QUIC

[!NOTE] This document is partially generated by AI.

QUIC is a modern UDP-based transport layer protocol. It provides low-latency connection establishment (0-RTT) and built-in encryption via TLS 1.3.

Network Support

Network Support

• TCP: Supported (Stream-based).
• UDP: Supported (Datagram-based).

Client Configuration (Outbound)

When using QUIC as an outbound transport, the following fields are available:

Configuration Fields

• host (string): The hostname for the QUIC connection.
• tls: A nested TLS configuration block.
  • enable (bool): (Required) Set to true.
  • servernames (string array): SNI for the QUIC server.

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Server Configuration (Inbound)

yuhaiin can also operate as a QUIC server.

Configuration Fields

• host (string): The address the QUIC server binds to (e.g., 0.0.0.0:443).
• tls: The server’s TLS configuration (certificates and keys).

Example Configuration

Outbound Example

{
  "quic": {
    "host": "quic.server.com",
    "tls": {
      "enable": true,
      "servernames": ["quic.server.com"]
    }
  }
}

Developer Details

Advantages

• Fast Establishment: Reduces round-trips required for handsaking.
• Connection Migration: Allows clients to maintain their connection when changing networks (e.g., from Wi-Fi to mobile data).
• No Head-of-Line Blocking: Streams are independent at the transport layer.

Implementation

yuhaiin uses the quic-go library for its QUIC implementation, found in pkg/net/proxy/quic.