fix: use GENERATOR_HOST variable in server generation

Author: fgreinacher

modules/swagger-generator/src/main/java/io/swagger/generator/resource/SwaggerResource.java

@@ -91,19 +91,7 @@ public Response generateClient(
             throws Exception {
 
         String filename = Generator.generateClient(language, opts);
-        String host = System.getenv("GENERATOR_HOST");
-
-        if (StringUtils.isBlank(host)) {
-            String scheme = request.getHeader("X-SSL");
-            String port = "";
-            if ("1".equals(scheme)) {
-                scheme = "https";
-            } else {
-                scheme = request.getScheme();
-                port = ":" + request.getServerPort();
-            }
-            host = scheme + "://" + request.getServerName() + port;
-        }
+        String host = getHost(request);        
 
         if (filename != null) {
             String code = String.valueOf(UUID.randomUUID().toString());
@@ -192,9 +180,7 @@ public Response generateServerForLanguage(@Context HttpServletRequest request, @
         String filename = Generator.generateServer(framework, opts);
         System.out.println("generated name: " + filename);
 
-        String host =
-                request.getScheme() + "://" + request.getServerName() + ":"
-                        + request.getServerPort();
+        String host = getHost(request);
 
         if (filename != null) {
             String code = String.valueOf(UUID.randomUUID().toString());
@@ -209,4 +195,22 @@ public Response generateServerForLanguage(@Context HttpServletRequest request, @
             return Response.status(500).build();
         }
     }
+
+    private String getHost(HttpServletRequest request) {
+        String host = System.getenv("GENERATOR_HOST");
+
+        if (StringUtils.isBlank(host)) {
+            String scheme = request.getHeader("X-SSL");
+            String port = "";
+            if ("1".equals(scheme)) {
+                scheme = "https";
+            } else {
+                scheme = request.getScheme();
+                port = ":" + request.getServerPort();
+            }
+            host = scheme + "://" + request.getServerName() + port;
+        }
+
+        return host;
+    }
 }