app can only be served from the root path

[pmeier]

Running uvicorn test:app works fine. This serves the app at the root path, i.e. http://127.0.0.1:8000.

When trying to serve anywhere else, e.g. by doing

diff --git a/test.py b/test.py
index 8efa324..a6b4d70 100644
--- a/test.py
+++ b/test.py
@@ -37,7 +37,7 @@ def panel_app(doc):
 handler = FunctionHandler(panel_app)
 application = Application(handler)
 
-app = BokehFastAPI(application).server
+app = BokehFastAPI({"/foo": application}).server
 
 
 @app.get(f"/{COMPONENT_PATH.rstrip('/')}" + "/{path:path}")

the websocket connection is refused:

❯ uvicorn test:app
INFO:     Started server process [40277]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     127.0.0.1:41738 - "GET /foo HTTP/1.1" 200 OK
INFO:     127.0.0.1:41738 - "GET /static/js/bokeh.min.js?v=887e6bace8d80f5c1555c1913f730061c2d73acb83adb7f4ccf2ef02ffc7e5e864f7b1c97db9a4f6643a1431700d65e2686759f5c4bb1ac92631e8b659ceead3 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60760 - "GET /static/js/bokeh-gl.min.js?v=16b01ef75f511f8f198a5482526dda37a8dd2890780e67cfac172b1f7444025a816e31ebaf03be07bd1f1be7530357f039deae1e67bf13e34c7d8621070b9a40 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60788 - "GET /static/extensions/panel/panel.min.js?v=887ec9b15fed2e607213f962c1359031b26af977f91d38dcf009d808f06fe7d7 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60774 - "GET /static/js/bokeh-tables.min.js?v=4ef7c086bf94cc39a83637c54054e783a9c9a0b096d50cf18dce79912cfa413a8b9d4c4a7846124cb93b4fe00ea8007ae98213ba56bd731d081989ac1c17dd81 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60798 - "GET /static/extensions/panel/css/loadingspinner.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60764 - "GET /static/js/bokeh-widgets.min.js?v=896b45817f242212a2758406f43054652a991a1255bba2fdd808e728c9e0bde29c2b7320602f2c24238021e8726d2385b56cf20b60223d610e1cfffad9655cd8 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60798 - "GET /static/extensions/panel/css/listpanel.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60764 - "GET /static/extensions/panel/css/json.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60760 - "GET /static/extensions/panel/css/markdown.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60774 - "GET /static/extensions/panel/css/loading.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60764 - "GET /static/extensions/panel/bundled/theme/default.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60798 - "GET /static/extensions/panel/bundled/material-components-web%407.0.0/dist/material-components-web.min.css HTTP/1.1" 200 OK
INFO:     127.0.0.1:60760 - "GET /static/extensions/panel/bundled/material-components-web%407.0.0/dist/material-components-web.min.js HTTP/1.1" 200 OK
INFO:     127.0.0.1:60774 - "GET /static/extensions/panel/bundled/theme/material_variables.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     127.0.0.1:60788 - "GET /static/extensions/panel/bundled/materialtemplate/material.css?v=1.5.0-a.2 HTTP/1.1" 200 OK
INFO:     ('127.0.0.1', 60808) - "WebSocket /foo/ws" 403
INFO:     connection rejected (403 Forbidden)
INFO:     connection closed
INFO:     127.0.0.1:41738 - "GET /static/extensions/panel/images/apple-touch-icon.png HTTP/1.1" 200 OK
INFO:     127.0.0.1:60788 - "GET /static/extensions/panel/images/favicon.ico HTTP/1.1" 200 OK
^CINFO:     Shutting down
INFO:     Waiting for application shutdown.
INFO:     Application shutdown complete.
INFO:     Finished server process [40277]

Aborted!

In the logs above everything is ok besides

INFO:     ('127.0.0.1', 60808) - "WebSocket /foo/ws" 403
INFO:     connection rejected (403 Forbidden)
INFO:     connection closed