8000 Error in post_writer: Server disconnected without sending a response. · Issue #906 · modelcontextprotocol/python-sdk · GitHub
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Error in post_writer: Server disconnected without sending a response. #906
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@WuxySZ

Description

@WuxySZ

Error in post_writer: Server disconnected without sending a response.

call_tool -> wait result
but report error , Error in post_writer: Server disconnected without sending a response.
and call_tool not return or exception!!!

code:
logging.info(f"call_tool > s {self.url} {tool_name} {params}")
if not self.is_connected:
return None
try:
result = await self.session.call_tool(tool_name, params)
logging.info(f"call_tool >>> e {self.url} {tool_name}")
return result
except Exception as e:
logging.error(f"call_tool >>> error {self.url} {tool_name}: {e}")
return None

log:
06/09/2025 17:32:25 PM - 10832 - INFO call_tool > s http://192.168.22.143:38088/sse inject_event {'sn': 'ITSL0102W0001230201000042', 'type': '3', 'content': '{"__name": "itee.js.switch_scene", "value": 7}'}
06/09/2025 17:32:25 PM - 10832 - ERROR - Error in post_writer: Server disconnected without sending a response.

call_tool is stuck, I hope to receive an exception or error return

thanks!

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