62 lines
1.0 KiB
JavaScript
62 lines
1.0 KiB
JavaScript
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var zlib = require('zlib');
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var koa = require('..');
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var fs = require('fs');
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var app = koa();
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// ignore favicons
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app.use(function *(next){
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if ('/favicon.ico' == this.path) this.status = 404;
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yield next;
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});
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// logger
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app.use(function *(next){
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console.log('%s %s', this.method, this.url);
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yield next;
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});
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// stream a file
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app.use(function *(next){
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var path = __dirname + this.path;
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var exists = yield isFile(path);
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if (!exists) return yield next;
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this.body = fs.createReadStream(path);
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yield next;
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});
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// gzip the response
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app.use(function *(next){
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var body = this.body;
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if (!body || !body.readable) return yield next;
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var gzip = zlib.createGzip();
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this.set('Content-Encoding', 'gzip');
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this.body = gzip;
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body.pipe(gzip);
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yield next;
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});
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app.listen(3000);
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/**
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* Stat regular file helper.
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*/
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function isFile(file) {
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return function(done){
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fs.stat(file, function(err, stat){
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if (err && 'ENOENT' == err.code) return done(null, false);
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if (err) return done(err);
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done(null, stat.isFile());
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});
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}
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} |