连接websocket后，语音输入一段话，此时是正常的；然后不断开websocket服务，停留若干时间，再语音输入，则会报错误vad_feats's size is 0；最后如果重新建立websocket服务，则恢复正常

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🐛 Bug

连接websocket后，语音输入一段话，此时是正常的；然后不断开websocket服务，停留若干时间，再语音输入，则会报错误vad_feats's size is 0；最后如果重新建立websocket服务，则恢复正常

1.点击语音输入，连接上ws服务，输入喂喂喂，此时正常
2.松开语音输入，此时ws服务并未关闭，等待20分钟，再次输入
3.后台报错vad_feats's size is 0,前台也拿不到数据
4.如果设备重启ws服务，恢复正常

To Reproduce

Steps to reproduce the behavior (always include the command you ran):

1. Run cmd '....'
2. See error

Code sample

Expected behavior

Environment

• OS (e.g., Linux):
• FunASR Version (e.g., 1.0.0):
• ModelScope Version (e.g., 1.11.0):
• PyTorch Version (e.g., 2.0.0):
• How you installed funasr (pip, source):
• Python version:
• GPU (e.g., V100M32)
• CUDA/cuDNN version (e.g., cuda11.7):
• Docker version (e.g., funasr-runtime-sdk-cpu-0.4.1)
• Any other relevant information:

Additional context