koa2-simple-proxy

> Note: that koa2-simple-proxy supports for koa2

Usage

> Note: if you use [/api and /api2] as prefixes, the /api2 should be in front of the /api

``bash

const Koa = require('koa');
const proxy = require('koa2-simple-proxy');
const app = new Koa();

// x-response-time
app.use(async(ctx, next) => {
const start = Date.now();
await next();
const ms = Date.now() - start;
ctx.set('X-Response-Time', ${ms}ms);
});

// logger
app.use(async(ctx, next) => {
const start = Date.now();
await next();
const ms = Date.now() - start;
console.log(${ctx.method} ${ctx.url} - ${ms});
});

// proxy
app.use(proxy('/rest', 'http://192.168.1.240/api2'));
app.use(proxy(['/api2', '/api'], 'http://192.168.1.240/api2'));
app.use(proxy('/api3', 'http://192.168.1.240/api2', {
events: {
error(err, req, res) {
res.writeHead(500, err.message, {
'Content-Type': 'application/json'
});
res.end(JSON.stringify(Object.assign({}, err, {
message: err.message, // 有时候message字段不能被输出
url: req.url
})));
}
}
}));

// response
app.use(async ctx => {
ctx.body = 'Hello World';
});

app.listen(9527, () => {
console.log(Listening on 9527);
});

``