Struct TlsProfilePack 

pub struct TlsProfilePack {
    pub profile: &'static TlsProfile,
    pub metadata: ProfileMetadata,
}

A versioned TLS profile bundle pairing a TlsProfile with its ProfileMetadata.

Bind the axes — the fingerprint axes travel as one unit

The TlsProfilePack is the durable identity of a scraping client: the TLS handshake fingerprint, the HTTP/2 SETTINGS frame, the HTTP/3 perk, and the user-agent are bound together in a single value. A profile that pins Chrome 136 cannot ship with a Safari 17 UA; the type system refuses to express the combination.

The pattern comes from a real production fix that the source scraping guide calls out as the right way to address fingerprint defects: “Rather than finding the correct setting, they made the wrong one impossible to express: the handshake profile and the user agent now travel together as a single unit, so you cannot select one without the other. The bug cannot be recreated by a future edit. That is the difference between fixing a defect and removing a class of defect.” (Web Scraping Guide §Innovation, Aug 2026)

All public constructors of TlsProfilePack (the family-specific statics — PACK_CHROME_131, PACK_FIREFOX_133, etc. — and the ProfileChannel::resolve pathway) return the pack as a whole, never a half-populated subset. The wire-level fingerprint cannot be selected independently of the UA, the HTTP/2 SETTINGS, or the HTTP/3 perk because no constructor accepts them independently.

Example

use stygian_browser::tls::{PACK_CHROME_131, ProfileChannel};

let pack = ProfileChannel::ChromeLatest.resolve(None).unwrap();
assert_eq!(pack.profile.name, "Chrome 131");
assert!(pack.metadata.h2_support);
println!("{}", pack.metadata.provenance());

Fields

profile: &'static TlsProfile

The TLS fingerprint profile.

metadata: ProfileMetadata

Provenance and capability metadata.

Trait Implementations

impl Debug for TlsProfilePack

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.