flowscope 0.22.0

Passive flow & session tracking for packet capture (runtime-free, cross-platform)
Documentation 
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//! Integration test for `flowscope::quic::parse` using the
//! RFC 9001 §A.1 canonical Client Initial test vector.
//!
//! Issue #3 (0.18).

#![cfg(feature = "quic")]

use flowscope::quic::{QuicVersion, parse};

fn hex_decode(s: &str) -> Vec<u8> {
    (0..s.len())
        .step_by(2)
        .map(|i| u8::from_str_radix(&s[i..i + 2], 16).expect("valid hex"))
        .collect()
}

/// Canonical RFC 9001 §A.1 Client Initial packet — 1200
/// bytes including 18-byte AAD header + AEAD ciphertext.
/// The decrypted CRYPTO frame carries a TLS ClientHello
/// with SNI `example.com`.
fn rfc9001_client_initial() -> Vec<u8> {
    hex_decode(concat!(
        "c000000001088394c8f03e515708",
        "0000449e",
        "7b9aec34d1b1c98dd7689fb8ec11",
        "d242b123dc9bd8bab936b47d92ec356c",
        "0bab7df5976d27cd449f63300099f399",
        "1c260ec4c60d17b31f8429157bb35a12",
        "82a643a8d2262cad67500cadb8e7378c",
        "8eb7539ec4d4905fed1bee1fc8aafba1",
        "7c750e2c7ace01e6005f80fcb7df6212",
        "30c83711b39343fa028cea7f7fb5ff89",
        "eac2308249a02252155e2347b63d58c5",
        "457afd84d05dfffdb20392844ae81215",
        "4682e9cf012f9021a6f0be17ddd0c208",
        "4dce25ff9b06cde535d0f920a2db1bf3",
        "62c23e596dee38f5a6cf3948838a3aec",
        "4e15daf8500a6ef69ec4e3feb6b1d98e",
        "610ac8b7ec3faf6ad760b7bad1db4ba3",
        "485e8a94dc250ae3fdb41ed15fb6a8e5",
        "eba0fc3dd60bc8e30c5c4287e53805db",
        "059ae0648db2f64264ed5e39be2e20d8",
        "2df566da8dd5998ccabdae053060ae6c",
        "7b4378e846d29f37ed7b4ea9ec5d82e7",
        "961b7f25a9323851f681d582363aa5f8",
        "9937f5a67258bf63ad6f1a0b1d96dbd4",
        "faddfcefc5266ba6611722395c906556",
        "be52afe3f565636ad1b17d508b73d874",
        "3eeb524be22b3dcbc2c7468d54119c74",
        "68449a13d8e3b95811a198f3491de3e7",
        "fe942b330407abf82a4ed7c1b311663a",
        "c69890f4157015853d91e923037c227a",
        "33cdd5ec281ca3f79c44546b9d90ca00",
        "f064c99e3dd97911d39fe9c5d0b23a22",
        "9a234cb36186c4819e8b9c592772663229",
        "1d6a418211cc2962e20fe47feb3edf33",
        "0f2c603a9d48c0fcb5699dbfe5896425",
        "c5bac4aee82e57a85aaf4e2513e4f057",
        "96b07ba2ee47d80506f8d2c25e50fd14",
        "de71e6c418559302f939b0e1abd576f2",
        "79c4b2e0feb85c1f28ff18f58891ffef",
        "132eef2fa09346aee33c28eb130ff28f",
        "5b766953334113211996d20011a198e3",
        "fc433f9f2541010ae17c1bf202580f60",
        "47472fb36857fe843b19f5984009ddc3",
        "24044e847a4f4a0ab34f719595de3725",
        "2d6235365e9b84392b061085349d7320",
        "3a4a13e96f5432ec0fd4a1ee65accdd5",
        "e3904df54c1da510b0ff20dcc0c77fcb",
        "2c0e0eb605cb0504db87632cf3d8b4da",
        "e6e705769d1de354270123cb11450efc",
        "60ac47683d7b8d0f811365565fd98c4c",
        "8eb936bcab8d069fc33bd801b03adea2",
        "e1fbc5aa463d08ca19896d2bf59a071b",
        "851e6c239052172f296bfb5e72404790",
        "a2181014f3b94a4e97d117b438130368",
        "cc39dbb2d198065ae3986547926cd216",
        "2f40a29f0c3c8745c0f50fba3852e566",
        "d44575c29d39a03f0cda721984b6f440",
        "591f355e12d439ff150aab7613499dbd",
        "49adabc8676eef023b15b65bfc5ca069",
        "48109f23f350db82123535eb8a7433bd",
        "abcb909271a6ecbcb58b936a88cd4e8f",
        "2e6ff5800175f113253d8fa9ca8885c2",
        "f552e657dc603f252e1a8e308f76f0be",
        "79e2fb8f5d5fbbe2e30ecadd220723c8",
        "c0aea8078cdfcb3868263ff8f0940054",
        "da48781893a7e49ad5aff4af300cd804",
        "a6b6279ab3ff3afb64491c85194aab76",
        "0d58a606654f9f4400e8b38591356fbf",
        "6425aca26dc85244259ff2b19c41b9f9",
        "6f3ca9ec1dde434da7d2d392b905ddf3",
        "d1f9af93d1af5950bd493f5aa731b405",
        "6df31bd267b6b90a079831aaf579be0a",
        "39013137aac6d404f518cfd46840647e",
        "78bfe706ca4cf5e9c5453e9f7cfd2b8b",
        "4c8d169a44e55c88d4a9a7f947424110",
        "92abbdf8b889e5c199d096e3f24788",
    ))
}

#[test]
fn parses_rfc9001_client_initial_with_sni() {
    let datagram = rfc9001_client_initial();
    assert_eq!(datagram.len(), 1200);
    let msg = parse(&datagram).expect("parse should yield a QuicInitial");
    assert_eq!(msg.version, QuicVersion::V1);
    assert!(msg.version.is_v1());
    assert_eq!(msg.version.as_u32(), 0x0000_0001);
    assert_eq!(msg.dcid, hex_decode("8394c8f03e515708"));
    assert!(msg.scid.is_empty());
    assert!(!msg.token_present);
    assert_eq!(msg.sni.as_deref(), Some("example.com"));
}

// JA4-over-QUIC (issue #82). Requires `tls` to surface the full
// ClientHello and `tls-fingerprints` for the JA4 builder.
#[cfg(feature = "tls-fingerprints")]
#[test]
fn rfc9001_initial_yields_ja4_quic() {
    let datagram = rfc9001_client_initial();
    let msg = parse(&datagram).expect("parse should yield a QuicInitial");

    // The full ClientHello is surfaced under `tls`.
    let ch = msg
        .client_hello
        .as_ref()
        .expect("RFC 9001 Initial carries a ClientHello");
    assert_eq!(ch.sni.as_deref(), Some("example.com"));
    assert!(
        !ch.cipher_suites.is_empty(),
        "JA4 needs the cipher list surfaced"
    );

    // `quic::ja4` convenience == `tls::ja4_quic` on the ClientHello.
    let fp = flowscope::quic::ja4(&msg).expect("ja4-quic over the Initial");
    assert_eq!(fp, flowscope::tls::ja4_quic(ch));

    // Transport marker is `q`, version TLS 1.3, SNI present (`d`).
    assert!(
        fp.starts_with("q13d"),
        "expected q13d… JA4-QUIC header, got {fp}"
    );

    // Byte-identical to the TCP JA4 except the leading transport char.
    let tcp = flowscope::tls::ja4_fingerprint(ch);
    assert!(tcp.starts_with("t13d"));
    assert_eq!(
        &fp[1..],
        &tcp[1..],
        "q/t fingerprints differ only in transport"
    );
}