Skip to main content

Gzip upload on browsers



Today, I faced a problem that I could not upload my archive file with gzip format on Firefox, even it worked on Chrome. I was using macOS. My application had a setting to whitelist accepted files. I’ve already added "application/gzip" to that list. "It’s strange!", I thought.

I finally figured out that my uploaded file's type actually was "application/x-gzip" on Firefox. I also asked my colleagues to check their uploaded files on Window and Ubuntu. Hmm… they were totally different! It was "application/x-compressed" on Window, and was "application/x-compressed-tar" on Ubuntu.

In fact, gzip is already standardized by IANA. There is a note in RFC-6713 as below:

"Some applications have informally used media types such as application/gzip-compressed, application/gzipped, application/x-gunzip, application/x-gzip, application/x-gzip-compressed, and gzip/document to describe data compressed with gzip. The media types defined in this document should replace those media types in future applications."

As you can see, the difference of media types among browsers still persists as of this writing. That was the root cause!

Therefore, I had to added all media types including "application/zip,application/x-gzip,application/x-compressed,application/x-compressed-tar" in my app's whitelist.
Labels:

Comments

  1. thongmleApril 19, 2020 at 2:23 AM

    anh làm một blog về sự quan trọng của tiếng anh ( speaking, writing ) đi anh. Một dev có được skill viết như anh thì có được đãi ngộ gì đặc biệt hơn kh ạ

    ReplyDelete
    Replies
    1. Huong NguyenApril 23, 2020 at 9:09 AM

      Để mình kể cho bạn nghe câu chuyện học tiếng Anh của mình để xem nó quan trọng thế nào với mình nhé. Thực ra, ban đầu động lực học tiếng Anh duy nhất của mình là cố gắng "sống sót" trong môi trường làm việc sử dụng tiếng Anh để giao tiếp. Lúc đó, trong team mình còn "bị đánh giá" là hạng D (trong thang điểm A, B, C, D). Ghê chưa! Nhìn xung quanh sao người ta ai cũng giỏi, ai cũng hay quá, thế là mình hạ quyết tâm học cho bằng được. Trong lúc người ta còn ngủ, mình phải dậy sớm học tiếng Anh; trong lúc người ta nghỉ trưa, mình học tiếng Anh; và trong lúc người ta đi xem phim tối, mình học tiếng Anh. Trong vòng 6 tháng như vậy thì mình đã tự tin ra hẳn, nói được và nghe được. Từ đó, mình cảm thấy tiếng Anh là một thứ gì đó không thể thiếu hằng ngày. Mình có thể đọc sách tiếng Anh, xem phim tiếng Anh, học khoá học tiếng Anh, đi meetup nói tiếng Anh, vân vân. Vậy là khi thành thạo nó thì bây giờ nó trở thành công cụ giúp mình tiếp nhận rất nhiều thông tin, học hỏi được nhiều thứ, và "enjoy" cuộc sống nhiều hơn.

      Trong môi trường sử dụng tiếng Anh để giao tiếp, nếu bạn có tiếng Anh tốt thì bạn mới giao tiếp tốt. Ngôn ngữ cũng giống như protocol trong phần mềm. Bạn phải hiểu và sử dụng đúng protocol thì hệ thống mới hoạt động đúng. Bạn giỏi tiếng Anh, bạn tự tin khi giao tiếp với khách hàng, bạn tự tin viết tài liệu, bạn tư tin xông pha học cái mới, bạn tự tin khi thuyết trình, vân vân. Bạn sẽ được giao nhiều việc quan trọng và mang lại nhiều giá trị cho công ty. Như vậy, vì cái "dich vụ" của bạn quá tốt, chắc chắn bạn phải thoả thuận được "giá cao". :)

      Delete

Post a Comment

Popular posts from this blog

Junit - Test fails on French or German string assertion

In my previous post about building a regex to check a text without special characters but allow German and French . I met a problem that the unit test works fine on my machine using Eclipse, but it was fail when running on Jenkins' build job. Here is my test: @Test public void shouldAllowFrenchAndGermanCharacters(){ String source = "ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ"; assertFalse(SpecialCharactersUtils.isExistSpecialCharater(source)); } Production code: public static boolean isExistNotAllowedCharacters(String source){ Pattern regex = Pattern.compile("^[a-zA-Z_0-9_ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ]*$"); Matcher matcher = regex.matcher(source); return !matcher.matches(); } The result likes the following: Failed tests: SpecialCharactersUtilsTest.shouldAllowFrenchAndGermanCharacters:32 null A guy from stackoverflow.com says: "This is probably due to the default encoding used for your Java source files. The ö in the string literal in the J...
5 comments
Read more

Strategy Design Pattern

For example, I have a program with an Animal abstract class and two sub-classes Dog and Bird. I want to add new behavior for the class Animal, this is "fly".  Now, I face two approaches to solve this issue: 1. Adding an abstract method "fly" into the class Animal. Then, I force the sub-classes should be implemented this method, something like: public abstract class Animal{ //bla bla public abstract void fly(); } public class Bird extends Animal{ //bla bla public void fly(){ System.out.println("Fly high"); } } public class Dog extends Animal{ //bla bla public void fly(){ System.out.println("Cant fly"); } } 2. Creating an interface with method "fly" inside. The same issue to an abstract class, I force the classes these implement this interface should have a method "fly" inside: public interface Flyable{ public void fly(); } public class Bird implements Flyable{ //bla bla public void fly(){ System.out.pr...
Post a Comment
Read more

The power of acceptance test

User Story is the place PO gives his ideas about features so that developers are able to know what requirements are. Acceptance tests are these show the most valuable things of the features represented by some specific cases. Usually PO defines them, but not always. Therefore, refining existing acceptance tests – even defining new ones that cover all features of the User Story must be a worth task. Acceptance test with Given When Then pattern If we understand what we are going to do, we can complete it by 50% I have worked with some members those just start implementing the features one by one and from top to down of the User Story description. Be honest, I am the one used to be. What a risky approach! Because it might meet a case that is very easy to miss requirements or needs to re-work after finding any misunderstood things. I have also worked with some members those accept spending a long time to clarify the User Story. Reading carefully of whole User Story by defining...
Post a Comment
Read more

What the heck is Meteor DDP?

I was using Meteor for my messenger project. I was so curious about the real time connection. I wanted to know how exactly this mechanism works. In this post, I will go through the DDP Specification, an overview of WebSocket, and a simple demo about how to subscribe a publication of Rocket.Chat (containing a DDP server) from an external webpage. At a glance, I knew that Meteor invented a protocol called DDP which uses for handling real time connection. So then, what is DDP? "DDP (Distributed Data Protocol) is the stateful WebSocket protocol that Meteor uses to communicate between the client and the server." [1] All right! Why does DDP matter? "DDP is a standard way to solve the biggest problem facing client-side JavaScript developers: querying a server-side database, sending the results down to the client, and then pushing changes to the client whenever anything changes in the database" . [2] In order to understand deeply the protocol, I decided ...
Post a Comment
Read more

BIRT - Fix the size of an image

I use a dynamic image as a logo my report in pdf. At the beginning, I use table to align the logo in left or right. I meet a problem with some images with a large width or height. My customer requires that the logo should be displayed in original size. These following steps solves my problem: 1. Use Grid instead of Table 2. Set Grid "Height" is 100%  and "Width" is blank 3. Set "Fit to container" for images are "true". Download the the template here .
Post a Comment
Read more