AutoCompletions aren't working, if the kernel is busy in interacting with some server at the same time!!

[ShanmukhEstrella]

Description

I am having developing my custom kernel, In code autocompletions, I have a feature that in do_complete function for one of the case, the kernel have to interact with one of the API(server is running on my local host) and the datafetched from the server will be shown as suggestions. But the TAB autocompletion isn't working in such cases, it is fetching data, but not getting displayed as suggestions.
I feel that kernel doing some other job(interacting with the API) whenever I hit TAB is suppresing my suggestions to display in my return.
Any help will be appreciated.

[krassowski]

jupyterlab-lsp supports completions via LSP. This has nothing to do with the kernel completions. Kernel completions could be fetched even if kernel is busy via subhshell or control channel but this is no currently implemented. If you wish to use jupyter-lsp with your kernels you need a language server.