到机器人的POST时出现502（错误网关）

Question

我正在仅使用HTTP-GET和纯JS构建非常简单的交互式BOT。 有时我需要BOT进行时间密集的处理，并且需要40秒钟才能回复。 在这种情况下，我得到以下关于POST的响应。

1. 那么，这种回报是期望的吗？

2. 我要进行哪些更改才能收到有意义的答复，而不将这种情况视为真正的错误？

3. 还有其他建议可以解决这种情况吗？

谢谢！

502 (Bad Gateway)
{
  "error": {
    "code": "ServiceError",
    "message": "Failed to send activity: bot returned an error"
  }
}

发布请求

//send token and message
function sendMessage() {
  var xhttp = new XMLHttpRequest();
  xhttp.onreadystatechange = function() {


    if (this.readyState == 4 && this.status == 200) {

      var responseObj = JSON.parse(this.responseText);
      convMsgID =responseObj.id;
      latestUserMessage = document.getElementById('textToSend').value;
      showUserMessage();
      document.getElementById('textToSend').value = "";
      getReply();
    }
    else{
      console.log("error :"+ this.responseText);
    }

  };
  var postUrl = "https://directline.botframework.com/v3/directline/conversations/" + convID + "/activities";
  xhttp.open("POST", postUrl, true);

  var authToken="Bearer " + convToken;
  xhttp.setRequestHeader("Authorization", authToken);
  xhttp.setRequestHeader("Content-Type", "application/json");



  var messageBody = '{"type": "message","from": {"id": "user1"},"text": "';
      messageBody =  messageBody + document.getElementById("textToSend").value;
      messageBody = messageBody + '"}';

  console.log("messageBody"+ messageBody);
  xhttp.send(messageBody);
  document.getElementById("send-icon").src="./send.png";

}

GET请求

    function getReply() {
  var xhttp = new XMLHttpRequest();
  xhttp.onreadystatechange = function() {



    if (this.readyState == 4 && this.status == 200) {

      var responseObj = JSON.parse(this.responseText);
      console.log("length" + (responseObj.activities.length -1));
      console.log("response :"+ responseObj.activities[responseObj.activities.length -1].text);
      latestBotMessage = responseObj.activities[responseObj.activities.length - 1].text


      showBotMessage();
    }
    else{
        console.log("response"+ this.responseText);
    }

  };
  var postUrl = "https://directline.botframework.com/v3/directline/conversations/" + convID + "/activities";

  xhttp.open("GET", postUrl, true);

  var authToken="Bearer " + convToken;
  xhttp.setRequestHeader("Authorization", authToken);
 xhttp.send();

}

Answer 1

1）是，如果漫游器回复时间超过15秒，则预期为502

2＆3）在开始长期运行的过程之前对用户做出响应。 让某些工作人员执行长时间的操作（Azure功能？），完成后，将结果作为主动消息发送给用户： https : //docs.microsoft.com/zh-cn/bot-framework/nodejs/bot- builder-nodejs-proactive-messages