Alex Zhang
Looks like this is not related to APISIX but the handling of CORS in the broswer.
I can't find the explanation about `**` easily. Do you have any materials?
> > Only if `Access-Control-Expose-Headers` is set specially `Foo`, then the foo header can be get. So I said the `**` does not work. > > Looks like that in...
> > > [https://github.com/apache/apisix/blob/master/apisix/plugins/cors.lua#L167-L172](https://github.com/apache/apisix/blob/master/apisix/plugins/cors.lua?rgh-link-date=2022-07-12T09%3A50%3A25Z#L167-L172) > > > > > > when allow-credentials is true, it is not allowed to set other field to `*` > > ok, I get it....
> > when I set client_body_buffer_size: 30m,The same error > > Are you sure your configuration is working? When Apache APISIX was running, check the config item `client_body_buffer_size` in `nginx.conf`....
> > client_body_buffer_size > > I have configuration in config file and it takes effect in nginx.conf > >  > >  So did you still see the related...
Strange. Could you share the APISIX configuration and the steps to reproduce this issue?
> > Strange. Could you share the APISIX configuration and the steps to reproduce this issue? > > `etcd: host: tls: verify: false apisix: node_listen: 80 enable_server_tokens: false admin_key: -...
@moecasts Could you give the reproduce steps? Also, the [proto options](https://apisix.apache.org/docs/apisix/plugins/grpc-transcode/#options-for-pb_option) might be useful for you.
> ### Issue description > when i run ip-restriction single test,always appears below errors。 > [error] 14511#329621: *2310 [lua] config_etcd.lua:600: failed to fetch data from etcd: closed, etcd key: /apisix/upstreams,...