Added support for http client configuration via command arguments

util/http.go

@@ -0,0 +1,44 @@
+package util
+
+import (
+	"crypto/tls"
+	"fmt"
+	"net/http"
+
+	"github.com/spf13/viper"
+)
+
+func GetClientCertificate() (tls.Certificate, error) {
+	cert := viper.GetString("tlsClientCert")
+	certExists := cert != ""
+	key := viper.GetString("tlsClientPrivateKey")
+	keyExists := key != ""
+	if !certExists && !keyExists {
+		return tls.Certificate{}, nil
+	}
+	if certExists && !keyExists {
+		return tls.Certificate{}, fmt.Errorf("Client TLS private key is empty, but client TLS cert was sent.")
+	}
+	if !certExists && keyExists {
+		return tls.Certificate{}, fmt.Errorf("Client TLS cert is empty, but client TLS private key was sent.")
+	}
+	return tls.LoadX509KeyPair("client.cert", "client-key.pem")
+}
+
+func GetHttpClient() (*http.Client, error) {
+	tlsSkipVerify := viper.GetBool("tlsSkipVerify")
+	cert, err := GetClientCertificate()
+	if err != nil {
+		return nil, err
+	}
+	httpClient := http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{
+				Certificates:       []tls.Certificate{cert},
+				InsecureSkipVerify: tlsSkipVerify,
+			},
+		},
+	}
+
+	return &httpClient, nil
+}