Warp-over-WebSocket-CDN

Bypass ISP throttling and DPI by tunneling Cloudflare Warp traffic over WebSocket with Host Header spoofing through major CDN networks (CloudFront / Cloudflare / Akamai).

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What It Does

Many ISPs throttle or block VPN traffic using Deep Packet Inspection (DPI). Warp-over-WebSocket-CDN wraps WireGuard UDP inside a WebSocket connection with a spoofed Host header, routing traffic through major CDN edge networks (CloudFront, Cloudflare, or Akamai). To any firewall or DPI system, the traffic looks like a legitimate WebSocket upgrade to a CDN-hosted domain.

Result: Full Cloudflare Warp speed and privacy, even on heavily restricted networks — including campus, corporate, and ISP-level DPI systems.

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Why WebSocket + CDN over plain SNI Tunneling?

Technique	How DPI sees it	Weakness
Raw WireGuard	UDP to known IP:2408	Easily fingerprinted and blocked
TLS/SNI tunnel	TLS to spoofed SNI domain	IP-based blocking still possible; no CDN relay
WebSocket + CDN (this project)	WebSocket upgrade to trusted CDN domain	CDN IP ranges are whitelisted by most ISPs

The CDN relay is the key upgrade: your traffic exits through Cloudflare, AWS CloudFront, or Akamai edge nodes — IP ranges that ISPs almost never block because doing so would break huge portions of the internet.

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Architecture Overview

[Android App]
    └─► WireGuard (Warp+ config)
          └─► Tunnel client (WebSocket encapsulation)
                └─► Host: <CDN-hosted domain> (spoofed Host header)
                      └─► CDN Edge Node (CloudFront / Cloudflare / Akamai)
                            └─► [Your VPS — tunnel server]
                                  └─► Cloudflare Warp endpoint 162.159.192.1:2408

The Host header names a real domain served by the CDN. The CDN routes the connection to your origin VPS. ISP DPI sees only a standard WebSocket handshake to a CDN IP — indistinguishable from normal app traffic.

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Features

Feature	Description
Anti-DPI	WireGuard traffic hidden inside WebSocket frames
CDN Relay	Traffic exits via CloudFront / Cloudflare / Akamai IP ranges (rarely blocked)
Host Header Spoofing	Appears as a WebSocket upgrade to a trusted CDN domain
HTTP/HTTPS support	Works on port 80 (ws://) and port 443 (wss://)
Domain Fronting	CDN routes by Host header — survives SNI-based filtering
Double Encryption	WebSocket TLS layer on top of WireGuard native encryption
No Root Required	Runs entirely in Android user-space
Cloudflare Speed	Preserves Warp/1.1.1.1 performance and DNS privacy

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Requirements

• Android: 7.0 or higher
• VPS: Ubuntu 20.04+, public IP, port 80 and/or 443 open
• CDN: Domain registered and proxied through CloudFront, Cloudflare, or Akamai
• Apps:
• WireGuard for Android (Play Store / F-Droid)
• Tunnel client APK from Releases

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Quick Start

1. CDN Setup

Point a domain (or subdomain) at your VPS IP using CloudFront, Cloudflare proxy, or Akamai. Make sure the CDN passes WebSocket upgrades to your origin.

Cloudflare example:

• DNS A record: tunnel.yourdomain.com → your VPS IP, Proxied (orange cloud)
• SSL/TLS mode: Full
• WebSockets: Enabled (Network tab)

2. Server Setup

chmod +x setup-server.sh && ./setup-server.sh

Configures the WebSocket tunnel server on port 80 (and optionally 443), forwarding decapsulated WireGuard UDP to 162.159.192.1:2408.

3. Android Setup

1. Install WireGuard for Android
2. Install tunnel-client.apk from the Releases page
3. Import warp.conf into WireGuard
4. Configure the tunnel client (see tunnel.conf template in configs/)
5. Start tunnel client first, then enable WireGuard

4. Verify

Visit 1.1.1.1/help — you should see an active Cloudflare Warp connection.

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Host Header Presets

These are real CDN-hosted domains. The Host header tells the CDN which origin to route to; your own domain sits behind the same CDN so routing works correctly.

Host Header Domain	CDN	Use Case
support.appsflyer.com	Cloudflare	Default — general use
d1qq0afxwtfi6m.cloudfront.net	AWS CloudFront	Campus / corporate networks
ms.mw.cloud.front.net	Azure CDN	Microsoft-whitelisted environments
a104-98-96-10.deploy.static.akamaitechnologies.com	Akamai	Enterprise ISPs
zoom.us	Cloudflare	Video-call whitelisted networks

Custom host headers can be set in the tunnel client config file. The domain must resolve to the same CDN you are routing through.

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Traffic Flow (Packet-Level)

Android WireGuard → UDP 127.0.0.1:51820
    ↓
Tunnel client encapsulates in WebSocket frame
    ↓
TCP to CDN IP:80 (or :443)
Host: support.appsflyer.com        ← ISP/DPI sees this
Upgrade: websocket
    ↓
CDN edge node routes to your VPS (by Host header)
    ↓
Tunnel server strips WebSocket framing
    ↓
UDP → 162.159.192.1:2408           ← Cloudflare Warp endpoint

ISP DPI sees: TCP → [CDN IP]:80, Host: support.appsflyer.com, Upgrade: websocket
Actual payload: Encrypted WireGuard frames inside WebSocket binary frames.

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Troubleshooting

Issue	Fix
WebSocket connection refused	Check CDN WebSocket passthrough is enabled; try port 443
301 redirect loop	CDN SSL mode set to "Flexible" — change to "Full"
Frequent drops	Switch Host to a more stable CDN domain (e.g. CloudFront subdomain)
High latency	Choose a CDN with an edge node close to your location; move VPS closer
Tunnel client won't start	Disable WireGuard first; re-grant VPN permissions
ISP still blocking	Try port 443 (wss://); rotate Host header to a different CDN domain
101 Switching Protocols but no traffic	Verify tunnel server UDP forward reaches 162.159.192.1:2408

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Project Structure

warp-over-ws-cdn/
├── README.md
├── ARCHITECTURE.md             ← Detailed architecture & data flow
├── setup-server.sh             ← VPS setup script
├── configs/
│   ├── warp.conf               ← WireGuard config template
│   └── tunnel.conf             ← Tunnel client config template
└── releases/
    └── tunnel-client.apk       ← Bundled Android tunnel client

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Differences from SNI Tunnel Version

	SNI Tunnel	WebSocket + CDN (this project)
Transport	TLS with spoofed SNI	WebSocket with spoofed Host header
Relay	Direct to VPS	Via CDN edge (CloudFront/Cloudflare/Akamai)
IP blocking resistance	Moderate	High (CDN IPs are globally whitelisted)
Port	443	80 or 443
ISP fingerprinting	TLS ClientHello SNI	HTTP Upgrade headers
Setup complexity	Low	Medium (CDN setup required)

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License

Server-side components: MIT License
Tunnel client APK: Proprietary — personal, non-commercial use only

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