失败：在WebSocket握手期间出错：使用ng2-mqtt

Question

使用mqtt连接到ng2-mqtt (paho)时，出现以下错误。

  

mqttws31.js：979 WebSocket连接到   'ws：//bfwirisnandi.in：1883 / mqtt'失败：WebSocket期间出错   握手：net :: ERR_CONNECTION_RESET

Answer 1

对不起，这是我的代码

this._client = new Paho.MQTT.Client("abcd.in", 8000,"efrfrefrefer");
this._client.onConnectionLost = onConnectionLost;
this._client.onMessageArrived = onMessageArrived;
var options = {
useSSL: false,
userName: "onlysub",
password: "OsubALL",
onSuccess:onConnect,
onFailure:doFail
}
this._client.connect(options);
function onConnect() {
console.log("onConnect");
this._client.subscribe("/dgvf/v1c");
}
function doFail(e){
console.log(e);
}
function onConnectionLost(responseObject) {
if (responseObject.errorCode !== 0) {
console.log("onConnectionLost:"+responseObject.errorMessage);
}
}
function onMessageArrived(message) {
console.log("onMessageArrived:"+message.payloadString);
}