SNI Proxy

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On the record

Configuration

Host routing tables can match exact hostnames or regular expressions, and can use a fallback server when the initial request has no hostname.github.com · read 9 Oct 2026

DNS requirement

Hostname and wildcard configuration entries require a build with UDNS; those features are unavailable without it.github.com · read 9 Oct 2026

DNS security note

The README recommends a local caching DNS resolver with UDNS because its single UDP socket makes queries relatively easy to spoof.github.com · read 9 Oct 2026

HTTPS routing

It supports name-based HTTPS proxying without decrypting traffic and requires no keys or certificates on the proxy machine.github.com · read 9 Oct 2026

License

The repository identifies its license as BSD-2-Clause.github.com · read 9 Oct 2026

Listeners

A single instance can use multiple listening sockets.github.com · read 9 Oct 2026

Network support

It supports IPv4, IPv6, and Unix domain sockets for backend servers and listeners.github.com · read 9 Oct 2026

Project status

The maintainer marked the project deprecated on 2023-12-13, citing newer alternatives and limitations with HTTP/2 and HTTP/3.github.com · read 9 Oct 2026

Protocols

It supports TLS and HTTP, but the maintainer says it does not support HTTP/2 hostname multiplexing or HTTP/3 over QUIC.github.com · read 9 Oct 2026

Proxy protocol

It supports the HAProxy proxy protocol to pass the original source address to backend servers.github.com · read 9 Oct 2026

Purpose

SNI Proxy routes incoming HTTP and TLS connections using the hostname in the initial request of a TCP session.github.com · read 9 Oct 2026

Support

The maintainer says they will monitor issues and email requests, but users should not expect a response unless the issue is a significant security or reliability problem.github.com · read 9 Oct 2026

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