mtef deployed in docker can't hit the right localhost #11
Description
If mtef server is deployed in docker, when we do this
mtef similarity analyze --server-urls http://localhost:8080/fetch/mcp,http://localhost:8080/mcp-optimiz
er/mcp --insecure
we get
2025-12-12 10:50:08 [error ] Failed to load tools from MCP server [mcp_tef.services.mcp_loader] error='unhandled errors in a TaskGroup (1 sub-exception)' url=http://localhost:8080/mcp-optimizer/mcp
+ Exception Group Traceback (most recent call last):
| File "/app/.venv/lib/python3.13/site-packages/mcp_tef/services/mcp_loader.py", line 97, in load_tools_from_server
| async with streamablehttp_client(url) as (read, write, _):
| ~~~~~~~~~~~~~~~~~~~~~^^^^^
| File "/usr/local/lib/python3.13/contextlib.py", line 235, in __aexit__
| await self.gen.athrow(value)
| File "/app/.venv/lib/python3.13/site-packages/mcp/client/streamable_http.py", line 596, in streamablehttp_client
| async with anyio.create_task_group() as tg:
| ~~~~~~~~~~~~~~~~~~~~~~~^^
| File "/app/.venv/lib/python3.13/site-packages/anyio/_backends/_asyncio.py", line 783, in __aexit__
| raise BaseExceptionGroup(
| "unhandled errors in a TaskGroup", self._exceptions
| ) from None
| ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
+-+---------------- 1 ----------------
| Traceback (most recent call last):
| File "/app/.venv/lib/python3.13/site-packages/httpx/_transports/default.py", line 101, in map_httpcore_exceptions
| yield
| File "/app/.venv/lib/python3.13/site-packages/httpx/_transports/default.py", line 394, in handle_async_request
| resp = await self._pool.handle_async_request(req)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_async/connection_pool.py", line 256, in handle_async_request
| raise exc from None
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_async/connection_pool.py", line 236, in handle_async_request
| response = await connection.handle_async_request(
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| pool_request.request
| ^^^^^^^^^^^^^^^^^^^^
| )
| ^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_async/connection.py", line 101, in handle_async_request
| raise exc
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_async/connection.py", line 78, in handle_async_request
| stream = await self._connect(request)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_async/connection.py", line 124, in _connect
| stream = await self._network_backend.connect_tcp(**kwargs)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_backends/auto.py", line 31, in connect_tcp
| return await self._backend.connect_tcp(
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ...<5 lines>...
| )
| ^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_backends/anyio.py", line 113, in connect_tcp
| with map_exceptions(exc_map):
| ~~~~~~~~~~~~~~^^^^^^^^^
| File "/usr/local/lib/python3.13/contextlib.py", line 162, in __exit__
| self.gen.throw(value)
| ~~~~~~~~~~~~~~^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpcore/_exceptions.py", line 14, in map_exceptions
| raise to_exc(exc) from exc
| httpcore.ConnectError: All connection attempts failed
|
| The above exception was the direct cause of the following exception:
|
| Traceback (most recent call last):
| File "/app/.venv/lib/python3.13/site-packages/mcp/client/streamable_http.py", line 527, in handle_request_async
| await self._handle_post_request(ctx)
| File "/app/.venv/lib/python3.13/site-packages/mcp/client/streamable_http.py", line 299, in _handle_post_request
| async with ctx.client.stream(
| ~~~~~~~~~~~~~~~~~^
| "POST",
| ^^^^^^^
| ...<2 lines>...
| headers=headers,
| ^^^^^^^^^^^^^^^^
| ) as response:
| ^
| File "/usr/local/lib/python3.13/contextlib.py", line 214, in __aenter__
| return await anext(self.gen)
| ^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_client.py", line 1583, in stream
| response = await self.send(
| ^^^^^^^^^^^^^^^^
| ...<4 lines>...
| )
| ^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_client.py", line 1629, in send
| response = await self._send_handling_auth(
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ...<4 lines>...
| )
| ^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_client.py", line 1657, in _send_handling_auth
| response = await self._send_handling_redirects(
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ...<3 lines>...
| )
| ^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_client.py", line 1694, in _send_handling_redirects
| response = await self._send_single_request(request)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_client.py", line 1730, in _send_single_request
| response = await transport.handle_async_request(request)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_transports/default.py", line 393, in handle_async_request
| with map_httpcore_exceptions():
| ~~~~~~~~~~~~~~~~~~~~~~~^^
| File "/usr/local/lib/python3.13/contextlib.py", line 162, in __exit__
| self.gen.throw(value)
| ~~~~~~~~~~~~~~^^^^^^^
| File "/app/.venv/lib/python3.13/site-packages/httpx/_transports/default.py", line 118, in map_httpcore_exceptions
| raise mapped_exc(message) from exc
| httpx.ConnectError: All connection attempts failed
+------------------------------------
2025-12-12 10:50:08 [warning ] Failed to fetch tools from http://localhost:8080/fetch/mcp: LLM provider 'MCP Server' error: Failed to connect to MCP server at http://localhost:8080/fetch/mcp. The server may not be running or is unreachable. [mcp_tef.services.similarity_service]
2025-12-12 10:50:08 [warning ] Failed to fetch tools from http://localhost:8080/mcp-optimizer/mcp: LLM provider 'MCP Server' error: Failed to connect to MCP server at http://localhost:8080/mcp-optimizer/mcp. The server may not be running or is unreachable. [mcp_tef.services.similarity_service]
This is because the tools are running in k8s and port-forwarded.