Correct redirect for VS Code Server

* Correct redirect for code-server

Author: benz0li

news/changelog-1.3.md

@@ -54,6 +54,10 @@
 
 - Remove chapter number of HTML head title when `number-sections` is `false` (#3304).
 
+## Preview
+
+- Correct redirect for VS Code Server (#3352) (Thank you, @benz0li!)
+
 ## Miscellaneous
 
 - Work around pandoc strict checking of `number-offset` type. ([#3126](https://github.com/quarto-dev/quarto-cli/issues/3126))

src/command/preview/preview.ts

@@ -72,6 +72,8 @@ import {
   isJupyterHubServer,
   isRStudioServer,
   isRStudioWorkbench,
+  isVSCodeServer,
+  vsCodeServerProxyUri,
 } from "../../core/platform.ts";
 import { isJupyterNotebook } from "../../core/jupyter/jupyter.ts";
 import { watchForFileChanges } from "../../core/watch.ts";
@@ -690,6 +692,9 @@ function pdfFileRequestHandler(
       if (new URL(req.url).pathname === "/") {
         const url = isRStudioWorkbench()
           ? await rswURL(port, kPdfJsInitialPath)
+          : isVSCodeServer()
+          ? vsCodeServerProxyUri()!.replace("{{port}}", `${port}`)
+            + kPdfJsInitialPath
           : "/" + kPdfJsInitialPath;
         return Promise.resolve(serveRedirect(url));
       } else {