httparse VS rfcs

Compare httparse vs rfcs and see what are their differences.


A push parser for the HTTP 1.x protocol in Rust. (by seanmonstar)


RFCs for changes to Rust (by rust-lang)
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httparse rfcs
2 364
374 4,521
- 1.3%
6.4 8.9
about 2 months ago about 21 hours ago
Rust Shell
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of httparse. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-03-22.


Posts with mentions or reviews of rfcs. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-07-04.
  • Ask HN: Should I learn Rust or Go?
    3 projects | | 4 Jul 2022
    - Minimize GC pause times (we need reasonable performance at server workloads)

    This meant that the Go M:N Scheduler was usually the best performing stackful scheduler for server loads for a while. Interpreted languages like Python, Node and Lua were slower and were either single-threaded or had a GIL. Erlang and Java used a VM, and weren't optimized for low latency GC. C and C++ had coroutines libraries, but since these languages were not garbage-collected, it was harder to optimize the coroutine stack size.

    I think it created a wrong impression that the Go scheduler was revolutionary or best-in-class. It never was. The groundbreaking thing that Go did is to optimize the entire language for highly concurrent I/O-bound workloads. That, along with a sane (i.e. non-callback-based) asynchronous model and great PR from being a Google language helped Go popularize asynchronous programming.

    But I wouldn't say it is unmatched by any mainstream language nowadays. Java has low-latency GC nowadays and it's working on it's own Go-like coroutine implementation (Project Loom). But all mainstream JVM languages (Kotlin, Scala and Clojure) already have their own M:N schedulers.

    Rust, in the meantime, is strictly more performant than Go: It's using state-machine based stackless coroutines, which emulate the way that manual asynchronous implementations (like Nginx) are done in C. You can't get more efficient than that. Not to mention that Rust doesn't have a GC and features more aggressive compiler optimizations.

    [1] IIRC, initial stack sizes has changed between 2k-8k during the language lifetime, and the stack resizing mechanism has changed as well.



    [4] This is why it didn't have a package managers for many years. Google was just using a monorepo after all.

  • How do I prevent rust from emerging Rust if I already installed it with rustup?
    1 project | | 28 Jun 2022
    Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. rustup manages these builds in a consistent way on every platform that Rust supports, enabling installation of Rust from the beta and nightly release channels as well as support for additional cross-compilation targets.
  • What's New in Python 3.11?
    14 projects | | 26 Jun 2022
    > Box or anyhow::Error in these cases ergonomically

    This comes at the cost of losing the precise information what error-types could occur and makes it harder to read the code compared to a language that can use its typesystem to model that.

    > Your second point is dubious; I've never seen any crate use anything other than Result.

    Maybe. And you also barely see something like Result being used in Python. Is that because Result is bad? No. It is because it is _hard_ to use Result in Python, both of the lack of ergonomy compared to e.g. exceptions and also because it's not standard and people will look at you funny.

    So why is pretty much everyone in Rust using Result? Because using your own error-type causes exactly the problems that I mentioned (and more). So no matter how you look at it - this is a shortcoming of Rust and hopefully something that the Rust team will improve in the future. (E.g.

  • What is Box and how is it different from String in Rust?
    5 projects | | 25 Jun 2022
    Note that this is a very old RFC and doesn't have much context and discussion compared to later RFCs. It is worthwhile to read the actual discussion happened [1].


  • Getting a pointer to a field of an enum
    2 projects | | 25 Jun 2022
    There is a similar problem lined out inRFC 2195 "Really tagged unions" (and a solution for it) which focuses on creating a repr(C) and repr(C, Int) representation of non-C-like enums.
  • In rust, why can we not define an impl for a type defined outside the crate? What is the purpose of this restriction?
    1 project | | 23 Jun 2022
    In terms of a newtype mechanism that will also derive the traits of the original type, I believe this is the tracking RFC: It's an issue that I think virtually everybody wants, but it seems to be difficult to implement (for reasons that I actually don't understand).
  • Rust for the Kernel Could Possibly Be Merged for Linux 5.20
    13 projects | | 23 Jun 2022
  • What would you do given the task to create a brand new ISA?
    1 project | | 22 Jun 2022
    Take a look at why Rust removed green threads: the primary concerns are about the complexity (and thus code size) associated with making green threads work. Rust made the choice to not re-implement the standard IO library with non-blocking implementations. Java made the choice in Project Loom to do exactly that.
  • Linus Torvalds: Rust For The Kernel Could Possibly Be Merged For Linux 5.20
    4 projects | | 21 Jun 2022
    [This github issue.] (
  • Scala Multiplatform. Across the Universe
    4 projects | | 18 Jun 2022
    higher kinded polymorphism it's on the way

What are some alternatives?

When comparing httparse and rfcs you can also consider the following projects:

bubblewrap - Unprivileged sandboxing tool

rust-gc - Simple tracing (mark and sweep) garbage collector for Rust

Rust-for-Linux - Adding support for the Rust language to the Linux kernel. - Source code for

bitvec - A crate for managing memory bit by bit

polonius - Defines the Rust borrow checker.

unsafe-code-guidelines - Home for the Unsafe Code Guidelines working group.

Rocket - A web framework for Rust.

actix-web - Actix Web is a powerful, pragmatic, and extremely fast web framework for Rust.

rust-analyzer - A Rust compiler front-end for IDEs [Moved to:]

tokio - A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...

Clippy - A bunch of lints to catch common mistakes and improve your Rust code