从API w/Express http-proxy存储令牌

Question

我正在设置一个通用的React应用程序,并以此项目为基础.我成功地将请求(使用http-proxy)代理到我的Laravel后端.但是,我是Nodejs的新手,我不知道如何将JWT从代理服务器安全地存储到客户端.

我最初的想法是将令牌存储到localStorage,但问题是快递服务器将无法访问它.所以我的下一个猜测是将它存储为cookie,但我不确定如何将其存储在客户端上或将其作为所有传出请求的标头包含(另外,我可能需要某种csrf中间件).

那么我如何操纵我的api服务器的响应将令牌放入客户端中设置的cookie中,然后将其用作所有api请求的承载令牌？

// server.js
const targetUrl = 'http://' + config.apiHost + ':' + config.apiPort;
const app = new Express();
const server = new http.Server(app);

const proxy = httpProxy.createProxyServer({
  target: targetUrl,
  changeOrigin: true
});

// Proxy to Auth endpoint
app.use('/auth', (req, res) => {
  // on a successful login, i want to store the token as a cookie
  proxy.web(req, res, {target: targetUrl});
});

// Proxy to api endpoint
app.use('/api', (req, res) => {
  // use the token in the cookie, and add it as a authorization header in the response
  proxy.web(req, res, {target: targetUrl});
});

Answer 1

鉴于 Laravel 中 auth 端点的响应如下所示：

{ 
    "token" : "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ"
}

这段代码将执行您想要的操作：

// server.js
const targetUrl = 'http://' + config.apiHost + ':' + config.apiPort;
const Express = require('express');
const http = require('http');
const httpProxy = require('http-proxy');
const app = new Express();
const server = new http.Server(app);
const Cookies = require( "cookies" )

const proxy = httpProxy.createProxyServer({
  target: targetUrl,
  changeOrigin: true
});

// Proxy to Auth endpoint
app.use('/auth', (req, res) => {
  // on a successful login, i want to store the token as a cookie
  // this is done in the proxyRes
  proxy.web(req, res, {target: targetUrl});
});

// Proxy to api endpoint
app.use('/api', (req, res) => {
  // use the token in the cookie, and add it as a authorization header in the response
  var cookies = new Cookies( req, res )
  req.headers.authorization = "JWT " + cookies.get('jwt-token');
  proxy.web(req, res, {target: targetUrl});
});

proxy.on('proxyRes', function(proxyRes, req, res) {
    if (req.originalUrl === '/auth') {
        var cookies = new Cookies( req, res )
        var body = '';
        var _write = res.write;
        var _end = res.end;
        var _writeHead = res.writeHead;
        var sendHeader = false;

        res.writeHead = function () {
            if (sendHeader) {
                _writeHead.apply( this, arguments );
            }
        }
        res.write = function (data) {
            body += data;
        }
        res.end = function () {
            sendHeader = true;
            var parsed = JSON.parse(body);
            cookies.set('jwt-token', parsed.token);
            _write.apply(this, [ body ]);
            _end.apply(this, arguments);
        }

    }
});