Static middleware fix

Author: simonwep

src/express/http/response/Response.java

@@ -154,7 +154,7 @@ private void sendHeaders() {
     try {
 
       // Fallback
-      String contentType = getContentType().getMIME() == null ? MediaType._bin.getMIME() : getContentType().getMIME();
+      String contentType = getContentType().getExtension() == null ? MediaType._bin.getExtension() : getContentType().getMIME();
 
       // Set header and send response
       this.HEADER.set("Content-Type", contentType);

src/express/utils/MediaType.java

@@ -695,8 +695,8 @@ public enum MediaType {
   private String MIME;
   private String extension;
 
-  MediaType(String MIME, String extension) {
-    this.MIME = MIME;
+  MediaType(String extension, String mime) {
+    this.MIME = mime;
     this.extension = extension;
   }
 

src/express/utils/Utils.java

@@ -78,7 +78,11 @@ public static String getYourIp() throws UnknownHostException {
    */
   public static String getExtension(@NotNull File file) {
     String path = file.getAbsolutePath();
-    return path.substring(path.lastIndexOf('.'));
+    int indx = path.lastIndexOf('.') + 1;
+    if (indx == 0)
+      return null;
+
+    return path.substring(indx);
   }
 
 }