HTTP request cannot get the contact photo using Microsoft Graph API - microsoft-graph-api

Question

If I use the library #microsoft/microsoft-graph-client, I can get the contact photo as binary data, convert it to base64 and get the correct photo with the code below:
const request = require('request')
const microsoftGraph = require('#microsoft/microsoft-graph-client');
let token = token-value
let client = getMicrosoftGrapClient(token);
let id = contact-id;
let url = '/me/contacts/' + id + '/photo/$value';
client.api(url).get().then((res) => {
//console.log(res);
var encodedImage = new Buffer(res, 'binary').toString('base64');
console.log("encodedImage>>>>>>>>>>>>>>>>>>>>>>")
console.log (encodedImage);
}).catch((err) => {
console.log(err);
});;
function getMicrosoftGrapClient (token) {
// Create a Graph client
return microsoftGraph.Client.init({
authProvider: (done) => {
// Just return the token
done(null, token);
}});
}
I cannot get the correct contact photo with the HTTP GET. The HTTP
response code is 200 but the body is not the binary data of photo.
Please let me know what the error is. Here is the code:
const request = require('request')
request({
url: "https://graph.microsoft.com/v1.0/me/contacts/{contact_id}/photo/$value",
method: 'GET',
headers: {
'content-type': 'image/jpg',
'Authorization': 'Bearer {token}'
}
}, function (error, response, body){
console.log(error);
var encodedImage = new Buffer(body, 'binary').toString('base64');
console.log(encodedImage);
});

Answer 1

Encoding needs to be explicitly specified as
encoding: null
In that case the body will be of type Buffer, instead of the default (string).
And content-type could be omitted.
Example
request({
url: "https://graph.microsoft.com/v1.0/me/photo/$value",
method: 'GET',
encoding: null,
headers: {
'Authorization': 'Bearer ' + accessToken,
}
}, function (error, response, body) {
var encImage = new Buffer(body, 'binary');
fs.writeFileSync(filePath, encImage );
});