ModuleNotFoundError Exception raised when enabling SSE transport

[kellyjonbrazil]

When running multi_ssh_mcp.py with MCP_TRANSPORT=sse a ModuleNotFoundError exception is raised:

# MCP_TRANSPORT=sse MCP_HOST=0.0.0.0 MCP_PORT=30040 python multi_ssh_mcp.py 
INFO:ssh-mcp-server:Loaded 1 server configurations
INFO:ssh-mcp-server:Starting FastMCP SSH Server with config: /srv/multi-ssh-mcp-1/servers.json
INFO:ssh-mcp-server:Loaded 1 server(s): linux-client-1
Traceback (most recent call last):
  File "/srv/multi-ssh-mcp-1/multi_ssh_mcp.py", line 775, in <module>
    main()
    ~~~~^^
  File "/srv/multi-ssh-mcp-1/multi_ssh_mcp.py", line 760, in main
    from fastmcp.sse import create_sse_transport
ModuleNotFoundError: No module named 'fastmcp.sse'

# pip show fastmcp
Name: fastmcp
Version: 2.12.4
Summary: The fast, Pythonic way to build MCP servers and clients.
Home-page: https://gofastmcp.com
Author: Jeremiah Lowin
Author-email: 
License-Expression: Apache-2.0
Location: /srv/multi-ssh-mcp-1/.venv/lib/python3.13/site-packages
Requires: authlib, cyclopts, exceptiongroup, httpx, mcp, openapi-core, openapi-pydantic, pydantic, pyperclip, python-dotenv, rich
Required-by: 

It looks like SSE support may be changed in the version of fastmcp that got downloaded with pip against the requirements.txt file. Also, it looks like newer versions of fastmcp now support http-streamable, so it might be nice to add that transport method since sse is deprecated.

I tried downgrading fastmcp to various versions all the way down to v0.1.0 but I still got the same Exception.

[kellyjonbrazil]

Added a quick and dirty fix here. I implemented Streamable HTTP and the fix should also fix SSE transport, though I have not tested SSE. Streamable HTTP seems to work ok, though there is no authentication in this patch, so use only for dev/test[0].

#3

[0] I am using nginx to proxy to the mcp server to provide SSL encryption. I'm planning to use a simple nginx configuration to add a bearer token requirement to the http requests as well

[kellyjonbrazil]

I was also able to add simple token authentication in the PR.