Create http server listening on unix sockets and systemd socket activated fds

Quick Usage

go get go.balki.me/anyhttp

Just replace http.ListenAndServe with anyhttp.ListenAndServe.

- http.ListenAndServe(addr, h)
+ anyhttp.ListenAndServe(addr, h)

Address Syntax

Unix socket

Syntax

unix?path=<socket_path>&mode=<socket file mode>&remove_existing=<true|false>

Examples

unix?path=relative/path.sock
unix?path=/var/run/app/absolutepath.sock
unix?path=/run/app.sock&mode=600&remove_existing=false

option	description	default
path	path to unix socket	Required
mode	socket file mode	666
remove_existing	Whether to remove existing socket file or fail	true

Systemd Socket activated fd:

Syntax

sysd?idx=<fd index>&name=<fd name>&check_pid=<true|false>&unset_env=<true|false>&idle_timeout=<duration>

Only one of idx or name has to be set

Examples:

# First (or only) socket fd passed to app
sysd?idx=0

# Socket with FileDescriptorName
sysd?name=myapp

# Using default name and auto shutdown if no requests received in last 30 minutes
sysd?name=myapp.socket&idle_timeout=30m

option	description	default
name	Name configured via FileDescriptorName or socket file name	Required
idx	FD Index. Actual fd num will be 3 + idx	Required
idle_timeout	time to wait before shutdown. syntax	no auto shutdown
check_pid	Check process PID matches LISTEN_PID	true
unset_env	Unsets the LISTEN* environment variables, so they don't get passed to any child processes	true

TCP

If the address is not one of above, it is assumed to be tcp and passed to http.ListenAndServe.

Examples:

:http
:8888
127.0.0.1:8080

Documentation

https://pkg.go.dev/go.balki.me/anyhttp

Related links

• https://gist.github.com/teknoraver/5ffacb8757330715bcbcc90e6d46ac74#file-unixhttpd-go
• https://github.com/coreos/go-systemd/tree/main/activation