simplify the re-connect routine
The of current requested commands will not be shared thru Client instance, this can enable `request` inside respose callback.

In the existing code,

```python
def _callback (response, ) :
    for i in response.body :
        _client.members().request()

    return

_client = Client()
_client.stream(Type='*').add_callback(_callback, ).watch()
```

`stream` command must be called in every new event received, but after `members`
command requested, the event no longer received.

This patch can be possible this issue.