fix bug when use proxy-express as a reverse proxy server

README.md

@@ -77,12 +77,27 @@ Forward all requests to the host specified. Only requests made with the prefix i
   // [METHOD] /foo/users => proxied to [METHOD] //www.foo.com/users
 ```
 
+## Proxy To Virtual host Website 
+
+Virtual host refers to HTTP header `host`. If proxy target is a virtual host website, set the header `host`'s value to  the website domain name
+
+```javascript
+  server.use(proxy('www.foo.com', {
+    request : {
+      headers  : {
+        'host' : 'www.foo.com',
+      }
+    }
+  }));
+```
+
+
 ## Proxy With Configuration
 
 Allows complex configuration. More details in the [configuration section](#configuration-options)
 
 ```javascript
-  server.use(proxy('ww.foo.com', {
+  server.use(proxy('www.foo.com', {
     prefix  : 'foo',
     request : {
       forceHttps : true,

lib/proxy.js

@@ -152,7 +152,7 @@ function buildResultingMiddleware (host, options, sharedStream) {
     // compile the request object used for the `request` module call
     //
 
-    req.headers.host = host;
+    //req.headers.host = host;
 
     let reqOpts = {
       url     : URL.format(proxyUrl),

test/core_integration_tests.js

@@ -24,6 +24,7 @@ describe('Core Integration Tests', function () {
           strictSSL  : false,
           headers    : {
             'User-Agent' : 'Mozilla/5.0 (X11; Linux i686 (x86_64)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36',
+            'host' : 'api.github.com',
             Authorization : require('./github_auth_header')
           }
         },
@@ -41,6 +42,7 @@ describe('Core Integration Tests', function () {
         request : {
           headers    : {
             'User-Agent' : 'Mozilla/5.0 (X11; Linux i686 (x86_64)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36',
+            'host' : 'i.imgur.com',
           }
         }
       }));

test/regression_tests.js

@@ -25,6 +25,7 @@ describe('Regression Tests', function () {
           strictSSL  : false,
           headers    : {
             'User-Agent' : 'Mozilla/5.0 (X11; Linux i686 (x86_64)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36',
+            'host' : 'api.github.com',
             Authorization : require('./github_auth_header')
           }
         }