How to connect to websocket for the following setting?

[TomWangTW]

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❓ Question

How to connect to websocket for the following setting?

address: wss://xxx.com:8084

so i seperated the address to

1. host: xxx.com
2. port: 8084

I used below config but it always get error like this:
cause: io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 404 Not Found

but this address is work well with eclipse mqtt client

mqttClient = Mqtt3Client
                     .builder()
                     .serverHost(host) //xxx.com
                     .serverPort(port) //8084
                     .webSocketConfig()
                     .applyWebSocketConfig()
                     .identifier(mqttInfo.mqttId)
                     .simpleAuth()
                     .username(mqttInfo.mqttUsername)
                     .password(mqttInfo.mqttPassword.toByteArray())
                     .applySimpleAuth()
                     .buildAsync()

[skidnight]

@TomWangTW wss is secure web sockets and based on the configuration you posted the endpoint the client will try is not secure (ie. ws://xxx.com:8084). You should just have to add an ssl config to get around this error, like this:

        mClient = Mqtt3Client.builder()
                 .serverHost(host) //xxx.com
                 .serverPort(port) //8084
                 .sslWithDefaultConfig()
                 .webSocketConfig()
                 .applyWebSocketConfig()
                 .identifier(mqttInfo.mqttId)
                .simpleAuth()
                 .username(mqttInfo.mqttUsername)
                 .password(mqttInfo.mqttPassword.toByteArray())
                .applySimpleAuth()
                .buildAsync();

I would strongly suggest adding disconnect/connect listeners as well to get more information about the connection, and if possible consider using MQTT5 since it is more verbose with errors. Hope that helps!