How to make remote REST call inside Node.js? any CURL?
I use node-fetch because it uses the familiar (if you are a web developer) fetch() API. fetch() is the new way to make arbitrary HTTP requests from the browser.
Yes I know this is a node js question, but don't we want to reduce the number of API's developers have to memorize and understand, and improve re-useability of our javascript code? Fetch is a standard so how about we converge on that?
The other nice thing about fetch()
is that it returns a javascript Promise, so you can write async code like this:
let fetch = require('node-fetch');
fetch('http://localhost', {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: '{}'
}).then(response => {
return response.json();
}).catch(err => {console.log(err);});
Fetch superseeds XMLHTTPRequest. Here's some more info.
Look at http.request
var options = {
host: url,
port: 80,
path: '/resource?id=foo&bar=baz',
method: 'POST'
};
http.request(options, function(res) {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
res.setEncoding('utf8');
res.on('data', function (chunk) {
console.log('BODY: ' + chunk);
});
}).end();
Look at http://isolasoftware.it/2012/05/28/call-rest-api-with-node-js/
var https = require('https');
/**
* HOW TO Make an HTTP Call - GET
*/
// options for GET
var optionsget = {
host : 'graph.facebook.com', // here only the domain name
// (no http/https !)
port : 443,
path : '/youscada', // the rest of the url with parameters if needed
method : 'GET' // do GET
};
console.info('Options prepared:');
console.info(optionsget);
console.info('Do the GET call');
// do the GET request
var reqGet = https.request(optionsget, function(res) {
console.log("statusCode: ", res.statusCode);
// uncomment it for header details
// console.log("headers: ", res.headers);
res.on('data', function(d) {
console.info('GET result:\n');
process.stdout.write(d);
console.info('\n\nCall completed');
});
});
reqGet.end();
reqGet.on('error', function(e) {
console.error(e);
});
/**
* HOW TO Make an HTTP Call - POST
*/
// do a POST request
// create the JSON object
jsonObject = JSON.stringify({
"message" : "The web of things is approaching, let do some tests to be ready!",
"name" : "Test message posted with node.js",
"caption" : "Some tests with node.js",
"link" : "http://www.youscada.com",
"description" : "this is a description",
"picture" : "http://youscada.com/wp-content/uploads/2012/05/logo2.png",
"actions" : [ {
"name" : "youSCADA",
"link" : "http://www.youscada.com"
} ]
});
// prepare the header
var postheaders = {
'Content-Type' : 'application/json',
'Content-Length' : Buffer.byteLength(jsonObject, 'utf8')
};
// the post options
var optionspost = {
host : 'graph.facebook.com',
port : 443,
path : '/youscada/feed?access_token=your_api_key',
method : 'POST',
headers : postheaders
};
console.info('Options prepared:');
console.info(optionspost);
console.info('Do the POST call');
// do the POST call
var reqPost = https.request(optionspost, function(res) {
console.log("statusCode: ", res.statusCode);
// uncomment it for header details
// console.log("headers: ", res.headers);
res.on('data', function(d) {
console.info('POST result:\n');
process.stdout.write(d);
console.info('\n\nPOST completed');
});
});
// write the json data
reqPost.write(jsonObject);
reqPost.end();
reqPost.on('error', function(e) {
console.error(e);
});
/**
* Get Message - GET
*/
// options for GET
var optionsgetmsg = {
host : 'graph.facebook.com', // here only the domain name
// (no http/https !)
port : 443,
path : '/youscada/feed?access_token=you_api_key', // the rest of the url with parameters if needed
method : 'GET' // do GET
};
console.info('Options prepared:');
console.info(optionsgetmsg);
console.info('Do the GET call');
// do the GET request
var reqGet = https.request(optionsgetmsg, function(res) {
console.log("statusCode: ", res.statusCode);
// uncomment it for header details
// console.log("headers: ", res.headers);
res.on('data', function(d) {
console.info('GET result after POST:\n');
process.stdout.write(d);
console.info('\n\nCall completed');
});
});
reqGet.end();
reqGet.on('error', function(e) {
console.error(e);
});
How about using Request — Simplified HTTP client.
Edit February 2020: Request has been deprecated so you probably shouldn't use it any more.
Here's a GET:
var request = require('request');
request('http://www.google.com', function (error, response, body) {
if (!error && response.statusCode === 200) {
console.log(body) // Print the google web page.
}
})
OP also wanted a POST:
request.post('http://service.com/upload', {form:{key:'value'}})