Fix Host header is broken on virtual host, close AsyncHttpClient#907

Author: slandelle

api/src/main/java/org/asynchttpclient/util/AsyncHttpProviderUtils.java

@@ -174,4 +174,15 @@ private static void encodeAndAppendFormParam(final StringBuilder sb, final CharS
         }
         sb.append('&');
     }
+    
+    public static String hostHeader(Request request, Uri uri) {
+        String virtualHost = request.getVirtualHost();
+        if (virtualHost != null)
+            return virtualHost;
+        else {
+            String host = uri.getHost();
+            int port = uri.getPort();
+            return port == -1 || port == getSchemeDefaultPort(uri.getScheme()) ? host : host + ":" + port;
+        }
+    }
 }

providers/netty3/src/main/java/org/asynchttpclient/netty/request/NettyRequestFactory.java

@@ -82,12 +82,6 @@ else if (proxyServer != null && !useProxyConnect(uri))
         }
     }
 
-    private String hostHeader(Request request, Uri uri) {
-        String host = request.getVirtualHost() != null ? request.getVirtualHost() : uri.getHost();
-        int port = uri.getPort();
-        return port == -1 || port == getSchemeDefaultPort(uri.getScheme()) ? host : host + ":" + port;
-    }
-
     public String firstRequestOnlyAuthorizationHeader(Request request, Uri uri, ProxyServer proxyServer, Realm realm) throws IOException {
         String authorizationHeader = null;
 

providers/netty4/src/main/java/org/asynchttpclient/netty/request/NettyRequestFactory.java

@@ -83,12 +83,6 @@ else if (proxyServer != null && !useProxyConnect(uri))
         }
     }
 
-    private String hostHeader(Request request, Uri uri) {
-        String host = request.getVirtualHost() != null ? request.getVirtualHost() : uri.getHost();
-        int port = uri.getPort();
-        return port == -1 || port == getSchemeDefaultPort(uri.getScheme()) ? host : host + ":" + port;
-    }
-
     public String firstRequestOnlyAuthorizationHeader(Request request, Uri uri, ProxyServer proxyServer, Realm realm) throws IOException {
         String authorizationHeader = null;