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#!/usr/bin/env node
/* jshint node: true */
'use strict';
var express = require('express');
var app = express();
// We're manually setting Etag headers.
app.disable('etag');
app.get('/test', function (req, res) {
if (req.query.modified) {
res.setHeader('Last-Modified', (new Date(req.query.modified * 1000)).toUTCString());
}
if (req.query.expires) {
res.setHeader('Expires', (new Date(req.query.expires * 1000)).toUTCString());
}
if (req.query.etag) {
res.setHeader('ETag', req.query.etag);
}
if (req.query.cachecontrol) {
res.setHeader('Cache-Control', req.query.cachecontrol);
}
res.send('Hello World!');
});
var cacheCounter = 0;
app.get('/cache', function(req, res) {
res.setHeader('Cache-Control', 'max-age=30'); // Allow caching for 30 seconds
res.send('Response ' + (++cacheCounter));
});
app.get('/revalidate-same', function(req, res) {
if (req.headers['if-none-match'] == 'snowfall') {
// Second request can be cached for 30 seconds.
res.setHeader('Cache-Control', 'max-age=30');
res.status(304).end();
} else {
// First request must always be revalidated.
res.setHeader('ETag', 'snowfall');
res.setHeader('Cache-Control', 'must-revalidate');
res.status(200).send('Response');
}
});
app.get('/revalidate-modified', function(req, res) {
var jan1 = new Date('jan 1 2015 utc');
if (req.headers['if-modified-since']) {
var modified_since = new Date(req.headers['if-modified-since']);
if (modified_since >= jan1) {
res.setHeader('Cache-Control', 'max-age=30');
res.status(304).end();
return;
}
}
// First request must always be revalidated.
res.setHeader('Last-Modified', jan1.toUTCString());
res.setHeader('Cache-Control', 'must-revalidate');
res.status(200).send('Response');
});
var revalidateEtagCounter = 1;
app.get('/revalidate-etag', function(req, res) {
res.setHeader('ETag', 'response-' + revalidateEtagCounter);
res.setHeader('Cache-Control', 'must-revalidate');
res.status(200).send('Response ' + revalidateEtagCounter);
revalidateEtagCounter++;
});
var temporaryErrorCounter = 0;
app.get('/temporary-error', function(req, res) {
if (temporaryErrorCounter === 0) {
res.status(500).end();
} else {
res.status(200).send('Hello World!');
}
temporaryErrorCounter++;
});
app.get('/load/:number(\\d+)', function(req, res) {
res.send('Request ' + req.params.number);
});
var server = app.listen(3000, function () {
var host = server.address().address;
var port = server.address().port;
console.log('Test server listening at http://%s:%s', host, port);
if (process.argv[2]) {
// Allow the test to continue running.
process.kill(+process.argv[2], 'SIGCONT');
}
});
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