Nodejs - superagent-http-signature - signature not sent

Question

I'm using this site

var superagent = require('superagent');
var superagentHttpSignature = require('superagent-http-signature');

superagent
    .get('http://project.dev/api/v3/project/tasks/get?task_id=1026')
    .set('Accept', 'application/json')
    .set('x-app-key', 'MY_ACCESS_KEY')
    .set('x-app-trusted', 'key=None')
    .use(superagentHttpSignature({
        headers: ['(request-target)', 'Accept', 'x-app-key', 'x-app-trusted'],
        algorithm: 'hmac-sha256',
        key: 'MY_ACCESS_KEY',
        keyId: 'MY_SECRET_KEY'
    }))
    .end(function(err, res) {
        // console.log(err);
        console.log(res.body);
    });

Node version: v4.2.1

If I inspect the signature header on the server (running PHP by the way, with its own signature verifier, using the same specifications) the signature header is missing.

Anything I am missing? Or are there any alternative node packages with same feature?

My purpose of this is to be able to call the API using other language aside from PHP as proof of concept so I could later use this into AWS Lambda scheduled task.

Answer 1

Your code works and the bug is on your server side. Maybe something between PHP and the code (Apache? nginx?) is filtering the headers.

GET /api/v3/project/tasks/get?task_id=1026 HTTP/1.1
Host: project.dev
Accept-Encoding: gzip, deflate
User-Agent: node-superagent/1.8.0-beta.2
Accept: application/json
x-app-key: MY_ACCESS_KEY
x-app-trusted: key=None
Authorization: Signature keyId="MY_SECRET_KEY",algorithm="hmac-sha256",headers="(request-target) Accept x-app-key x-app-trusted",signature="9ietyIsW8nPH6BqwiePqsDefQpGUFERoV7wEaQ9UUGQ="
Connection: close