Orb

Why Orb tools?

Modern Protocols

Full support for HTTP/1.1, HTTP/2, and HTTP/3 (QUIC). Automatically negotiates the best protocol or force a specific version.

WebSocket Support

Connect to WebSocket servers with ws:// and wss:// URLs. Interactive mode for sending messages or script-friendly single-message mode.

cURL Compatible

Familiar command-line interface inspired by cURL. Easy migration with similar options like -H, -d, -X, -u, and more.

Built with Rust

Fast, memory-safe, and cross-platform. Single binary with no runtime dependencies.

orb-cli

# Simple GET request
orb https://api.example.com/users

# POST with JSON data
orb https://api.example.com/users -X POST --json '{"name": "Alice"}'

# Force HTTP/3
orb https://example.com --http3

# WebSocket connection
orb wss://echo.websocket.org --ws-message "Hello!"

Features

Feature	Orb	cURL
HTTP/1.1	✓	✓
HTTP/2	✓	✓
HTTP/3 (QUIC)	✓	✓ (experimental)
WebSocket	✓	✗
JSON shorthand	--json	-H + -d
Progress bar	✓	✓
Compression	zstd, br, gzip, deflate	gzip, deflate, br
Cookie jar	✓	✓
Multipart forms	✓	✓
Proxy support	HTTP, SOCKS5	HTTP, SOCKS4/5
mTLS	✓	✓

orb-mockhttp

A powerful mock HTTP server library for testing Rust applications. Supports HTTP/1.1, HTTP/2, HTTP/3, and WebSockets.

use orb_mockhttp::TestServerBuilder;

let server = TestServerBuilder::new().with_tls().build();

server.on_request("/api/users")
    .expect_method("GET")
    .respond_with(200, r#"{"users": []}"#);

// Use server.url("/api/users") in your tests

CLI Documentation

Learn how to use all of orb’s features. Read the CLI docs →

orb-mockhttp

Set up mock servers for testing. Read the mockhttp docs →