Long running task with streaming gets terminated with "WARNING:asyncio:socket.send() raised exception."

I'm trying to execute some long running task, but every time when it reaches 6 min or 8 min duration it automatically cuts of connection and shows "WARNING:asyncio:socket.send() raised exception." in logs. I tried in locally its working fine, but on deployed version this is happening, I'm using "app.add_async_task()" as well as "app.complete_async_task()", they are getting triggered and its showing in logs, but in between after 6 min or 8 min it starts showing that error. My code looks something like this:

```
import os
import asyncio
from datetime import datetime
from strands import Agent, tool
from strands.models import OpenAIModel
from bedrock_agentcore import BedrockAgentCoreApp

@tool
async def background_task(minutes: int = 15) -> str:
for i in range(minutes):
await asyncio.sleep(60)
return f"Background task completed in ~{minutes} minutes."

model = OpenAIModel(
client_args={"api_key": os.getenv("OPENAI_API_KEY")},
model_id="gpt-5-mini",
reasoning={"effort": "medium"},
text={"verbosity": "low"},
)

agent = Agent(
model=model,
tools=[background_task],
instructions="Call the `background_task` tool for 15 minutes to simulate a long job."
)

app = BedrockAgentCoreApp()

@app.entrypoint
async def agent_invocation(payload):
task_id = None
user_message = payload.get("prompt", "No prompt found in input")
user_message += "\n\nUse background_task for 15 minutes."
stream = agent.stream_async(user_message)
task_id = app.add_async_task("Agent_stream")
try:
async for event in stream:
print(event)
yield event
finally:
if task_id:
app.complete_async_task(task_id)

if __name__ == "__main__":
app.run()
```

Start from the deployed `agent_invocation` entrypoint and inspect the `agent.stream_async`, `app.add_async_task`, and `app.complete_async_task` lifecycle while reproducing a 15-minute task. Compare deployed and local logs around the six-to-eight-minute disconnect; done means the deployed stream completes without the asyncio socket warning and the async task is completed.

Written by the indexing model from the issue text.