fix: DH-18424: Force websocket connections for 0.37.x+ Core servers (#207)

DH-18424: Force websocket connections for 0.37.x+ Core servers

**Testing**
I tested the following scenarios on my Mac:
* Grizzly with Core+ 0.37.x (can use dev-grizzly2)
* San Luis with Core+ 0.37.x (can use dev-sanluis)
* Community http
* Community https (note `-Dhttp.websockets=true` needs to be set when
starting the server)
Example `START_OPTS -Dhttp.port=444 -Dhttp.websockets=true
-Dssl.identity.type=privatekey
-Dssl.identity.certChainPath=/dev-certs/localhost.crt
-Dssl.identity.privateKeyPath=/dev-certs/localhost.key`. Also
`NODE_EXTRA_CA_CERTS` needs to be set when using self signed SSL certs
(see README).

NOTE: Would be good to test at least the first 2 items on Windows since
the user originally had some Windows specific issues. I don't have a way
to do this since my Windows machine does not have access to the VPN

Author: bmingles

README.md

@@ -37,6 +37,8 @@ Community servers can be configured via the `"deephaven.coreServers"` setting in
 
 ![Community Server Settings](./docs/assets/add-community-server.gif)
 
+#### Self-signed SSL Certificates
+If you are running a Community server with a self-signed SSL certificate, vscode will need to be run in an environment that has the `NODE_EXTRA_CA_CERTS` environment variable set to the path of the cert that was used to sign your cert. Depending on your setup, this could be the server certificate or a CA certificate.
 
 ### Enterprise Servers
 Enterprise servers can be configured via the `"deephaven.enterpriseServers"` setting in `VS Code` user or workspace settings.

package-lock.json

@@ -875,7 +875,7 @@
   },
   "devDependencies": {
     "@deephaven-enterprise/jsapi-types": "^1.20240723.124-beta",
-    "@deephaven/jsapi-types": "^1.0.0-dev0.36.1",
+    "@deephaven/jsapi-types": "^1.0.0-dev0.37.3",
     "@types/node": "22.5.4",
     "@types/vscode": "^1.91.0",
     "@types/ws": "^8.5.10",

package.json

@@ -342,9 +342,11 @@ export class ExtensionController implements Disposable {
       assertDefined(this._coreJsApiCache, 'coreJsApiCache');
       const dhc = await this._coreJsApiCache.get(url);
 
-      const client = new dhc.CoreClient(
-        url.toString()
-      ) as CoreUnauthenticatedClient;
+      const client = new dhc.CoreClient(url.toString(), {
+        // `useWebsockets: true` is needed for 0.37.x servers until we enable
+        // the http2 based gRPC transport DH-18086
+        useWebsockets: true,
+      }) as CoreUnauthenticatedClient;
 
       // Attach a dispose method so that client caches can dispose of the client
       return Object.assign(client, {