客户端<clientid>发生Socket错误，已断开连接。

Question

我正在运行一个mosquitto代理，并有两个节点进行交互。一个是Android应用程序，另一个是Node应用程序。在本地一切正常，但当我将其托管在具有不同IP地址的服务器上时，代理会断开带有"Socket error..."错误消息的Android连接。通信使用WebSocket。

这不是防火墙问题，已编辑规则以包括端口。

Translated:

1563531509: New client connected from 115.110.139.126 as mqttjs_8eceda19 (p2, c1, k60).
1563531509: No will message specified.
1563531509: Sending CONNACK to mqttjs_8eceda19 (0, 0)
1563531522: Received PUBLISH from mqttjs_8eceda19 (d0, q2, r0, m56220, 'navigation', ... (66 bytes))
1563531522: Sending PUBREC to mqttjs_8eceda19 (m56220, rc0)
1563531522: Received PUBREL from mqttjs_8eceda19 (Mid: 56220)
1563531522: Sending PUBLISH to RepositoryClient (d0, q1, r0, m1, 'navigation', ... (66 bytes))
1563531522: Sending PUBCOMP to mqttjs_8eceda19 (m56220)
1563531522: New client connected from 115.110.139.126 as mqttjs_98f933df (p2, c1, k60).
1563531522: No will message specified.
1563531522: Sending CONNACK to mqttjs_98f933df (0, 0)
1563531522: Socket error on client RepositoryClient, disconnecting.
1563531522: Received SUBSCRIBE from mqttjs_98f933df
1563531522:     test (QoS 2)
1563531522: mqttjs_98f933df 2 test
1563531522: Sending SUBACK to mqttjs_98f933df
1563531524: New client connected from 115.110.139.126 as RepositoryClient (p2, c0, k6464).
1563531524: No will message specified.
1563531524: Sending CONNACK to RepositoryClient (1, 0)
1563531524: Sending PUBLISH to RepositoryClient (d1, q1, r0, m1, 'navigation', ... (66 bytes))
1563531524: Socket error on client RepositoryClient, disconnecting.

- sushmitharajendran

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RepositoryClient连接和断开之间需要多长时间？在这段时间内，它是否实际接收到任何消息？另外，保持活动的周期设置为多少？ - undefined

Android客户端在节点客户端发布消息时立即断开连接，而且始终只有Android客户端会断开连接。两个客户端的保持活动期为600秒。 - undefined

Answer 1

显然，在订阅期间，客户端抛出了异常，并且客户端正在尝试使用相同的ID重新连接。因此出现了套接字错误。修复异常的原因解决了该问题。

- sushmitharajendran