Unable to disable ssl validation

[MidnightJava]

EDITED: I'm running the exporter in an isolated environment running version 0.6.0. I connect to my nats server through a reverse proxy that only exposes an https endpoint, but the nats server has a cert signed by a private CA. I don't see an option to disable cert validation, and looking through the code, I see the following comment at collector/colector.go line 272, which I take to refer to the feature I'm looking for:

// TODO: Potentially add TLS config in the transport.

It would be nice to have this, but even the ability to disable cert validation would be a help. I'm not a golang dev, but with a little googling I came up with this change. It works for me, but I don't know if this is the proper way to do it.

This is a diff on the master branch

diff --git a/collector/collector.go b/collector/collector.go
index fb00ad2..9c2e7f9 100644
--- a/collector/collector.go
+++ b/collector/collector.go
@@ -18,6 +18,7 @@ import (
        "encoding/json"
        "io/ioutil"
        "net/http"
+       "crypto/tls"
        "strings"
        "sync"
        "time"
@@ -270,6 +271,7 @@ func (nc *NATSCollector) initMetricsFromServers(namespace string) {
 func newNatsCollector(system, endpoint string, servers []*CollectedServer) prometheus.Collector {
        // TODO:  Potentially add TLS config in the transport.
        tr := &http.Transport{}
+       //Obtained from https://stackoverflow.com/a/12122718/2036650
+       tr.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
        hc := &http.Client{Transport: tr}
        nc := &NATSCollector{
                httpClient: hc,

[MidnightJava]

I did find a workaround that enables me to verify the server cert against my private CA. I just volume-map /etc/pki from the host to the docker container, and the collector apparently uses the trust chains defined in that directory tree. Peviously, I didn't realize it would do this, since there is a way to specify a path to the CA for client connections to the exporter but not for server connections made by the collector.