Arios

Arios is a small HTTP client crate written in Rust.

The project started as a study exercise and is being refactored into a publishable library crate. The current focus is on manual HTTP request/response handling, response metadata parsing, and a small public API.

Status

Arios currently supports:

• GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS
• HTTP and HTTPS
• HTTPS backed by rustls with native platform root certificates
• configurable Accept and Content-Type headers
• response metadata such as status code, content-type, charset, and content-length
• access to raw response bytes
• text decoding with built-in support for UTF-8, ISO-8859-1, and US-ASCII
• UTF-8 fallback when no charset is provided or when the charset is not supported
• explicit AriosError::HttpStatus errors for 4xx and 5xx responses

Current limitations:

• the API is still evolving
• URL parsing is intentionally simple
• advanced HTTP features are still limited
• HEAD responses are represented with an empty response body
• HTTPS depends on the operating system certificate store being available

Installation

Add the crate to your Cargo.toml:

[dependencies]
arios = "0.2.2"

Example: GET

use arios::{Arios, AriosResult, ContentType};

fn main() -> AriosResult<()> {
    let arios = Arios::create("https://httpbin.org/get")?;
    let response = arios.get(ContentType::Json)?;
    println!("{}", response.text()?);
    Ok(())
}

See also: examples/basic_get.rs

Example: POST

use arios::{Arios, AriosResult, ContentType};

fn main() -> AriosResult<()> {
    let arios = Arios::create("https://httpbin.org/post")?;
    let body = r#"{"name":"arios"}"#;
    let response = arios.post(body, ContentType::Json, ContentType::Json)?;
    println!("{}", response.text()?);
    Ok(())
}

See also: examples/basic_post.rs

Other Request Methods

Arios also exposes:

• head() for header-only requests
• options() for capability and method discovery
• put() and patch() for body-carrying updates
• delete() for resource deletion requests

head() returns an AriosResponse with an empty body. Calls that receive 4xx or 5xx statuses return AriosError::HttpStatus instead of a successful response value.

Response API

AriosResponse exposes:

• bytes() for raw response bytes
• text() for decoded textual content
• public metadata fields such as code, status, content_type, charset, and content_length

text() currently supports utf-8, iso-8859-1, and us-ascii. If the response does not declare a charset, or declares one that Arios does not support yet, decoding falls back to UTF-8.