67 00 04 4d 51 54 54 04 c2 00 3c 00 19 4d 51 |.g..MQTT...<..MQ|
| 54 54 5f 46 58 5f 43 6c 69 65 6e 74 5f 39 69 75 |TT_FX_Client_9iu|
| 79 38 37 36 35 35 35 00 12 69 6f 74 66 72 65 65 |y876555..iotfree|
| 74 65 73 74 2f 74 68 69 6e 67 30 00 2c 59 55 37 |test/thing0.,YU7|
| 54 6f 76 38 7a 46 57 2b 57 75 61 4c 78 39 73 39 |Tov8zFW+WuaLx9s9|
| 49 33 4d 4b 79 63 6c 69 65 39 53 47 44 75 75 4e |I3MKyclie9SGDuuN|
| 6b 6c 36 6f 39 4c 58 6f 3d |kl6o9LXo=
10
67
00 04
4d 51 54 54
04
c2
00 3c
00 19
4d 51 54 54 5f 46 58 5f 43 6c 69 65 6e 74 5f 39 69 75 79 38 37 36 35 35 35
00 12
69 6f 74 66 72 65 65 74 65 73 74 2f 74 68 69 6e 67 30
00 2c
59 55 37 ......6f 3d
2、PUBLISH发消息
30
26
00 14
68 6f 6d 65 2f 67 61 72 64 65 6e 2f 66 6f 75 6e
31 32 33 34 35 36 37 38 39 30 61 62 63 64 65 66
3、SUBSCRIBE订阅消息
---------------MQTT SUBSCRIBE------33bytes-----------------------------
| 82 1f 00 01 00 1a 68 6f 6d 65 2f 67 61 72 64 65 |......home/garde|
| 6e 2f 66 6f 75 6e 74 61 69 6e 64 65 6c 65 74 65 |n/fountaindelete|
| 00
82
1f
00 01
00 1a
68 6f 6d 65 2f 67 61 72 64 65 6e 2f 66 6f 75 6e 74 61 69 6e 64 65 6c 65 74 65
00
4、UNSUBSCRIBE取消订阅消息
---------------MQTT UNSUBSCRIBE-------32bytes-----------------------------
| a2 1e 00 02 00 1a 68 6f 6d 65 2f 67 61 72 64 65 |......home/garde|
| 6e 2f 66 6f 75 6e 74 61 69 6e 64 65 6c 65 74 65 |n/fountaindelete|
a2
1e
00 02
00 1a
68 6f 6d 65 2f 67 61 72 64 65 6e 2f 66 6f 75 6e 74 61 69 6e 64 65 6c 65 74 65
看雪ID:xiaoduoduo
https://bbs.pediy.com/user-10578.htm
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