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3.7章节图表错位修复 #21

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Apr 5, 2017
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3.7章节图表错位修复 #21

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75 changes: 65 additions & 10 deletions mqtt/0307-PUBCOMP.md
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Expand Up @@ -6,12 +6,50 @@ PUBCOMP报文是对PUBREL报文的响应。它是QoS 2等级协议交换的第

##### 图例 3.18 – PUBCOMP报文固定报头

| **Bit** | **7** | **6** | **5** | **4** | **3** | **2** | **1** | **0** |
|---------|----------------------|--------|-------|-------|-------|-------|-------|-------|
| byte 1 | MQTT控制报文类型 (7) | 保留位 |
| | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| byte 2 | 剩余长度 (2) |
| | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
<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 (7)</td>
<td colspan="4" align="center">保留位</td>
</tr>
<tr>
<td></td>
<td align="center">0</td>
<td align="center">1</td>
<td align="center">1</td>
<td align="center">1</td>
<td align="center">0</td>
<td align="center">0</td>
<td align="center">0</td>
<td align="center">0</td>
</tr>
<tr>
<td>byte 2</td>
<td colspan="8" align="center">剩余长度 (2)</td>
</tr>
<tr>
<td></td>
<td align="center">0</td>
<td align="center">0</td>
<td align="center">0</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>
</table>

**剩余长度字段**

Expand All @@ -23,10 +61,27 @@ PUBCOMP报文是对PUBREL报文的响应。它是QoS 2等级协议交换的第

##### 图例 3.19 – PUBCOMP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>

### 3.7.3 有效载荷

Expand Down