I built an HTTP client that perfectly mimics Chrome 142
Details
- External ID
- 45857312
- Source
- HN
- Company
- —
- Product
- I built an HTTP client that perfectly mimics Chrome 142
- Website domain
- github.com
- Launched
- Nov. 8, 2025
- Cohort
- —
- Upvotes
- 39
- Upvotes percentile
- 0.7936681222707423
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
BoringSSL and nghttp2. Matches JA3N, JA4, and JA4_R fingerprints. Supports HTTP/2, async/await, and works with Cloudflare-protected sites. Not trying to compete with curl_cffi - just a learning project that turned into something functional.
Enrichment
- Theme
- proxy, dns, and networking tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- http client mimicking chrome
- Manually corrected
- False
Could you build this?
No Perfectly mimicking modern browser TLS and HTTP/2 network stacks to bypass advanced anti-bot defenses requires low-level C/C++ networking, custom BoringSSL configurations, and precise protocol-level tuning.
What it would actually take: Requires compiling custom BoringSSL forks, finely tuning TLS extensions, cipher suites, ALPN, GREASE values, and exact HTTP/2 frame and window behaviors to replicate Chrome's JA3/JA4/JA4_R signatures. Developers need deep expertise in network security, protocol reverse-engineering, and C bindings to successfully evade Cloudflare and Akamai bot detection.
Discussion
6 comments analyzed.
Competitors mentioned: curl-impersonate
Concerns raised: Project abandonment risk and maintenance burden with browser changes, Large portion of code appears LLM-generated rather than hand-coded
Feature requests: JS/TS version of the tool
Competitors
Other products that read as similar to this one — 137 launches clear the similarity bar, closest 8 shown.
Attention rank: #22 of 138 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 10 days after the earliest competitor.
- Lightweight C++23 S3 client with no extra deps (just curl and OpenSSL) · hn · 2026-06-13 · 5 upvotes · similarity 0.50
- Snitchmd · hn · 2026-04-29 · 8 upvotes · similarity 0.49
- geektls · github · 2026-09-24 · 10 upvotes · similarity 0.49
- HTTP/3 and raw QUIC client/server APIs for Node.js · hn · 2026-06-08 · 16 upvotes · similarity 0.46
- QTap DevTools · hn · 2026-01-21 · 30 upvotes · similarity 0.43
- alettagap · github · 2026-09-09 · 10 upvotes · similarity 0.42
- Minimal NIST/OWASP-compliant auth implementation for Cloudflare Workers · hn · 2026-02-09 · 33 upvotes · similarity 0.42
- Scheme HTTP server with transparent async · hn · 2026-03-29 · 17 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.