http2-header-impersonation

1# HTTP/2 Header Impersonation
2 
3Spoof HTTP/2 SETTINGS frames, pseudo-header ordering, and browser-specific HTTP headers to match real browsers at the protocol level. Targets the detection gap between TLS fingerprinting (ClientHello) and JavaScript fingerprinting — the HTTP/2 connection setup and header structure that anti-bot systems analyze. Matches Chrome, Firefox, Safari iOS, and OkHttp (Android) profiles with exact window sizes, header list limits, and header ordering.
4 
5## When to Use
6 
7- TLS fingerprint is correct but target still detects non-browser HTTP behavior.
8- Target uses HTTP/2-specific detection (SETTINGS frame analysis, pseudo-header order).
9- Need browser-accurate `sec-ch-ua`, `Accept`, `Accept-Encoding`, `Priority`, and `sec-fetch-*` headers.
10- Mobile API endpoints require Android OkHttp header profiles.
11- Combining with TLS impersonation for a complete network-level browser profile.
12 
13## Prerequisites
14 
15- `terminal` with python3.
16- `pip install impit` (includes HTTP/2 impersonation via patched h2 library).
17- Or standalone: use the header lists below to configure curl/httpx manually.
18 
19## How to Run
20 
21```bash
22# Compare default client headers with a browser profile
23export TARGET="https://target.com"
24 
25python3 - <<'PY'
26import os
27import requests
28 
29url = os.environ["TARGET"]
30default = requests.get(url, timeout=15)
31browser = requests.get(url, timeout=15, headers={
32…