open-standards/smart-byte/smart-byte-rs/crates/smart-byte-libp2p/tests/req_resp_fetch.rs
Transaction Science 35bb8c9910 smart-byte: the envelope wire format, v1 key-event logs, and their vectors
smart-byte-core
- `wire`: canonical CBOR for any serde type. `from_slice` refuses bytes that
  are not the decoded object's own encoding. Serde otherwise accepts an array
  of integers for a byte string, a byte string for text, and an array for a
  struct, each a second encoding the SAID does not cover.
- Controller AIDs. Controller signatures are checked against the key states
  replayed logs establish. One strict Ed25519 rule.
- The envelope: attested provenance, ownership chain and joule cost. Cargo
  carries a registered type tag.

smart-byte-keri-witness
- Events are §2 SAIDs over canonical CBOR.
- The default verifier is spec v1. It replays one event at a time and says
  which event it refused. It refuses `dip`, which skipped the pre-rotation
  check entirely, plus zero thresholds, duplicate keys, rotations after an
  empty `n`, and extension members.
- Extension mode, fixed:
  - Witness receipts carried their own key, so anyone could receipt in any
    witness's name. Witnesses are now named by their keys, and receipts sign
    everything they claim.
  - Duplicity evidence was gathered from unverified receipts.
  - Recovery accepted any keys; it now needs its witnesses' receipts.
  - OOBIs were signed by an embedded key; they are now controller signatures.
  - Configuration traits were never enforced, so they are gone.

VC, BBS+, CRDT, mDL, lockstep, libp2p and the CLI move to the new envelope.

smart-byte-conformance
- kel_vectors.json: 25 vectors.
- envelope_vectors.json: 18 vectors, checked against the logs' key states.
- The SAID and signature vectors are rebuilt on the real objects, so all the
  files describe one set of parties.
- Planted defects in every file are caught on their own vectors.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-09-30 23:00:57 -04:00

118 lines
3.9 KiB
Rust

//! Request-response: A asks B for an envelope by SAID; B serves it
//! directly (no DHT involved).
use std::time::Duration;
use libp2p::futures::StreamExt;
use libp2p::request_response::{self, Message};
use libp2p::swarm::SwarmEvent;
use smart_byte_core::{Aid, Cargo, Envelope, JouleCost, Said, Signer, SigningKey};
use smart_byte_libp2p::{
EnvelopeResponse, Libp2pNode, NodeConfig, SmartByteBehaviourEvent,
behaviour::default_gossipsub_config,
};
fn fixture_envelope() -> Envelope {
let issuer = Signer::single(
Aid::of_inception(Said::hash(b"req-resp")),
0,
SigningKey::from_bytes(&[0x42; 32]),
);
Envelope::issue(
&issuer,
Aid::of_inception(Said::hash(b"holder")),
[1; 16],
Cargo::opaque(b"reqresp-payload".to_vec()),
JouleCost::measured(3),
)
}
async fn spawn_node() -> Libp2pNode {
let cfg = NodeConfig {
listen_addrs: vec!["/ip4/127.0.0.1/tcp/0".parse().unwrap()],
bootstrap_peers: vec![],
identity: libp2p::identity::Keypair::generate_ed25519(),
enable_mdns: false,
enable_relay: false,
enable_dcutr: false,
gossipsub_config: default_gossipsub_config(),
};
Libp2pNode::new(cfg).await.expect("spawn node")
}
#[tokio::test]
async fn request_response_fetch() {
let mut node_a = spawn_node().await;
let mut node_b = spawn_node().await;
let b_addr = node_b
.listen_addrs
.first()
.cloned()
.expect("b listening");
// A dials B.
node_a.swarm.dial(b_addr).expect("dial");
// Warmup so the connection is fully established.
let warmup = tokio::time::Instant::now() + Duration::from_secs(2);
while tokio::time::Instant::now() < warmup {
tokio::select! {
_ = node_a.swarm.select_next_some() => {}
_ = node_b.swarm.select_next_some() => {}
_ = tokio::time::sleep(Duration::from_millis(50)) => {}
}
}
let env = fixture_envelope();
let env_for_b = env.clone();
// Send the request from A. We then concurrently:
// - drive A's swarm and read the response.
// - drive B's swarm and serve the response when the inbound
// request arrives.
let req = smart_byte_libp2p::EnvelopeRequest { said: env.said() };
let request_id = node_a
.swarm
.behaviour_mut()
.req_resp
.send_request(&node_b.local_peer_id, req);
let result = tokio::time::timeout(Duration::from_secs(10), async {
loop {
tokio::select! {
ev_b = node_b.swarm.select_next_some() => {
if let SwarmEvent::Behaviour(SmartByteBehaviourEvent::ReqResp(
request_response::Event::Message {
message: Message::Request { request: _, channel, .. },
..
})) = ev_b
{
let _ = node_b
.swarm
.behaviour_mut()
.req_resp
.send_response(channel, EnvelopeResponse { envelope: Some(env_for_b.clone()) });
}
}
ev_a = node_a.swarm.select_next_some() => {
if let SwarmEvent::Behaviour(SmartByteBehaviourEvent::ReqResp(
request_response::Event::Message {
message: Message::Response { request_id: rid, response },
..
})) = ev_a
&& rid == request_id
{
return response;
}
}
}
}
})
.await
.expect("not timed out");
let env_back = result.envelope.expect("envelope returned");
assert_eq!(env_back.said(), env.said());
env_back.check_saids().expect("SAIDs check");
}