VLESS

VLESS is a lightweight, simplified version of VMess. It does not include its own encryption layer and relies on the transport layer (typically TLS) for security.

Network Support

• TCP: Supported natively.
• UDP: Supported via UDP over Stream.
  • NAT Type: Symmetric NAT. Similar to VMess, the current implementation maps one session to one remote destination.

Configuration

VLESS configuration is very minimal:

• Address: The IP or hostname of the server.
• Port: The server port.
• UUID: Your unique user ID for authentication.

Example Configuration

{
  "name": "My VLESS Server",
  "protocols": [
    {
      "simple": {
        "host": "vless.example.com",
        "port": 443
      }
    },
    {
      "tls": {
        "enable": true,
        "servernames": ["vless.example.com"]
      }
    },
    {
      "vless": {
        "uuid": "YOUR-UUID-HERE"
      }
    }
  ]
}

Developer Details

Implementation

VLESS in yuhaiin is implemented as a thin wrapper. Since it has no internal encryption, it must be used with TLS or another secure transport to protect the traffic and the UUID.

Protocol Structure

VLESS sends a 1-byte version (0), followed by the 16-byte UUID, a 1-byte command (1 for TCP, 2 for UDP), and then the destination address and port.