help to configure a proxy please

  • Hi
    Im trying to configure a proxy in quasar 0.15 and i have not achivied yet, my devServer config is like this:

    devServer: {

      port: 8080,
      open: true,
      openPage: '/pmt/',
          target: 'http://localhost:80/', 
          secure: false,
          logLevel: 'debug',
          changeOrigin: true ,
          headers: {
            'Origin': 'http://localhost:80/'
          bypass: function(req, res, proxyOptions) {
          onProxyReq: function (proxyReq, req, res) {
              proxyReq.setHeader('origin', 'http://localhost:80/');
          onError(err, req, res) {
          onProxyRes(proxyRes, req, res) {
          pathRewrite: {
            '^/pmt/': ''


    I have noticed that the proxy somehow does not match my patterns, because i subscribed to onProxyReq function and just put a console.log and only Works with ‘/pmt’ pattern; i have used with this patterns:


    And so on…
    The requested service uses axios like this:

    const ruta = ‘index.php/LoginController/validarCredenciales’,{}).then(function (response) {
    if (response !== undefined && response !== null){
    if(typeof payload.callback === “function”){,response);
    .catch((error) => {
    return false;


    the service result always send me back a cors error:

    Failed to load http://localhost/pmt/index.php/LoginController/validarCredenciales: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:8080’ is therefore not allowed access.

    i configured a proxy with quasar 0.14 but now i dont know what am i doing wrong, if anyone can give me a clue please…

    thanks in advance

  • var app = express();
    app.use(function(req, res, next) {
    res.header(“Access-Control-Allow-Origin”, “*”)
    res.header(“Access-Control-Allow-Headers”, “Origin, X-Requested-With, Content-Type, Accept, Authorization”)
    res.header(‘Access-Control-Allow-Methods’, ‘GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS’)
    in express this is how we set up our access control headers, I don’t know the specifics for your web server but if you add these headers to both the server that is acting as the proxy and the server which is at localhost:80 it should fix the error.

  • thanks, i appreciate your comment…

    In my server code i can put the headers and the requests are accepted, indeed i installed a chrome plugin for that and it works too, but i want to make it work just configuring devServe’ proxy because i had a problem with php sessions; when the server validate users credentials, it creates session variables (first i used codeigniter session library, then i changed to php normal session) but when i ask the next request, sessions did not exist (like if it were destroyed) and i thougth that maybe it was because of i haven’t configure devserver proxy like i did in quasar 0.14 when it worked (but now i cant get the proxy runs)…

    I have read that maybe i must use jwt (json web tokens), but also i read that is ok to use server’s sessions… so im confused

  • i have resolved after a thousand years…
    i was missunderstanding how the proxy worked; for those who has the same problem:

    i was setting axios.defaults.baseURL to something like this: ‘http://localhost/pmt/’ (it might not be your case); in my components the request services pointed to an url like this: ‘index.php/controller/method’ and my proxy setting was like this:

    ‘/pmt/index.php/’: {
    target: ‘…’


    what i did to resolved:

    1. i changed axios.defaults.baseURL to ‘index.php’ (im using codeigniter framework)
    2. in my components services urls changed to something like ‘controller/method’
    3. changed my proxy to:

    target: ‘http://localhost:80/pmt/’,
    secure: false,
    logLevel: ‘debug’,
    changeOrigin: true,

          headers: {
            'Origin': 'http://localhost:80/'


    so when my components services ask something like controller/method, it joins to axios.defaults.baseURL in this case result in: index.php/controller/method, which the proxy match and using target property the final url is set to something like this:


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