nodejs - How to promisify http.request? reject got called two times

Question

I\'m trying to wrap http.request into Promise:

 new Promise(function(resolve, reject) {
    var req = http.request({
        host:          


        

Answer 1

There are other ways as well but here you can find a simple way to make http.request as a promise or async/await type.

Here is a working sample code:

var http = require('http');

function requestAsync(name) {

    return new Promise((resolve, reject) => {
        var post_options = {
            host: 'restcountries.eu',
            port: '80',
            path: `/rest/v2/name/${name}`,
            method: 'GET',
            headers: {
                'Content-Type': 'application/json'
            }
        };
        let post_req = http.request(post_options, (res) => {
            res.setEncoding('utf8');
            res.on('data', (chunk) => {
                resolve(chunk);
            });
            res.on("error", (err) => {
                reject(err);
            });
        });
        post_req.write('test');
        post_req.end();
    });
}

//Calling request function
//:1- as promise
requestAsync("india").then(countryDetails => {
    console.log(countryDetails);
}).catch((err) => {
    console.log(err);  
}); 

//:2- as await
let countryDetails = await requestAsync("india");