whoami

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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).

/api

Returns the whoami information as JSON.

/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

GitHub

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