obezuk/test-sni repository overview

⁠Test HTTP / HTTPS Server

Creates a test server for the purpose of testing HTTP Headers and SNI properties. This is useful for diagnosing differences in SNI / Host Headers which may occur when using Reverse Proxies.

⁠Quick Start

docker run -p 80:3080 -p 443:3443 obezuk/test-sni

⁠Build

• docker build -t test-sni .
• docker run -it -p 3080:3080 -p 3443:3443 test-sni

⁠Response

This server returns a JSON response with the client request headers and SNI property.

Docker image automatically generates a self-signed certificate for example.com.

⁠Example HTTP Response

{"headers":{"host":"127.0.0.1:3080","user-agent":"curl/7.54.0","accept":"*/*"}}

⁠Example HTTPS Response

{"headers":{"host":"foo.com","user-agent":"curl/7.54.0","accept":"*/*"},"servername":"www.example.com"}