Updated to help when proxying locations that require credentials.

README.md

@@ -36,6 +36,19 @@ http://localhost:8010/proxy/movies/list
 
 End result will be a request to `https://www.yourdomain.ie/movies/list` without the CORS issues!
 
+If you are proxying a location that requires credentials you'll find that you cannot allow origin * and send credentials.
+To resolve this you can pass the specific origin you want to allow:
+
+```
+lcp --proxyUrl https://www.yourdomain.ie --allowedOrigin http://localhost:3000
+```
+
+Also when dealing with passing credentials, you may need to enable sending the include credentials header.
+```
+lcp --proxyUrl https://www.yourdomain.ie --allowedOrigin http://localhost:3000 --includeCredentials
+```
+
+
 Alternatively you can install the package locally and add a script to your project:
 
 ```json
@@ -51,3 +64,5 @@ Alternatively you can install the package locally and add a script to your proje
 | --proxyUrl     | https://www.google.ie |         |
 | --proxyPartial | foo                   |   proxy |
 | --port         | 8010                  |    8010 |
+| --allowedOrigin | http://localhost:3000 |       * |
+| --includeCredentials | true            |    true |

bin/lcp.js

@@ -10,15 +10,25 @@ var optionDefinitions = [
     type: String,
     defaultValue: '/proxy'
   },
-  { name: 'proxyUrl', type: String }
+  { name: 'proxyUrl', type: String },
+  {
+    name: 'allowedOrigin',
+    type: String,
+    defaultValue: '*'
+  },
+  {
+    name: 'includeCredentials',
+    type: Boolean,
+    defaultValue: false
+  }
 ];
 
 try {
   var options = commandLineArgs(optionDefinitions);
   if (!options.proxyUrl) {
     throw new Error('--proxyUrl is required');
   }
-  lcp.startProxy(options.port, options.proxyUrl, options.proxyPartial);
+  lcp.startProxy(options.port, options.proxyUrl, options.proxyPartial, options.allowedOrigin, options.includeCredentials);
 } catch (error) {
   console.error(error);
 }

lib/index.js

@@ -4,8 +4,15 @@ var cors = require('cors');
 var chalk = require('chalk');
 var proxy = express();
 
-var startProxy = function(port, proxyUrl, proxyPartial) {
-  proxy.use(cors());
+
+var startProxy = function(port, proxyUrl, proxyPartial, allowedOrigin, includeCredentials) {
+
+  var corsOptions = {
+    origin: allowedOrigin,
+    credentials: includeCredentials
+  }
+
+  proxy.use(cors(corsOptions));
   proxy.options('*', cors());
 
   // remove trailing slash
@@ -26,7 +33,9 @@ var startProxy = function(port, proxyUrl, proxyPartial) {
   console.log(chalk.bgGreen.black.bold.underline('\n Proxy Active \n'));
   console.log(chalk.blue('Proxy Url: ' + chalk.green(cleanProxyUrl)));
   console.log(chalk.blue('Proxy Partial: ' + chalk.green(cleanProxyPartial)));
-  console.log(chalk.blue('PORT: ' + chalk.green(port) + '\n'));
+  console.log(chalk.blue('PORT: ' + chalk.green(port)));
+  console.log(chalk.blue('Allowed Origin: ' + chalk.green(allowedOrigin)));
+  console.log(chalk.blue('Include Credentials: ' + chalk.green(includeCredentials) + '\n'));
   console.log(
     chalk.cyan(
       'To start using the proxy simply replace the proxied part of your url with: ' +

package.json

@@ -14,7 +14,13 @@
     "type": "git",
     "url": "git+https://github.com/garmeeh/local-cors-proxy.git"
   },
-  "keywords": ["cors", "proxy", "simple", "node", "express"],
+  "keywords": [
+    "cors",
+    "proxy",
+    "simple",
+    "node",
+    "express"
+  ],
   "bugs": {
     "url": "https://github.com/garmeeh/local-cors-proxy/issues"
   },