breeze/mqtt
1
0
Fork 0
mirror of https://github.com/mcxiaoke/mqtt.git synced 2026-02-07 23:20:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

3.10章节图表错位修复

Browse Source 
3.10章节图表错位修复
This commit is contained in:
Feng Guo
2017-04-05 14:04:04 +08:00
committed by GitHub
parent 04e4cf1739
commit ac64060fb5
1 changed files with 54 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
mqtt/0310-UNSUBSCRIBE.md
View File

@@ -6,11 +6,39 @@
##### 图例 3.28 – UNSUBSCRIBE报文固定报头
| **Bit** | **7** | **6** | **5** | **4** | **3** | **2** | **1** | **0** |
|---------|-----------------------|--------|-------|-------|-------|-------|-------|-------|
| byte 1 | MQTT控制报文类型 (10) | 保留位 |
| | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
| byte 2 | 剩余长度 |
<table style="text-align:center">
<tr>
<td align="center"><strong>Bit</strong></td>
<td align="center"><strong>7</strong></td>
<td align="center"><strong>6</strong></td>
<td align="center"><strong>5</strong></td>
<td align="center"><strong>4</strong></td>
<td align="center"><strong>3</strong></td>
<td align="center"><strong>2</strong></td>
<td align="center"><strong>1</strong></td>
<td align="center"><strong>0</strong></td>
</tr>
<tr>
<td>byte 1</td>
<td colspan="4" align="center">MQTT控制报文类型 (10)</td>
<td colspan="4" align="center">保留位</td>
</tr>
<tr>
<td></td>
<td align="center">1</td>
<td align="center">0</td>
<td align="center">1</td>
<td align="center">0</td>
<td align="center">0</td>
<td align="center">0</td>
<td align="center">1</td>
<td align="center">0</td>
</tr>
<tr>
<td>byte 2</td>
<td colspan="8" align="center">剩余长度</td>
</tr>
</table>
UNSUBSCRIBE报文固定报头的第3,2,1,0位是保留位且**必须**分别设置为0,0,1,0。服务端**必须**认为任何其它的值都是不合法的并关闭网络连接 \[MQTT-3.10.1-1\]。
@@ -24,10 +52,27 @@ UNSUBSCRIBE报文固定报头的第3,2,1,0位是保留位且**必须**分别设
##### 图例 3.29 – UNSUBSCRIBE报文可变报头
| **Bit** | **7** | **6** | **5** | **4** | **3** | **2** | **1** | **0** |
|---------|----------------|-------|-------|-------|-------|-------|-------|-------|
| byte 1 | 报文标识符 MSB |
| byte 2 | 报文标识符 LSB |
<table style="text-align:center">
<tr>
<td align="center"><strong>Bit</strong></td>
<td align="center"><strong>7</strong></td>
<td align="center"><strong>6</strong></td>
<td align="center"><strong>5</strong></td>
<td align="center"><strong>4</strong></td>
<td align="center"><strong>3</strong></td>
<td align="center"><strong>2</strong></td>
<td align="center"><strong>1</strong></td>
<td align="center"><strong>0</strong></td>
</tr>
<tr>
<td>byte 1</td>
<td colspan="8" align="center">报文标识符 MSB</td>
</tr>
<tr>
<td>byte 2</td>
<td colspan="8" align="center">报文标识符 LSB</td>
</tr>
</table>
### 3.10.3 有效载荷