Cannot use local IP url or tunel url

[tuanlv14]

Dear team,
I develop my back-end and it worked well with path: http://127.0.0.1:5050

But when I try to bring my project to other server to deploy at static address in my network, example: 192.168.1.10:5050 --> I tested again and got this issue: 'Unable to find a widgets.json file.' althought I try to test http://192.168.1.10:5050/widgets.json --> It had returned widget json data well.

And then I try to create a tunel for my local server, via https://ubuntu.xxx.net/stock ; I tested https://ubuntu.xxx.net/stock/widgets.json worked well and return exactly data but I got other issue: "Failed to execute 'json' on 'Response': Unexpected token '<', "<!DOCTYPE "... is not valid JSON"

So pls help me fix this issue.

[DidierRLopes]

Hey,

Are you giving CORS access?

E.g. if you are using FastAPI:

...
# Initialize FastAPI application with metadata
app = FastAPI(
    title="Simple Backend",
    description="Simple backend app for OpenBB Workspace",
    version="0.0.1"
)

# Define allowed origins for CORS (Cross-Origin Resource Sharing)
# This restricts which domains can access the API
origins = [
    "https://pro.openbb.co",
]

# Configure CORS middleware to handle cross-origin requests
# This allows the specified origins to make requests to the API
app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],  # Allow all HTTP methods
    allow_headers=["*"],  # Allow all headers
)
...

[tuanlv14]

@DidierRLopes Thank you for your support. But my code already have CORS and everything worked well if I only deploy on my local computer (same machine with openBB pro web app).
The issue only appear in some cases:

Case 1:

• I run openBB on my client: 192.168.1.1
• I deploy backend on my server: 192.168.1.100 in same LAN.
• Then:

1. From my client, if I still call: http://localhost:7777 --> It will call exactly backend from my server, I mean 192.168.1.100:7777/widgets.json --> WELL.
2. From my client, if I still call: http://192.168.1.100:7777 --> It will give my error: 'Unable to find a widgets.json file.'
   See my image to know my issue.

I concern that why I call http://localhost on my client, front end of openBB call to my server well; but when I call directly to my sever IP, the request had been sent by front end did not include request header.

You know that some time, user need to deploy backend on other computer in LAN, so right now, I cannot use directly IP server to call my back end.
Of course, I can use temporary by use http://localhost:7777; but it did not make sense with me.

Case 2
I create a tunel for my back-end with tail scale: I have two options:
1/ I forward my backend at localhost:7777 to tailse scale with DNS, example: https://ubuntu.xxx.net
Then from front end, openBB pro, I call https://ubuntu.xxx.net, it will worked well.

2/ Sometime, I need to modify DNS with sub domain like as: https://ubuntu.xxx.net/vstock
I tested https://ubuntu.xxx.net/vstock/widgets.json --> It worked pefectly.
But when I call https://ubuntu.xxx.net/vstock --> I got the error: "Unable to find a widgets.json file. "
Then I found that even I put https://ubuntu.xxx.net/vstock in 'Integrate your own backend' but the actual request from front-end OpenBB pro always is 'https://ubuntu.xxx.net' NOT 'https://ubuntu.xxx.net/vstock' as I need.
So front end openBB pro will send request to https://ubuntu.xxx.net/widgets.json that was the wrong path. It should call to https://ubuntu.xxx.net/vstock/widgets.json to get my config in back-end root.

I am not sure that this is problem with openBB pro front end or not BUT this is my experience in my user cases.
I hope that your team can study and give me some advice to fix my issues.

Thank in advance.

Refer my CORS:

_ROOT_PATH = Path(file).parent.resolve()

app = FastAPI()

origins = [
"https://pro.openbb.co",
"https://excel.openbb.co",
"http://localhost:1420",
"http://localhost:7777",
"http://192.168.1.100:7777",
"http://192.168.1.100"
]

app.add_middleware(
CORSMiddleware,
allow_origins=origins,
allow_credentials=True,
allow_methods=[""],
allow_headers=[""],
)_

[DidierRLopes]

I think you require to have it at the root, can you try this?

router = Router(path=“/vstock”)
app = FastAPI()
app.include_router(router)

cc @andrewkenreich

[andrewkenreich]

@DidierRLopes Thank you for your support. But my code already have CORS and everything worked well if I only deploy on my local computer (same machine with openBB pro web app). The issue only appear in some cases:

Case 1:

• I run openBB on my client: 192.168.1.1
• I deploy backend on my server: 192.168.1.100 in same LAN.
• Then:

1. From my client, if I still call: http://localhost:7777 --> It will call exactly backend from my server, I mean 192.168.1.100:7777/widgets.json --> WELL.
2. From my client, if I still call: http://192.168.1.100:7777 --> It will give my error: 'Unable to find a widgets.json file.'
   See my image to know my issue.

I concern that why I call http://localhost on my client, front end of openBB call to my server well; but when I call directly to my sever IP, the request had been sent by front end did not include request header.

You know that some time, user need to deploy backend on other computer in LAN, so right now, I cannot use directly IP server to call my back end. Of course, I can use temporary by use http://localhost:7777; but it did not make sense with me.

Case 2 I create a tunel for my back-end with tail scale: I have two options: 1/ I forward my backend at localhost:7777 to tailse scale with DNS, example: ubuntu.xxx.net Then from front end, openBB pro, I call ubuntu.xxx.net, it will worked well.

2/ Sometime, I need to modify DNS with sub domain like as: ubuntu.xxx.net/vstock I tested ubuntu.xxx.net/vstock/widgets.json --> It worked pefectly. But when I call ubuntu.xxx.net/vstock --> I got the error: "Unable to find a widgets.json file. " Then I found that even I put ubuntu.xxx.net/vstock in 'Integrate your own backend' but the actual request from front-end OpenBB pro always is 'ubuntu.xxx.net' NOT 'ubuntu.xxx.net/vstock' as I need. So front end openBB pro will send request to ubuntu.xxx.net/widgets.json that was the wrong path. It should call to ubuntu.xxx.net/vstock/widgets.json to get my config in back-end root.

I am not sure that this is problem with openBB pro front end or not BUT this is my experience in my user cases. I hope that your team can study and give me some advice to fix my issues.

Thank in advance.

Refer my CORS:

_ROOT_PATH = Path(file).parent.resolve()

app = FastAPI()

origins = [ "https://pro.openbb.co", "https://excel.openbb.co", "http://localhost:1420", "http://localhost:7777", "http://192.168.1.100:7777", "http://192.168.1.100" ]

app.add_middleware( CORSMiddleware, allow_origins=origins, allow_credentials=True, allow_methods=[""], allow_headers=[""], )_

hey @tuanlv14

So for your first issue - Can you tell me how you are launching the app?

You probably need to run uvicorn main:app --host 0.0.0.0 --port 7777

Since it seems to only work on localhost - 0.0.0.0 ensures the backend listens to all network interfaces

For case 2 -

You can try what Didier said there - for a full example below

from fastapi import FastAPI, APIRouter

app = FastAPI()
router = APIRouter()

# Example route for widgets.json
@app.get("/widgets.json")
async def get_widgets():
    return {"widgets": "your widgets configuration here"}


@router.get("/test")
async def get_widgets2():
    return {"test": "test"}

# Include router with prefix '/vstock'
app.include_router(router, prefix="/vstock")

We always expect the widgets.json to be at the root - so you can do this and put it at the root and then also include your routes this way.

now this works -

http://localhost:7777/widgets.json

and

http://localhost:7777/vstock/test works as well

[tuanlv14]

Hi @andrewkenreich , thank you for your detail instruction.

1/ Case 1:
Yes, I used: uvicorn main:app --host 0.0.0.0 --port 7777.
Of course, I do not have any problem if I put http://localhost:7777 on OpenBB pro ; it worked well.
My question is why my backend deploy on sever machine (192.168.1.100) but when I put http://192.168.1.100:7777 on openBB, why it failed with message 'Unable to find a widgets.json file'.

2/ Case 2:
I think we have some confusion on my problem.

• If I put ubuntu.xxx.net on open BB, it will call to ubuntu.xxx.net/widgets.json ==> everything worked well.
• But if I put ubuntu.xxx.net/vstock on openBB, the front end always called to ubuntu.xxx.net/widgets.json, NOT ubuntu.xxx.net/vstock/widgets.json ; So I got the error: 'Unable to find a widgets.json file.'.

I understand that due to I mapped http:localhost:7777 to ubuntu.xxx.net/vstock but when I put ubuntu.xxx.net/vstock on openBB pro, I expect that this url will call to ubuntu.xxx.net/vstock/widgets.json to get widgets.json file in root; but actual, it only call to ubuntu.xxx.net/widgets.json ; So that is reason I could not found widgets.json file.

You will ask me why I did not use directly https://ubuntu.xxx.net ? Beacause I had already use DNS=https://ubuntu.xxx.net on my sever for other application (map to other port); so I need change to https://ubuntu.xxx.net/vstock to map to port 7777 for openBB back-end.

I am not sure we have the solution for my cases; but this is quite specific for my usage. So it will not be problem if we do not have perfectly solution.

Thank for all your support.

[andrewkenreich]

@tuanlv14

Ok so we had some internal discussion on this - Right now we expect the backend to be on the root.

A workaround for you could be to do vstocks.unbuntu.xxx

We are discussing the best way to support this though. Sorry it isn't for now.