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Support Unix Domain Sockets as local-only transport

Open
#415 3 comments 2 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
networking

Research direction

Review pull request #439 and its accompanying test code, then compare the proposed Unix domain socket transport with the existing stdio transport used by the MCP client and server. Done means localhost client-server communication works over Java 17 Unix domain sockets and the provided tests pass.

Written by the indexing model from the issue text.

Description

enhancement waiting for triage

It would be very helpful to use unix domain sockets (supported in Java 17) for localhost MCP Client <-> MCP Server communication.

Currently, stdio transport is used for testing, debugging, and deployment of MCP servers.

Unix domain sockets (UDS) would provide a localhost-only alternative to stdio.

I've provided an implementation in pr #439, along with test code. I'm open to refactoring, for naming consistency additional extensibility, etc.

Dominant language
Java
Stars
3.7k
Forks
1.1k
Avg merge
1d 15h
Merged PRs (30d)
9

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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