A stupid HTTP test server.

• Dynamic responses on any path (except /metrics).

The following query string parameters are supported:

• /metrics returns Prometheus metrics.

In addition to the default Prometheus metrics, the following additional metrics are returned:

Requires Go 1.13+ and Go module support.

Build and run:

$ make
$ ./dummkopf

Get help:

$ ./dummkopf -help

Return a 200 status with no delay:

$ curl localhost:9000

Return a 502 status with a 50 ms delay:

$ curl 'localhost:9000/?status=502:100&delay=50ms:100'

Return a 200 status 75% of the time and a 502 status 25% of the time, with an 80% chance of a 25 ms delay and a 20% chance of a 200 ms delay:

$ curl 'localhost:9000/?status=502:25&delay=25ms:80,200ms:20'

Beat it up!

$ fortio load -n 1000 -qps 0 -c 10 -allow-initial-errors -jitter 'localhost:9000/?status=401:3,500:10&delay=50ms:50,100ms:25,250ms:10,0.5s:10,1s:5'

Return Prometheus metrics:

$ curl localhost:9000/metrics