Allow unverified SSL connection

README.md

@@ -11,6 +11,7 @@ Cloudflare DynDNS Updater
 Flags:
   --help                   Show context-sensitive help (also try --help-long and --help-man).
   --ip-address=IP-ADDRESS  Skip resolving external IP and use provided IP
+  --no-verify              Don't verify ssl certificates
   --cf-email=CF-EMAIL      Cloudflare Email
   --cf-api-key=CF-API-KEY  Cloudflare API key
   --cf-zone-id=CF-ZONE-ID  Cloudflare Zone ID

ip.go

@@ -23,21 +23,15 @@ func (f *FakeIPService) GetExternalIP() (net.IP, error) {
 }
 
 type IpifyIPService struct {
-	httpClient *http.Client
-}
-
-func NewIpifyIPService() *IpifyIPService {
-	return &IpifyIPService{
-		httpClient: &http.Client{},
-	}
+	HttpClient *http.Client
 }
 
 type IpifyAPIResponse struct {
 	IP string
 }
 
 func (i *IpifyIPService) GetExternalIP() (net.IP, error) {
-	r, err := i.httpClient.Get("https://api.ipify.org?format=json")
+	r, err := i.HttpClient.Get("https://api.ipify.org?format=json")
 	if err != nil {
 		return nil, err
 	}

main.go

@@ -6,6 +6,8 @@ import (
 
 	"github.com/Sirupsen/logrus"
 	"gopkg.in/alecthomas/kingpin.v2"
+	"net/http"
+	"crypto/tls"
 )
 
 var log = logrus.New()
@@ -15,6 +17,7 @@ func main() {
 		app = kingpin.New("cf-ddns", "Cloudflare DynDNS Updater")
 
 		ipAddress = app.Flag("ip-address", "Skip resolving external IP and use provided IP").String()
+		noVerify  = app.Flag("no-verify", "Don't verify ssl certificates").Bool()
 
 		cfEmail  = app.Flag("cf-email", "Cloudflare Email").Required().String()
 		cfApiKey = app.Flag("cf-api-key", "Cloudflare API key").Required().String()
@@ -33,7 +36,12 @@ func main() {
 			fakeIp: net.ParseIP(*ipAddress),
 		}
 	} else {
-		ip = NewIpifyIPService()
+		httpClient := &http.Client{
+			Transport: &http.Transport{
+				TLSClientConfig: &tls.Config{InsecureSkipVerify: *noVerify},
+			},
+		}
+		ip = &IpifyIPService{HttpClient: httpClient}
 	}
 
 	if dns, err = NewCFDNSUpdater(*cfZoneId, *cfApiKey, *cfEmail, log.WithField("component", "cf-dns-updater")); err != nil {