Node.js
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A simple express app with the following dependencies:
"dependencies": {
"express": "^4.13.4",
"nodedump": "*",
"dateformat": "*"
}To see an example Node.js project go to:
Example app
var express = require('express');
var crypto = require("crypto");
var https = require('https');
var qs = require('querystring');
var dateFormat = require('dateformat');
var nodedump = require('nodedump').dump;
var app = express();
var host = 'www.lingkapis.com';
var apikey = '[yourkey]';
var secret = '[yoursecret]';
app.get('/', function (req, res) {
var d = new Date();
var requestPath = '/v1/@self/ps/studentauthentications';
var requestMethod = "GET";
var formattedDate = dateFormat(d,"GMT:ddd, dd mmm yyyy HH:MM:ss Z");
var message = "date: "+ formattedDate + "\n(request-target): " + requestMethod.toLowerCase() + " " + requestPath;
var hmacer = crypto.createHmac('sha1', secret);
hmacer.write(message);
hmacer.setEncoding('base64');
hmacer.end();
var sig = hmacer.read();
// options for API request
var options = {
host: host,
path: requestPath,
method: requestMethod,
headers: {
'Date': formattedDate,
'Authorization': 'Signature keyId="'+apikey+'",algorithm="hmac-sha1",headers="date (request-target)",signature="'+qs.escape(sig)+'"'
}
}
// callback for API Call
callback = function(response) {
var body = ''
response.on('data', function (chunk) {
body += chunk;
});
response.on('end', function () {
try {
var parsed = JSON.parse(body);
//capture dump
var output = nodedump(parsed);
// write response to the browser
res.send(
'<html>'
+ '<head>'
+ '<title>Lingk API Example</title>'
+ '</head>'
+'<body>'
+output
+'</body>'
+'</html>'
);
} catch (err) {
res.send('Unable to parse response as JSON', err.stack);
}
}).on('error', function(err) {
// handle errors with the request itself
res.send('Error with the request:', err.message);
});
}
// API request
var httpreq = https.request(options, callback);
httpreq.end();
console.log("date " + formattedDate);
console.log("message " + message);
console.log("secret " + secret);
console.log("signature " + sig);
});
app.listen(3000, function () {
console.log('Example app listening on port 3000!');
});Example output
