hpack | Header Compression for HTTP/2 | HTTP library

 by   twitter Java Version: Current License: Apache-2.0

kandi X-RAY | hpack Summary

kandi X-RAY | hpack Summary

hpack is a Java library typically used in Networking, HTTP applications. hpack has no bugs, it has build file available, it has a Permissive License and it has high support. However hpack has 1 vulnerabilities. You can download it from GitHub, Maven.

HPACK
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            kandi-support Support

              hpack has a highly active ecosystem.
              It has 173 star(s) with 47 fork(s). There are 125 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 4 open issues and 9 have been closed. On average issues are closed in 20 days. There are 3 open pull requests and 0 closed requests.
              It has a positive sentiment in the developer community.
              The latest version of hpack is current.

            kandi-Quality Quality

              hpack has no bugs reported.

            kandi-Security Security

              hpack has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).

            kandi-License License

              hpack is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              hpack releases are not available. You will need to build from source code and install.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed hpack and discovered the below as its top functions. This is intended to give you an instant insight into hpack implemented functionality, and help decide if they suit your requirements.
            • Encode the header
            • Encodes the header field into the OutputStream
            • Removes the oldest header field from the dynamic table
            • Encodes a string literal using Huffman encoding algorithm
            • Decodes header block
            • Sets the maximum size of the dynamic table
            • Decodes a Huffman coded string literal
            • Decodes a header block
            • Helper method to build the tree
            • Inserts a symbol into the tree
            • Compares two header field names
            • Create a map of header field names to index values
            • Set the maximum table size
            Get all kandi verified functions for this library.

            hpack Key Features

            No Key Features are available at this moment for hpack.

            hpack Examples and Code Snippets

            No Code Snippets are available at this moment for hpack.

            Community Discussions

            QUESTION

            Running a custom per-component `IO ()` before building components, interleaved with actual building
            Asked 2021-Apr-06 at 09:52

            I have a per-component custom action that I would like to run before the given component is built:

            ...

            ANSWER

            Answered 2021-Apr-06 at 09:51

            It turns out I was on the right track, except I also need to include the so-called internal package DB in the list of package DBs. Distribution.Simple.Build exports a function called createInternalPackageDB, which, unfortunately, we can't use wholesale (since it deletes and re-initializes the internal package DB, in effect deleting the build outputs of previous components); but we can duplicate its behaviour:

            Source https://stackoverflow.com/questions/66423816

            QUESTION

            exclude temporarily a file from a `stack build` when using hpack (package.yaml)
            Asked 2021-Mar-13 at 14:11

            One may work on a haskell file in the source-dirs directory and decide for now not to include this file in a stack build. Is there a simple way to exclude temporarily the file form the build?

            The obvious work-around is to move the file to another directory, but I hope this can be achieved inside hpack in a simple way which I did not find in the hpack docs.

            ...

            ANSWER

            Answered 2021-Mar-13 at 14:11

            Specifying the module under an always false conditional will make hpack's auto-discovery skip it:

            Source https://stackoverflow.com/questions/66596041

            QUESTION

            pip getting killed in Docker
            Asked 2021-Feb-22 at 06:09

            I am building a Docker container based on python:3.7-slim-stretch (same problem also happens on python:3.7-slim-stretch), and it is getting Killed on

            ...

            ANSWER

            Answered 2021-Feb-22 at 06:09

            I experience something similar on Windows when my docker containers run out of memory in WSL. I think the settings are different for Mac, but it looks like there is info here on setting the VM RAM/disk size/swap file settings for Docker for Desktop on Mac:

            https://docs.docker.com/docker-for-mac

            Source https://stackoverflow.com/questions/66258967

            QUESTION

            Hardcode datadir path upon installing executable
            Asked 2021-Feb-15 at 22:19

            Problem: I've got a command-line tool written in Haskell that reads a data file. Upon installing the program, I'd like for the program to be able to read that data file regardless of the directory I find myself in. That is, upon installing, the path that the program knows should be aligned with the path that the installer chooses.

            Initial attempt: I was directed to the section 7.6. Accessing data files from package code in Cabal (the library) and learned that I can import getDataDir :: IO FilePath from Paths_myprog, as long as I add Paths_myprog to other-modules (although Hpack auto-includes this by default) and that after installing my program, I can run it with:

            ...

            ANSWER

            Answered 2021-Feb-15 at 22:19

            Files listed in data-files are already automatically installed in the right location so that Paths_pkg will find them. Here's a minimal example:

            Source https://stackoverflow.com/questions/66215545

            QUESTION

            PHP CURL - Apple push notification servers
            Asked 2021-Feb-08 at 08:15

            I am writing code to send notifications to the Apple push notification servers (APNs) using PHP Laravel. It says in the documents that it requires HTTP/ HPACK header compression.

            I've tried using cURL

            ...

            ANSWER

            Answered 2021-Feb-08 at 03:23

            I see a few things that could be problematic.

            Try adding the following to actually turn your request into a POST request.

            Source https://stackoverflow.com/questions/66095506

            QUESTION

            Unboxed vector of newtype hangs in basicUnsafeNew
            Asked 2020-Dec-06 at 11:13

            I'm trying to store a simple vector of three-dimensional points in space. To do this, I'm newtype-ing a custom Point and manually implement the Data.Vector.Unboxed.Vector and Data.Vector.Unboxed.Mutable instances for it.

            However, for some reason, any attempt to use such a vector ends up in an infinite loop in basicUnsafeNew. The following program will hang:

            ...

            ANSWER

            Answered 2020-Dec-06 at 11:13

            Well, just unroll the newtype definition:

            Source https://stackoverflow.com/questions/65167162

            QUESTION

            How to view http/2 header (hpack encoded) in human readable format from command line?
            Asked 2020-Dec-02 at 01:49

            During development, I need to see what exactly I am sending or receiving using cli (it makes it easier to automate).

            Normally I can put my http/1.0 header in a text file (in this case raw-http.txt), send request, and get response from command line using openssl.

            ...

            ANSWER

            Answered 2020-Dec-02 at 01:49

            Have you considered using something like curl for this? Ultimately you are no longer sending an exact series of bytes over a TCP socket, HTTP/2 is a very different beast. The raw-http2.txt resembles how browsers show headers, but of course the actual on-the-wire format is very different. There's a lot more to it than just compressing the headers.

            So you need something that takes a format humans can easily write/understand, and turn it into a HTTP/2 request. Curl is one of those tools but obviously doesn't take exactly your input format.

            Source https://stackoverflow.com/questions/65100876

            QUESTION

            Force static compilation in stack
            Asked 2020-Nov-28 at 12:29

            I use stack with multiple projects, I need to have two ways to compile them a "normal one" for the day-to-day development and one for the deployment.

            I use hpack and my projects look like that:

            ...

            ANSWER

            Answered 2020-Nov-28 at 12:29

            I have leveraged the Yaml include mechanism, here is my flags.yaml for static compilation:

            Source https://stackoverflow.com/questions/65013554

            QUESTION

            What nix function can I use to get the file extension?
            Asked 2020-Oct-07 at 08:28

            Often when building haskell projects I run into an error of the cabal file being present when using hpack instead.

            ...

            ANSWER

            Answered 2020-Oct-03 at 12:39

            I think you're looking for the hasSuffix function.

            Source https://stackoverflow.com/questions/64184181

            QUESTION

            stack-upgrade: Stack 1.5.1 to latest version
            Asked 2020-Aug-16 at 15:11

            I'm trying to upgrade my stack version. Currently I am using Ubuntu 18.04 on a VM, and my stack version is 1.5.1 which I downloaded using sudo apt haskell-stack (I was trying to run stack setup (using the latest version) to compile a program, where stack was not found so it recommended me to install it via this method). However, I am wanting to upgrade it to the latest version. This is what I get when I run stack upgrade:

            ...

            ANSWER

            Answered 2020-Aug-16 at 07:58

            It looks like stack was upgraded in a user-local way. Essentially, now you have two stack executables installed: one in /usr/bin and one in /home/claraina/.local/bin.

            That is fine. To run the new stack, you have to be sure that your PATH has the directory /home/claraina/.local/bin before /usr/bin in it, so that the new stack is run instead of the old one.

            Run echo $PATH to check your path. Then, if needed, edit .bash_profile accordingly.

            After you edit that file, either log out & log in again, or start a login shell to reload the changes (for that shell).

            Source https://stackoverflow.com/questions/63434479

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK dynamic header table into the dynamic header table. The attacker can then send a header block that is simply repeated requests to expand that field in the dynamic table. This can lead to a gigantic compression ratio of 4,096 or better, meaning that 16kB of data can decompress to 64MB of data on the target machine.

            Install hpack

            You can download it from GitHub, Maven.
            You can use hpack like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the hpack component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            CLONE
          • HTTPS

            https://github.com/twitter/hpack.git

          • CLI

            gh repo clone twitter/hpack

          • sshUrl

            git@github.com:twitter/hpack.git

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