VSCode Extension with LSP in C#, how to terminate the LSP dll? - language-server-protocol

Question

I have a very simple extension that loads a DLL that will contain my LSP project.
namespace SimpleLsp
{
class Program
{
static async Task Main(string[] args)
{
var server = await OmniSharp.Extensions.LanguageServer.Server.LanguageServer
.From(
options => options
.WithInput(Console.OpenStandardInput())
.WithOutput(Console.OpenStandardOutput())
).ConfigureAwait(false);
await server.WaitForExit;
}
}
}
and the TypeScript extension
import * as vscode from 'vscode';
import path = require('path');
import { workspace } from 'vscode';
import {
LanguageClient,
LanguageClientOptions,
ServerOptions,
TransportKind,
} from "vscode-languageclient/node";
let client: LanguageClient;
export function activate(context: vscode.ExtensionContext) {
console.log('Congratulations, your extension "simplelspextension" is now active!');
const extensionPath = vscode.extensions.getExtension("PauloAboimPinto.simplelspextension")?.extensionPath as string;
const libsFolder = path.join(extensionPath, "libs");
const dllPath = path.join(libsFolder, "simpleLsp.dll");
let serverOptions: ServerOptions = {
run: {
command: "dotnet",
args: [dllPath],
transport: TransportKind.pipe
},
debug: {
command: "dotnet",
args: [dllPath],
transport: TransportKind.pipe,
runtime: ""
}
};
let clientOptions: LanguageClientOptions = {
documentSelector: [
{
pattern: "**/*.xaml",
},
{
pattern: "**/*.axaml",
},
{
pattern: "**/*.csproj",
},
],
synchronize: {
// Notify the server about file changes to '.clientrc files contained in the workspace
fileEvents: workspace.createFileSystemWatcher('**/.axaml')
}
};
client = new LanguageClient(
"simpleLsp",
"Simple Language Server Protocol",
serverOptions,
clientOptions
);
let disposableLsp = client.start();
context.subscriptions.push(disposableLsp);
}
// this method is called when your extension is deactivated
export function deactivate() {
if (!client) {
return undefined;
}
return client.stop();
}
During deactivation I'm sending the stop command to the client, expecting the execution DLL to be terminated, but it's not.
When I close the VSCode I would expect the simpleLsp.dll to be terminated but it's not and I have to terminate it manually.
What I'm missing or doing wrong here?
How I can terminate the execution of the DLL that contains the LSP?
thanks in advance