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http-server.js
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http-server.js
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'use strict';
var fs = require('fs'),
union = require('union'),
ecstatic = require('ecstatic'),
httpProxy = require('http-proxy'),
corser = require('corser');
//
// Remark: backwards compatibility for previous
// case convention of HTTP
//
exports.HttpServer = exports.HTTPServer = HttpServer;
/**
* Returns a new instance of HttpServer with the
* specified `options`.
*/
exports.createServer = function (options) {
return new HttpServer(options);
};
/**
* Constructor function for the HttpServer object
* which is responsible for serving static files along
* with other HTTP-related features.
*/
function HttpServer(options) {
options = options || {};
if (options.root) {
this.root = options.root;
}
else {
try {
fs.lstatSync('./public');
this.root = './public';
}
catch (err) {
this.root = './';
}
}
this.headers = options.headers || {};
this.cache = options.cache === undefined ? 3600 : options.cache; // in seconds.
this.showDir = options.showDir !== 'false';
this.autoIndex = options.autoIndex !== 'false';
this.showDotfiles = options.showDotfiles;
this.gzip = options.gzip === true;
this.contentType = options.contentType || 'application/octet-stream';
if (options.ext) {
this.ext = options.ext === true
? 'html'
: options.ext;
}
var before = options.before ? options.before.slice() : [];
before.push(function (req, res) {
if (options.logFn) {
options.logFn(req, res);
}
res.emit('next');
});
if (options.cors) {
this.headers['Access-Control-Allow-Origin'] = '*';
this.headers['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Range';
if (options.corsHeaders) {
options.corsHeaders.split(/\s*,\s*/)
.forEach(function (h) { this.headers['Access-Control-Allow-Headers'] += ', ' + h; }, this);
}
before.push(corser.create(options.corsHeaders ? {
requestHeaders: this.headers['Access-Control-Allow-Headers'].split(/\s*,\s*/)
} : null));
}
if (options.robots) {
before.push(function (req, res) {
if (req.url === '/robots.txt') {
res.setHeader('Content-Type', 'text/plain');
var robots = options.robots === true
? 'User-agent: *\nDisallow: /'
: options.robots.replace(/\\n/, '\n');
return res.end(robots);
}
res.emit('next');
});
}
before.push(ecstatic({
root: this.root,
cache: this.cache,
showDir: this.showDir,
showDotfiles: this.showDotfiles,
autoIndex: this.autoIndex,
defaultExt: this.ext,
gzip: this.gzip,
contentType: this.contentType,
handleError: typeof options.proxy !== 'string'
}));
if (typeof options.proxy === 'string') {
var httpProxyOptions = options.httpProxyOptions || {};
var proxy = httpProxy.createProxyServer(httpProxyOptions);
before.push(function (req, res) {
proxy.web(req, res, {
target: options.proxy,
changeOrigin: true
});
});
}
var serverOptions = {
before: before,
headers: this.headers,
onError: function (err, req, res) {
if (options.logFn) {
options.logFn(req, res, err);
}
res.end();
}
};
if (options.https) {
serverOptions.https = options.https;
}
this.server = union.createServer(serverOptions);
}
HttpServer.prototype.listen = function () {
this.server.listen.apply(this.server, arguments);
};
HttpServer.prototype.close = function () {
return this.server.close();
};