# How can I use Gradio websocket API **URL:** **Author:** ![RockmanYang](https://avatars.discourse-cdn.com/v4/letter/r/f9ae1b/32.png) [@RockmanYang](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FRockmanYang)%5C **Post date:** [June 28, 2023, 5:47am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fhow-can-i-use-gradio-websocket-api%2F44789%2F1 "2023-06-28T05:47:54Z") I make a Android App with JAVA. I can’t use the Python or JS Gradio API. Then, I have called Gradio API with REST. It is work ok if process (file) is short time. But It will disconnect if HTTP timeout when processing big file. Then, I try to use the websocket API(undocument) to connect the Gradio , I refer the link [https://prog.world/artificial-artist-google-from-text-to-img-world/](https://prog.world/artificial-artist-google-from-text-to-img-world/) . It looks work a few days, But it will fail alway after some days. I look the error in spaces’s logs. It will occur when the websocket start to connect, before send any message. I wonder why the server block the connecting? Do I lost some operation? Then , I have use different Android websocket library (AndroidAsync or autobahn-java]) to check it , It looks like the server issue. I want konw anyone meeting the issue? -----------------------------------------------logs--------------------------------------------------------------------- ERROR: Exception in ASGI application Traceback (most recent call last): File “/home/user/.local/lib/python3.10/site-packages/uvicorn/protocols/websockets/websockets\_impl.py”, line 254, in run\_asgi result = await self.app(self.scope, self.asgi\_receive, self.asgi\_send) File “/home/user/.local/lib/python3.10/site-packages/uvicorn/middleware/proxy\_headers.py”, line 78, in **call** return await self.app(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/fastapi/applications.py”, line 282, in **call** await super(). **call** (scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/applications.py”, line 122, in **call** await self.middleware\_stack(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/middleware/errors.py”, line 149, in **call** await self.app(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/middleware/cors.py”, line 75, in **call** await self.app(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/middleware/exceptions.py”, line 79, in **call** raise exc File “/home/user/.local/lib/python3.10/site-packages/starlette/middleware/exceptions.py”, line 68, in **call** await self.app(scope, receive, sender) File “/home/user/.local/lib/python3.10/site-packages/fastapi/middleware/asyncexitstack.py”, line 20, in **call** raise e File “/home/user/.local/lib/python3.10/site-packages/fastapi/middleware/asyncexitstack.py”, line 17, in **call** await self.app(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/routing.py”, line 718, in **call** await route.handle(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/routing.py”, line 341, in handle await self.app(scope, receive, send) File “/home/user/.local/lib/python3.10/site-packages/starlette/routing.py”, line 82, in app await func(session) File “/home/user/.local/lib/python3.10/site-packages/fastapi/routing.py”, line 292, in app await dependant.call(\*\*values) File “/home/user/.local/lib/python3.10/site-packages/gradio/routes.py”, line 421, in join\_queue session\_info = await websocket.receive\_json() File “/home/user/.local/lib/python3.10/site-packages/starlette/websockets.py”, line 133, in receive\_json self.\_raise\_on\_disconnect(message) File “/home/user/.local/lib/python3.10/site-packages/starlette/websockets.py”, line 105, in \_raise\_on\_disconnect raise WebSocketDisconnect(message[“code”]) starlette.websockets.WebSocketDisconnect: 1006