Update lego

vendor/github.com/xenolf/lego/acme/error.go

@@ -10,6 +10,7 @@ import (
 
 const (
 	tosAgreementError = "Must agree to subscriber agreement before any further actions"
+	invalidNonceError = "JWS has invalid anti-replay nonce"
 )
 
 // RemoteError is the base type for all errors specific to the ACME protocol.
@@ -30,6 +31,12 @@ type TOSError struct {
 	RemoteError
 }
 
+// NonceError represents the error which is returned if the
+// nonce sent by the client was not accepted by the server.
+type NonceError struct {
+	RemoteError
+}
+
 type domainError struct {
 	Domain string
 	Error  error
@@ -54,20 +61,17 @@ func (c challengeError) Error() string {
 func handleHTTPError(resp *http.Response) error {
 	var errorDetail RemoteError
 
-	contenType := resp.Header.Get("Content-Type")
-	// try to decode the content as JSON
-	if contenType == "application/json" || contenType == "application/problem+json" {
-		decoder := json.NewDecoder(resp.Body)
-		err := decoder.Decode(&errorDetail)
+	contentType := resp.Header.Get("Content-Type")
+	if contentType == "application/json" || contentType == "application/problem+json" {
+		err := json.NewDecoder(resp.Body).Decode(&errorDetail)
 		if err != nil {
 			return err
 		}
 	} else {
-		detailBytes, err := ioutil.ReadAll(limitReader(resp.Body, 1024*1024))
+		detailBytes, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
 		if err != nil {
 			return err
 		}
-
 		errorDetail.Detail = string(detailBytes)
 	}
 
@@ -78,6 +82,10 @@ func handleHTTPError(resp *http.Response) error {
 		return TOSError{errorDetail}
 	}
 
+	if errorDetail.StatusCode == http.StatusBadRequest && strings.HasPrefix(errorDetail.Detail, invalidNonceError) {
+		return NonceError{errorDetail}
+	}
+
 	return errorDetail
 }