Merge pull request #345 from Neilpang/dev

add retry for temp authz request error

acme.sh

@@ -2282,12 +2282,28 @@ issue() {
       
       _info "Getting new-authz for domain" $d
 
+      _Max_new_authz_retry_times=5
+      _authz_i=0
+      while [ "$_authz_i" -lt "$_Max_new_authz_retry_times" ] ; do
+        _info "Try new-authz for the $_authz_i time."
         if ! _send_signed_request "$API/acme/new-authz" "{\"resource\": \"new-authz\", \"identifier\": {\"type\": \"dns\", \"value\": \"$(_idn "$d")\"}}" ; then
           _err "Can not get domain token."
           _clearup
           _on_issue_err
           return 1
         fi
+        if ! _contains "$response" "An error occurred while processing your request" ; then
+          _info "The new-authz request is ok."
+          break
+        fi
+        _authz_i="$(_math "$_authz_i" + 1)"
+        _info "Sleep $_authz_i to retry."
+        _sleep "$_authz_i"
+      done;
+
+      if [ "$_authz_i" = "$_Max_new_authz_retry_times" ] ; then
+        _debug "new-authz retry reach the max $_Max_new_authz_retry_times times."
+      fi
 
       if [ ! -z "$code" ] && [ ! "$code" = '201' ] ; then
         _err "new-authz error: $response"