Mosquitto Broker Bridge 配置 - 不可接受的协议版本

Question

我正在使用 Paho MQTT 客户端与本地客户端一起做一个小型 IoT 项目，将 mqtt 数据发送到本地 mosquitto 代理（充当桥梁），然后发送到我的远程代理 (SAP IoT Cloud)。

从客户端到远程代理的数据流（使用 TLS）工作正常，现在我正在努力放置和配置相应的桥梁。

由于我必须对 mqtt 消息 (QoS 1) 使用 TLS，因此创建了端口 8883 的第二个侦听器。还提供了用于远程代理身份验证的相同 CA 文件，作为用于发送的客户端。一旦我使用下面规定的配置启动我的代理（我还没有启动我的本地客户端），我将收到关于不可接受的协议版本的错误消息（参见下面的日志文件）。所以无法建立到我的远程代理的桥接，但为什么呢？

我以前遇到过同样的问题，然后我发现我使用的是旧的 mosquitto 版本 (1.4.10) 并相应地更新了它。但对于 v1.6.7，它也不起作用。

非常感谢任何提示。一些信息是去个性化的（比如在远程代理中用作 clientId 的连接名称，端点地址）

一些必要的信息：

Mosquitto 经纪人版本 1.6.7
OS：Debian 扩展
我经纪人的配置

connection raspberryPiZero
address xxxxxxxx.eu10.cp.iot.sap:8883
topic # both 1
log_type all
listener 8883
bridge_cafile /etc/mosquitto/certs/CAcert.pem

日志文件 mosquitto

1574754457: mosquitto version 1.6.7 starting
1574754457: Config loaded from /etc/mosquitto/mosquitto.conf.
1574754457: Opening ipv4 listen socket on port 1883.
1574754457: Opening ipv6 listen socket on port 1883.
1574754715: mosquitto version 1.6.7 terminating
1574754715: Saving in-memory database to /var/lib/mosquitto/mosquitto.db.
1574754721: mosquitto version 1.6.7 starting
1574754721: Config loaded from /etc/mosquitto/mosquitto.conf.
1574754721: Opening ipv4 listen socket on port 8883.
1574754721: Opening ipv6 listen socket on port 8883.
1574754721: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754721: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754726: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754726: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754741: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754741: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754741: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754741: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754742: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754742: Connection Refused: unacceptable protocol version
1574754742: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754747: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754747: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754747: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754747: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754747: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754747: Connection Refused: broker unavailable
1574754747: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754775: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754775: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754776: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754776: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754776: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754776: Connection Refused: broker unavailable
1574754776: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754781: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754781: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754782: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754782: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754782: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754782: Connection Refused: broker unavailable
1574754782: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754787: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754787: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754788: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754788: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754788: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754788: Connection Refused: broker unavailable
1574754788: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754793: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754793: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754794: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754794: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754794: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754794: Connection Refused: broker unavailable
1574754794: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754799: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754799: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754800: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754800: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754800: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754800: Connection Refused: broker unavailable
1574754800: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754805: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754805: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754806: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754806: Bridge raspberrypi.raspberryPiZero sending CONNECT
1574754806: Received CONNACK on connection local.raspberrypi.raspberryPiZero.
1574754806: Connection Refused: broker unavailable
1574754806: Socket error on client local.raspberrypi.raspberryPiZero, disconnecting.
1574754811: Bridge local.raspberrypi.raspberryPiZero doing local SUBSCRIBE on topic #
1574754811: Connecting bridge (step 1) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754812: Connecting bridge (step 2) raspberryPiZero (xxxxxxxx.eu10.cp.iot.sap:8883)
1574754812: mosquitto version 1.6.7 terminating
1574754812: Saving in-memory database to /var/lib/mosquitto/mosquitto.db.

Answer 1

默认情况下，mosquitto 尝试使用 MQTT 3.1 设置网桥

您可以通过将 bridge_protocol_version 选项添加到它接受 mqttv31 和 mqttv311

的网桥配置来更改此设置

bridge_protocol_version mqttv311

尝试使用 3.11

同时禁用 mosquitto 专用网桥扩展：

try_private false

Mosquitto Broker Bridge 配置 - 不可接受的协议版本

Mosquitto Broker Bridge Configuration - unacceptable protocol version

sap

bridge

mqtt

mosquitto

paho