Correct Resource not found in FileUtilTest (#654)

* update FileUtil to resolve new 403 error for requests with User-Agent header

* Updated User-Agent value for FileUtil

* Added check for HttpUrlConnection to changes done in #460

---------

Co-authored-by: david-gibbs-ig <david.gibbs@nadex.com>

Author: chrjohn

quickfixj-core/src/main/java/quickfix/FileUtil.java

@@ -24,7 +24,10 @@
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
+import java.net.HttpURLConnection;
 import java.net.URL;
+import java.net.URLConnection;
+
 
 public class FileUtil {
     public static String fileAppendPath(String pathPrefix, String pathSuffix) {
@@ -141,7 +144,18 @@ public static InputStream open(Class<?> clazz, String name, Location... location
                 break;
             case URL:
                 try {
-                    in = new URL(name).openStream();
+                    URL url = new URL(name);
+                    URLConnection urlConnection = url.openConnection();
+                    if (urlConnection instanceof HttpURLConnection) {
+                        HttpURLConnection httpURLConnection = (HttpURLConnection)urlConnection;
+                        httpURLConnection.setRequestProperty("User-Agent", "Java-QuickFIXJ-FileUtil");
+                        httpURLConnection.connect();
+                        in = httpURLConnection.getInputStream();
+                    } else {
+                        if (urlConnection != null) {
+                            in = urlConnection.getInputStream();
+                        }
+                    }
                 } catch (IOException e) {
                     // ignore
                 }

quickfixj-core/src/test/java/quickfix/FileUtilTest.java

@@ -67,6 +67,15 @@ public void testURLLocation() throws Exception {
         }
     }
 
+    @Test
+    public void testJARURLLocation() throws Exception {
+        // just test that we don't run into a ClassCastException
+        InputStream in = FileUtil.open(Message.class, "jar:file:/foo.bar!/");
+        if (in != null) {
+            in.close();
+        }
+    }
+
     @Test
     // QFJ-775
     public void testSessionIDFileName() {