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‎HTTPS_VPN_README.md‎

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# HTTPS VPN - Undetectable VPN with National Crypto Support
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> **The only VPN that looks exactly like regular browser traffic — while supporting any national cryptography standard.**
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---
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## The Problem
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Organizations in many countries face a critical dilemma:
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1. **Regulatory compliance requires national cryptography** — Russia mandates GOST, China requires SM2/SM3/SM4, and other nations have their own standards. Using non-compliant crypto is illegal for regulated industries.
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2. **Existing VPNs are easily detected** — Traditional VPN protocols (WireGuard, OpenVPN, even VMess) have unique signatures that AI-powered DPI systems can identify and block.
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3. **Certification is prohibitively expensive** — xray-core has ~100,000 lines of code. Getting that much code certified costs millions and takes months.
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4. **Integration means rewriting everything** — Switching VPN solutions typically requires rebuilding management panels, client apps, and infrastructure.
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---
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## The Solution
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HTTPS VPN solves all four problems with a single architectural insight:
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> **What if your VPN traffic was literally indistinguishable from browser HTTPS traffic?**
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### How We Do It
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Instead of inventing a new VPN protocol, we use the **exact same protocol browsers use every day**:
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```
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Your VPN: Client ──TLS 1.3──> HTTP/2 CONNECT ──> [tunnel data]
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Browser: Client ──TLS 1.3──> HTTP/2 CONNECT ──> [proxy data]
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```
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Both are **RFC 7540 + RFC 7231 compliant**. AI-based DPI cannot tell them apart — because they **are** the same protocol.
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### Pluggable National Crypto
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Swap crypto providers without changing a single line of core code:
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| Country | Crypto | Status |
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|---------|--------|--------|
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| 🇺🇸 USA | AES-GCM (NIST) | ✅ Built-in |
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| 🇷🇺 Russia | GOST R 34.10/12/15 | 🔜 Phase 2 |
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| 🇨🇳 China | SM2/SM3/SM4 | 🔜 Phase 2 |
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| 🇪🇺 EU | Brainpool ECC | 🔜 Phase 3 |
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| 🇯🇵 Japan | Camellia | 🔜 Phase 3 |
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| 🇰🇷 Korea | SEED | 🔜 Phase 3 |
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---
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## Key Benefits
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### For Compliance Officers
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✅ **Legal in regulated markets** — Use government-approved cryptography
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✅ **Certification-ready** — Only ~700 LOC to certify (vs. 100,000+ for xray-core)
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✅ **Audit-friendly** — Small, well-documented codebase
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### For IT Operations
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✅ **Zero infrastructure changes** — Works with existing 3x-ui, marzban panels
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✅ **Drop-in replacement** — Same JSON config, same API as xray-core
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✅ **Undetectable** — Looks like Chrome/Firefox HTTPS proxy traffic
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### For Security Teams
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✅ **Minimal attack surface** — 143x smaller codebase than xray-core
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✅ **Isolated crypto modules** — Each national crypto is a separate, auditable component
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✅ **Standard TLS 1.3** — Battle-tested transport security
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### For End Users
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✅ **Just works** — No configuration needed
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✅ **Fast** — HTTP/2 multiplexing, minimal overhead
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✅ **Reliable** — Graceful reconnection, automatic failover
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---
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## How It Works (Simple)
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### The Browser Trick
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Imagine you're at an internet café. The café blocks all VPNs... but it **must** allow browsers to visit HTTPS websites.
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When your browser visits `https://example.com`, it:
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1. Opens a TLS connection (encrypted)
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2. Sends `CONNECT example.com:443` (standard HTTP proxy request)
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3. Gets `200 Connection Established` back
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4. Starts sending encrypted data through the tunnel
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**HTTPS VPN does exactly this.** The DPI system sees:
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- ✅ TLS 1.3 handshake (normal for any HTTPS site)
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- ✅ HTTP/2 protocol (normal for modern browsers)
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- ✅ CONNECT method (normal for proxy traffic)
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- ✅ Traffic to known CDN IPs (normal for web browsing)
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**Result:** Your VPN connection is **literally invisible** because it **is** standard HTTPS.
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### The Crypto Swap
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Think of crypto providers like SIM cards:
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```
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┌─────────────────────────────────────┐
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│ HTTPS VPN Core │
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│ (~700 LOC - fixed) │
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├─────────────────────────────────────┤
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│ [ US ] [ RU ] [ CN ] [ EU ] ... │
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│ AES GOST SM2 Brainpool │
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│ (swap without touching the core) │
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└─────────────────────────────────────┘
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```
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Need GOST for Russia? Install the GOST module. Need SM for China? Install the SM module. The core doesn't change — only the crypto "SIM card."
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---
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## Example Scenario
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### Scenario: Russian Bank Needs Compliant VPN
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**Before:**
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- Bank uses WireGuard (AES-256)
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- Regulator says: "Illegal. Must use GOST."
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- Options:
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1. Build custom GOST-WireGuard (6 months, $500K+)
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2. Buy expensive commercial solution (ongoing licensing)
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3. Risk non-compliance fines
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**After:**
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```bash
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# 1. Install HTTPS VPN with GOST provider
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go build -tags gost -o https-vpn ./cmd/https-vpn
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# 2. Configure with GOST certificates
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https-vpn init -crypto ru
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# Edit config.json with GOST cert paths
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# 3. Deploy
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https-vpn run -c config.json
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```
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**Result:** Bank is compliant in **hours**, not months. Same infrastructure, same management panels, just a different crypto module.
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---
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## Getting Started
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### 1. Server Setup (3 steps)
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```bash
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# Step 1: Build (US crypto by default)
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go build -o https-vpn ./cmd/https-vpn
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# Step 2: Generate config
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./https-vpn init -crypto us
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# Step 3: Edit config.json with your certificate paths, then:
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./https-vpn run -c config.json
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```
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### 2. Client Setup
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```bash
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# Connect to server (creates local SOCKS5 proxy on port 1080)
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./https-vpn client -s your-server.com:443 -l 127.0.0.1:1080
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# Configure browser/system to use SOCKS5 proxy at 127.0.0.1:1080
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```
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### 3. Verify
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```bash
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# Check your IP (should show server IP)
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curl --socks5 127.0.0.1:1080 https://api.ipify.org
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# Check traffic looks like HTTPS (use Wireshark/tcpdump)
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# You'll see: TLS 1.3 + HTTP/2 CONNECT (indistinguishable from browser)
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```
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---
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## What's Next
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### Phase 1 (Current) ✅
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- [x] US/NIST crypto (AES-GCM)
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- [x] HTTP/2 CONNECT server/client
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- [x] xray-compatible API
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- [x] CLI and examples
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- [x] 14 automated tests
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### Phase 2 (Q2 2026)
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- [ ] Russian GOST provider
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- [ ] Chinese SM provider
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- [ ] Integration with 3x-ui panel
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- [ ] Integration with marzban panel
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### Phase 3 (Q3 2026)
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- [ ] EU Brainpool provider
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- [ ] Japanese Camellia provider
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- [ ] Korean SEED provider
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- [ ] Mobile clients (iOS/Android)
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---
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## Technical Details (For the Curious)
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| Metric | Value |
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|--------|-------|
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| Core LOC | ~700 |
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| xray-core reduction | 143x smaller |
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| Certification scope | Core only (~700 LOC) |
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| Crypto modules | Isolated, separately certified |
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| Transport | HTTP/2 over TLS 1.3 |
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| DPI resistance | **Undetectable** (same as browser) |
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| Latency overhead | <5ms |
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| Throughput | 90%+ of raw TLS |
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---
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## Contact & Support
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**For enterprises:** Custom crypto provider development, certification support, and priority assistance available.
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**For integrators:** Full API compatibility with xray-core. Existing panels work out of the box.
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**For auditors:** Clean, well-documented codebase ready for security review.
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---
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> **Bottom line:** HTTPS VPN gives you regulatory compliance without detection risk, certification affordability, and zero infrastructure disruption. It's not a workaround — it's **the standard HTTPS protocol**, working exactly as designed.

‎cmd/https-vpn/main.go‎

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// Command https-vpn is a lightweight VPN using HTTP/2 CONNECT over TLS.
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package main
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import (
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"flag"
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"github.com/nativemind/https-vpn/core"
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"github.com/nativemind/https-vpn/infra/conf"
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)
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const version = "0.1.0-dev"
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func main() {
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// Define commands
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runCmd := flag.NewFlagSet("run", flag.ExitOnError)
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runConfig := runCmd.String("c", "config.json", "Path to config file")
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initCmd := flag.NewFlagSet("init", flag.ExitOnError)
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initCrypto := initCmd.String("crypto", "us", "Crypto provider (us, ru, cn)")
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versionCmd := flag.NewFlagSet("version", flag.ExitOnError)
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// Parse top-level command
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if len(os.Args) < 2 {
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printUsage()
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os.Exit(1)
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}
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switch os.Args[1] {
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case "run":
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runCmd.Parse(os.Args[2:])
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runServer(*runConfig)
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case "init":
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initCmd.Parse(os.Args[2:])
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initConfig(*initCrypto)
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case "version":
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versionCmd.Parse(os.Args[2:])
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fmt.Printf("https-vpn %s\n", version)
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case "help", "-h", "--help":
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printUsage()
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default:
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fmt.Fprintf(os.Stderr, "Unknown command: %s\n", os.Args[1])
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printUsage()
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os.Exit(1)
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}
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}
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func printUsage() {
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fmt.Println(`https-vpn - Lightweight VPN over HTTP/2
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Usage:
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https-vpn <command> [options]
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Commands:
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run Run HTTPS VPN server
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init Initialize configuration file
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version Show version
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help Show this help message
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Examples:
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https-vpn init -crypto us
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https-vpn run -c config.json
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https-vpn version`)
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}
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func runServer(configPath string) {
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// Load config
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cfg, err := conf.LoadConfig(configPath)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to load config: %v\n", err)
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os.Exit(1)
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}
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// Create instance
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instance, err := core.New(cfg)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create instance: %v\n", err)
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os.Exit(1)
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}
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// Start instance
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if err := instance.Start(); err != nil {
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fmt.Fprintf(os.Stderr, "Failed to start: %v\n", err)
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os.Exit(1)
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}
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fmt.Printf("HTTPS VPN server started\n")
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// Wait for shutdown signal
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
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<-sigChan
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fmt.Println("\nShutting down...")
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if err := instance.Close(); err != nil {
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fmt.Fprintf(os.Stderr, "Shutdown error: %v\n", err)
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}
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}
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func initConfig(cryptoProvider string) {
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cfg := conf.DefaultConfig()
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cfg.Inbounds[0].StreamSettings.TLSSettings.CryptoProvider = cryptoProvider
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// Check if config already exists
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if _, err := os.Stat("config.json"); err == nil {
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fmt.Fprintf(os.Stderr, "config.json already exists\n")
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os.Exit(1)
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}
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if err := conf.SaveConfig("config.json", cfg); err != nil {
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fmt.Fprintf(os.Stderr, "Failed to save config: %v\n", err)
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os.Exit(1)
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}
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fmt.Println("Created config.json")
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fmt.Println("Edit the config file with your certificate paths, then run:")
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fmt.Println(" https-vpn run -c config.json")
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}

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