Challenge Test Server

The challtestsrv package offers a library that can be used by test code to respond to HTTP-01, DNS-01, and TLS-ALPN-01 ACME challenges. The challtestsrv package can also be used as a DNS server letting developers configure A, AAAA, CNAME, and CAA DNS data for specific hostnames. The DNS server will resolve up to one level of CNAME aliasing for accepted DNS request types.

Important note: The challtestsrv library is for TEST USAGE ONLY. It is trivially insecure, offering no authentication. Only use challtestsrv in a controlled test environment.

For example this package is used by the Boulder load-generator command to manage its own in-process HTTP-01 challenge server.

Usage

Create a challenge server responding to HTTP-01 challenges on ":8888" and DNS-01 challenges on ":9999" and "10.0.0.1:9998":

  import "github.com/letsencrypt/challtestsrv"

  challSrv, err := challtestsrv.New(challtestsrv.Config{
    HTTPOneAddrs: []string{":8888"},
    DNSAddrs: []string{":9999", "10.0.0.1:9998"},
  })
  if err != nil {
    panic(err)
  }

Run the Challenge server and subservers:

  // Start the Challenge server in its own Go routine
  go challSrv.Run()

Add an HTTP-01 response for the token "aaa" and the value "bbb", defer cleaning it up again:

  challSrv.AddHTTPOneChallenge("aaa", "bbb")
  defer challSrv.DeleteHTTPOneChallenge("aaa")

Add a DNS TXT response for the host "_acme-challenge.example.com." and the value "bbb", defer cleaning it up again:

  challSrv.AddDNSTXTRecord("_acme-challenge.example.com.", "bbb")
  defer challSrv.DeleteDNSTXTRecord("_acme-challenge.example.com.")

Get the history of HTTP requests processed by the challenge server for the host "example.com":

requestHistory := challSrv.RequestHistory("example.com", challtestsrv.HTTPRequestEventType)

Clear the history of HTTP requests processed by the challenge server for the host "example.com":

challSrv.ClearRequestHistory("example.com", challtestsrv.HTTPRequestEventType)

Stop the Challenge server and subservers:

  // Shutdown the Challenge server
  challSrv.Shutdown()

For more information on the package API see Godocs and the associated package sourcecode.