whoami

Tiny Go webserver that prints OS information and HTTP request to output.

Usage

Paths

/[?wait=d]

Returns the whoami information (request and network information).

The optional wait query parameter can be provided to tell the server to wait before sending the response. The duration is expected in Go's time.Duration format (e.g. /?wait=100ms to wait 100 milliseconds).

The optional env query parameter can be set to true to add the environment variables to the response.

/api

Returns the whoami information (and some extra information) as JSON.

The optional env query parameter can be set to true to add the environment variables to the response.

/bench

Always return the same response (1).

/data?size=n[&unit=u]

Creates a response with a size n.

The unit of measure, if specified, accepts the following values: KB, MB, GB, TB (optional, default: bytes).

/echo

WebSocket echo.

/health

Heath check.

• GET, HEAD, ...: returns a response with the status code defined by the POST
• POST: changes the status code of the GET (HEAD, ...) response.

Flags

Flag	Env var	Description
cert		Give me a certificate.
key		Give me a key.
cacert		Give me a CA chain, enforces mutual TLS
port	WHOAMI_PORT_NUMBER	Give me a port number. (default: 80)
name	WHOAMI_NAME	Give me a name.
verbose		Enable verbose logging.

Examples

$ docker run -d -P --name iamfoo traefik/whoami

$ docker inspect --format '{{ .NetworkSettings.Ports }}'  iamfoo
map[80/tcp:[{0.0.0.0 32769}]]

$ curl "http://0.0.0.0:32769"
Hostname :  6e0030e67d6a
IP :  127.0.0.1
IP :  ::1
IP :  172.17.0.27
IP :  fe80::42:acff:fe11:1b
GET / HTTP/1.1
Host: 0.0.0.0:32769
User-Agent: curl/7.35.0
Accept: */*

# updates health check status
$ curl -X POST -d '500' http://localhost:80/health

# calls the health check
$ curl -v http://localhost:80/health
*   Trying ::1:80...
* TCP_NODELAY set
* Connected to localhost (::1) port 80 (#0)
> GET /health HTTP/1.1
> Host: localhost:80
> User-Agent: curl/7.65.3
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 500 Internal Server Error
< Date: Mon, 16 Sep 2019 22:52:40 GMT
< Content-Length: 0

docker run -d -P -v ./certs:/certs --name iamfoo traefik/whoami --cert /certs/example.cert --key /certs/example.key

version: '3.9'

services:
  whoami:
    image: traefik/whoami
    command:
       # It tells whoami to start listening on 2001 instead of 80
       - --port=2001
       - --name=iamfoo