An Issue with Client Connection in Dart Language 一个非常奇怪的bug

[OpenJarvisAI]

Hello，最近使用 flutter的client，连接服务。用的是mqtt5_client这个lib。

服务端报错：

time=2023-11-20T22:05:39.822+08:00 level=INFO msg=unsubscribed hook=my-custom-events-hook client=android_client_iDxic_usrItug3Lj2c5 filters=[]
time=2023-11-20T22:05:39.822+08:00 level=WARN msg="" listener=t1 error=EOF
time=2023-11-20T22:05:42.144+08:00 level=WARN msg="client keepalive is below minimum recommended value and may exhibit connection instability" client="" keepalive=0 recommended=5
time=2023-11-20T22:05:42.144+08:00 level=INFO msg="--> client connected" hook=my-custom-events-hook client=android_client_iDxic_usrItug3Lj2c5
time=2023-11-20T22:05:42.147+08:00 level=WARN msg="client keepalive is below minimum recommended value and may exhibit connection instability" client="" keepalive=0 recommended=5
time=2023-11-20T22:05:42.147+08:00 level=INFO msg="--> client connected" hook=my-custom-events-hook client=android_client_iDxic_usrItug3Lj2c5
time=2023-11-20T22:05:42.147+08:00 level=INFO msg="--> client disconnected" hook=my-custom-events-hook client=android_client_iDxic_usrItug3Lj2c5 expire=true error="read tcp 172.18.171.245:1883->113.89.11.200:20164: use of closed network connection"
time=2023-11-20T22:05:42.147+08:00 level=WARN msg="" listener=t1 error="read tcp 172.18.171.245:1883->113.89.11.200:20164: use of closed network connection"

表现时，一连接上，立马就断开。

现在不知道是客户端还是服务端的问题？ 是什么原因导致的呢？