# Host

#### \<path>

PIN所在的路径。表示path有三种模式，如下

* “/” 开头，通过路径定位需创建的PIN，如/protocols/simplebuzz
* “#”开头，通过PINNumber定位PIN
* “@”开头，通过PINID定位的PIN

必要选项。

#### host

```json
<path> {host}:{path}
```

\<path>中的host为address或MetaName，如：

Address: `1PKZnf7DxP69TFTHyzPc5KBidph6yuPKyG`，

```json
1PKZnf7DxP69TFTHyzPc5KBidph6yuPKyG:/protocols/simplebuzz
```

\<path>中带host，可声明该数据的发送来源，理解为主机头。非必要。

若host为MetaName，则长度不超过32字符，如： MetaName:`alice.metaid`


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