HTTP发布请求未在AWS Lambda中通过

Question

I am trying to add an item to my Todoist project through an Alexa skill in AWS Lambda. I am very new to all of these technologies so forgive me if the fix is incredibly obvious. When I ask Alexa to invoke my addZipcode skill, it fails. This is what I have (excluding some stuff that is in all Alexa Lambda functions):

Alexa stuff
...
const handlers = {
'LaunchRequest': function() {
    this.emit('AMAZON.HelpIntent');
},
'addZipcode': function() {

    const newZip = this.event.request.intent.slots.zipcode.value;
    const speechOutput = newZip;

    var http = require("https");
    function postZip(newZip) {
        var options = {
            "method": "POST",
            "hostname": [
                "beta",
                "todoist",
                "com"
            ],
            "path": [
                "API",
                "v8",
                "tasks"
            ],
            "headers": {
                "Content-Type": "application/json",
                "Authorization": "Bearer " + token
            }
        };

        var req = http.request(options, function(res) {
            var chunks = [];
            res.on("data", function(chunk) {
                chunks.push(chunk);
            });

            res.on("end", function() {
                var body = Buffer.concat(chunks);
                console.log(body.toString());
            });
        });
        req.write(JSON.stringify({ content: newZip, project_id: XXXXXXXXXX }));
        req.end();
    }

    postZip(newZip);

    this.response.cardRenderer(SKILL_NAME, newZip);
    this.response.speak(speechOutput);
    this.emit(':responseReady');

},
.... cont

I get the resulting error when I try to run the skill with Alexa:

Response:
{
  "errorMessage": "hostHeader.replace is not a function",
  "errorType": "TypeError",
  "stackTrace": [
    "Agent.addRequest (_http_agent.js:130:39)",
    "new ClientRequest (_http_client.js:159:16)",
    "Object.exports.request (http.js:31:10)",
    "Object.exports.request (https.js:199:15)",
    "postZip (/var/task/index.js:72:28)",
    "Object.addZipcode (/var/task/index.js:88:9)",
    "emitNone (events.js:86:13)",
    "AlexaRequestEmitter.emit (events.js:185:7)",
    "AlexaRequestEmitter.EmitEvent (/var/task/node_modules/alexa-sdk/lib/alexa.js:216:10)",
    "AlexaRequestEmitter.ValidateRequest (/var/task/node_modules/alexa-sdk/lib/alexa.js:181:23)"
  ]
}

I tried searching for more information about hostHeader.replace or even just hostHeader but to no avail. When I surround my postZip function with

exports.handler = function(event, context, callback) {} 

the skill actually works, but the Post request does not go through (as in, the new zipcode is not added as a new task on my Todoist). I'm pretty sure the Post request code itself is correct because I ran it through Postman and the zipcode was added.

Please help me understand why it doesn't work.

Answer 1

It's hard to tell what causes that error. But the node docs say, that hostname as well as path are supposed to be nothing but strings and not arrays as it's the case in your code.

So what I'd do first is to change your code to this:

var options = {
        "method": "POST",
        "hostname": "beta.todoist.com",
        "path": "/API/v8/tasks",
        "headers": {
            "Content-Type": "application/json",
            "Authorization": "Bearer " + token
        }