The data in the tunnel is saved for `10 minutes`. If it exceeds this time and is not extracted, the data will automatically disappear;
The data in the tunnel are arranged sequentially, following the first-in-first-out principle, and the first data is extracted from the head of the queue each time;
#Write data to tunnel
```javascript
WXAPI.channelDataPush(key, content)
```
+ key custom tunnel encoding
+ content content sent to the tunnel
```json
{
"code": 0,
"msg": "success"
}
```
# Extract data from tunnel
```javascript
WXAPI.channelDataPull(key)
```
+ key custom tunnel encoding
```json
{
"code": 0,
"data": "test",
"msg": "success"
}
```
+ data is the content read in the tunnel