/hostsplitter

Golang HTTP reverse proxy which splits traffic based on the Host header

Primary LanguageGoMIT LicenseMIT

HostSplitter

HostSplitter is an HTTP reverse proxy and load balancer that distributes requests to an arbitrary amount of sites based on the Host header.

Motivation

I commonly run into an issue developing small golang websites: I want to use the same IP address for many sites that aren't large enough to justify their own VPS.

Site files

HostSplitter will look for site files by default in "/etc/hostsplitter/". HostSplitter will only read files with the .json extension.

A each site file should look like

{
	"hostnames": [
		"ammar.io",
		"www.ammar.io"
	],
	"backends": [
		"127.0.0.1:9000"
	],
	"secret": "puppies1234"
}

The "secret" field is passed along with every request to that site in the X-Hostsplitter-Secret header. This is intended to be checked before trusting the passed along IP.

Real IP

The original requester's IP is located in the X-Forwarded-For header.

Reloading

HostSplitter provides 0 downtime reload functionality via SIGUSR1. E.g

pkill -10 hostsplitter