stackaddr

Self-describing, layered address representation library, designed with flexibility and extensibility.

stackaddr provides a type-safe, composable, and future-proof way to represent complex address stacks, including transport protocols, cryptographic identities, metadata, and resource paths.

Features

• Segment-based architecture: each address consists of typed Segments
  • Protocols like /ip4, /tcp, /tls, /http
  • Identities like /node/<base32>, /uuid/<uuid>
  • Metadata like /meta/env/production
  • Path-like entries like /foo/bar
• Layered from L2 to L7: supports MAC, IP, TCP/UDP, TLS, HTTP, and more
  • /ip4/127.0.0.1/udp/4433/quic
  • /mac/aa:bb:cc:dd:ee:ff/ip4/192.168.1.1/tcp/80/http
• serde support(optional): enable with features = ["serde"]
• Easy parsing: implements FromStr, Display, and error types for easy parsing

Usage

Add stackaddr to your dependencies:

[dependencies]
stackaddr = "0.8"

To enable serde support:

[dependencies]
stackaddr = { version = "0.8", features = ["serde"] }

Example

Basic:

use stackaddr::{StackAddr, Protocol, Segment};

let addr = StackAddr::from_parts(&[
    Segment::Protocol(Protocol::Ip4("192.168.1.1".parse().unwrap())),
    Segment::Protocol(Protocol::Tcp(443)),
    Segment::Protocol(Protocol::Tls),
    Segment::Protocol(Protocol::Http),
]);

println!("{}", addr); 
// Output: /ip4/192.168.1.1/tcp/443/tls/http

From L2 to L4:

let s = "/mac/aa:bb:cc:dd:ee:ff/ip4/192.168.1.1/tcp/8080";
let addr: StackAddr = s.parse().expect("parse failed");

With identity:

let public_key: [u8; 32] = generate_public_key();
let id = Bytes::copy_from_slice(&public_key);
let addr = StackAddr::from_parts(&[
    Segment::Protocol(Protocol::Ip4("192.168.10.10".parse().unwrap())),
    Segment::Protocol(Protocol::Udp(4433)),
    Segment::Protocol(Protocol::Quic),
    Segment::Identity(Identity::NodeId(id)),
]);

With path:

let addr: StackAddr = "/dns/example.com/tcp/443/tls/http/images/logo.png".parse().unwrap();

With metadata:

let addr: StackAddr = "/meta/env/production".parse().unwrap();

Resolving to socket addresses:

use std::net::ToSocketAddrs;

let addr: StackAddr = "/dns/localhost/tcp/443".parse().unwrap();

// Structured host/port extraction
let (host, port) = addr.host_port().unwrap();
assert_eq!((host.as_str(), port), ("localhost", 443));

// System resolution for libraries expecting concrete socket addresses
let addrs = addr.socket_addrs().unwrap();
assert!(!addrs.is_empty());

// Or hand it directly to APIs that accept `ToSocketAddrs`
for sock in addr.to_socket_addrs().unwrap() {
    println!("Resolved: {}", sock);
}

Acknowledgment

Inspired by Multiaddr, StackAddr inherits its core ideas and provide a more general-purpose and extensible address representation.