return the entire http response using a method

hcloud/client.go

@@ -373,7 +373,7 @@ func errorFromResponse(resp *http.Response, body []byte) error {
 	}
 
 	hcErr := ErrorFromSchema(respBody.Error)
-	hcErr.HTTPStatusCode = resp.StatusCode
+	hcErr.response = resp
 	return hcErr
 }
 

hcloud/client_test.go

@@ -85,8 +85,8 @@ func TestClientError(t *testing.T) {
 	if apiError.Message != "An error occurred" {
 		t.Errorf("unexpected error message: %q", apiError.Message)
 	}
-	if apiError.HTTPStatusCode != http.StatusUnprocessableEntity {
-		t.Errorf("unexpected http status code: %q", apiError.HTTPStatusCode)
+	if apiError.Response().StatusCode != http.StatusUnprocessableEntity {
+		t.Errorf("unexpected http status code: %q", apiError.Response().StatusCode)
 	}
 }
 

hcloud/error.go

@@ -3,6 +3,7 @@ package hcloud
 import (
 	"fmt"
 	"net"
+	"net/http"
 )
 
 // ErrorCode represents an error code returned from the API.
@@ -94,15 +95,19 @@ type Error struct {
 	Code    ErrorCode
 	Message string
 	Details interface{}
-	// HTTPStatusCode is the status code of the response that included the error.
-	// It can be converted to a user readable string using net/http.StatusText().
-	HTTPStatusCode int
+
+	response *http.Response
 }
 
 func (e Error) Error() string {
 	return fmt.Sprintf("%s (%s)", e.Message, e.Code)
 }
 
+// Response returns the error underlying HTTP response.
+func (e Error) Response() *http.Response {
+	return e.response
+}
+
 // ErrorDetailsInvalidInput contains the details of an 'invalid_input' error.
 type ErrorDetailsInvalidInput struct {
 	Fields []ErrorDetailsInvalidInputField