Enable Cors in Gulp/BrowserSync

Question

I've created an Angular project with yeoman's boilerplate code (generator-gulp-angular)

And now in my controller I'm trying to make a http request like this:

$http.get('http://food2fork.com/api/search?key='+key+'&page=1').then(function(response) {
    vm.all = response.data;
});

But I keep getting this error:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://food2fork... (Reason: CORS header 'Access-Control-Allow-Origin' missing)

I did my research and found I needed to add this Access Control to my server, using the middleware property, which I did, but I still keep getting an error here is my server.js file

var path = require('path');
var gulp = require('gulp');
var conf = require('./conf');
var cors = require('cors');

var browserSync = require('browser-sync');
var browserSyncSpa = require('browser-sync-spa');

var util = require('util');

var proxyMiddleware = require('http-proxy-middleware');

function browserSyncInit(baseDir, browser) {
  browser = browser === undefined ? 'default' : browser;

  var routes = null;
  if(baseDir === conf.paths.src || (util.isArray(baseDir) && baseDir.indexOf(conf.paths.src) !== -1)) {
    routes = {
      '/bower_components': 'bower_components'
    };
  }

  //here is where I added the middleware 
  var server = {
    baseDir: baseDir,
    middleware: function (req, res, next) {
        res.setHeader('Access-Control-Allow-Origin', '*');
        next();
      },
    routes: routes
  };      

  browserSync.instance = browserSync.init({
    startPath: '/',
    server: server,
    browser: browser
  });
}

browserSync.use(browserSyncSpa({
  selector: '[ng-app]'// Only needed for angular apps
}));

gulp.task('serve', ['watch'], function () {
  browserSyncInit([path.join(conf.paths.tmp, '/serve'), conf.paths.src]);
});

gulp.task('serve:dist', ['build'], function () {
  browserSyncInit(conf.paths.dist);
});

gulp.task('serve:e2e', ['inject'], function () {
  browserSyncInit([conf.paths.tmp + '/serve', conf.paths.src], []);
});

gulp.task('serve:e2e-dist', ['build'], function () {
  browserSyncInit(conf.paths.dist, []);
});
`

But still the error persists, any help?

Answer 1

You are requiring http-proxy-middleware but not using it ! If You want to resolve Cross Origin for all URL containing /api, first you should forward your Angular requests to your BrowserSync Server

So

$http.get('http://food2fork.com/api/search?key='+key+'&page=1')

Should become

$http.get('/api/search?key='+key+'&page=1')

The BrowserSync will receive the call

In Browser relay the call to the real server in the back with

target :'http://food2fork.com/'

and add Cross Origin headers when the response comes back with

changeOrigin: true,

the full config becomes :

var proxyMiddleware = require('http-proxy-middleware');

const jsonPlaceholderProxy = proxyMiddleware('/api', {
  target: 'http://food2fork.com/api',
  changeOrigin: true,
  logLevel: 'debug'
});

module.exports = function() {
  return {
    server: {
      middleware: [jsonPlaceholderProxy],
      baseDir:  baseDir
    }
  };
};