[fpc-pascal] JSON RPC send server request to client

[Hairy Pixels]

> On Oct 3, 2022, at 10:48 PM, Michael Van Canneyt via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
> FPC's JSON-RPC is designed to be used using HTTP(s) transport only, i.e.
> synchronous request and answer.
> 
> Hence Ryan's failure to achieve what he wants to do.
> 
> But if changes need to be made to make it usable over other transports, then I am open for suggestions. With the new support for websockets in FPC, this seems like a good time to review the architecture.

In my experience making a Pascal language server using LSP (https://microsoft.github.io/language-server-protocol/)l here are top issues I’ve had:

1) As mentioned the server can’t send messages to the client or receive their responses.
2) LSP has various “any” types which aren’t streamed currently. If TJSONData, TJSONArray etc.. types were streamed this would be good enough probably.
3) A minor issue is I wish dynamic arrays were streamed instead of the TCollection types. They are easier to use and manage their own memory which is nice.

Regards,
	Ryan Joseph