Merge pull request #1430 from swagger-api/url_redirect

adding redirect response codes to remote url

Author: gracekarina

modules/swagger-parser-v3/src/main/java/io/swagger/v3/parser/util/RemoteUrl.java

@@ -150,7 +150,8 @@ public static String urlToString(String url, List<AuthorizationValue> auths) thr
                 conn.setRequestProperty("User-Agent", USER_AGENT_HEADER_VALUE);
                 conn.connect();
                 url = ((HttpURLConnection) conn).getHeaderField("Location");
-            } while (301 == ((HttpURLConnection) conn).getResponseCode());
+            } while ((301 == ((HttpURLConnection) conn).getResponseCode())||(302 == ((HttpURLConnection) conn).getResponseCode())
+                    || (307 == ((HttpURLConnection) conn).getResponseCode())||(308 == ((HttpURLConnection) conn).getResponseCode()));
             InputStream in = conn.getInputStream();
 
             StringBuilder contents = new StringBuilder();

modules/swagger-parser-v3/src/test/resources/relativeTest.yaml

@@ -0,0 +1,10 @@
+RelativeObj:
+  type: object
+  properties:
+    lorem:
+      type: object
+      properties:
+        firstName:
+          type: string
+        lastName:
+          type: string