48 lines
848 B
JavaScript
48 lines
848 B
JavaScript
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var koa = require('..');
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var app = koa();
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// x-response-time
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app.use(function *responseTime(next){
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var start = new Date;
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yield next;
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var ms = new Date - start;
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this.set('X-Response-Time', ms + 'ms');
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});
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// logger
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app.use(function *logger(next){
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var start = new Date;
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yield next;
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var ms = new Date - start;
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console.log('%s %s - %s', this.method, this.url, ms);
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});
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// content-length
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app.use(function *contentLength(next){
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yield next;
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if (!this.body) return;
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this.set('Content-Length', Buffer.byteLength(this.body));
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});
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// custom 404 handler
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app.use(function *notfound(next){
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yield next;
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if (this.body) return;
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this.status = 404;
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this.body = 'Sorry! No luck';
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});
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// response
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app.use(function *response(next){
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yield next;
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if ('/' != this.url) return;
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this.body = 'Hello World';
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});
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app.listen(3000);
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