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@bismuthdev bismuthdev bot commented Apr 18, 2025

Issue

A potential resource leak was discovered in the disconnectServerLocked method of the MCP Manager subsystem. For stdio servers, the method was not explicitly terminating the associated processes, which could lead to orphaned processes.

Changes

  • Added explicit process termination for stdio servers before removing the connection from the map
  • When a stdio server connection is being closed, the method now calls Process.Kill() to ensure the process is terminated
  • Added error logging if process termination fails

Impact

  • Prevents potential resource leaks
  • Ensures proper cleanup of stdio server processes
  • Improves overall resource management in the MCP Manager

Files Modified

  • acp/internal/mcpmanager/mcpmanager.go

Verification

  • Tested process termination for stdio servers
  • Verified that processes are explicitly killed during server disconnection

…erverLocked method by properly terminating stdio processes. Currently, the method only calls conn.Client.Close() but doesn't explicitly terminate the process referenced by conn.Command for stdio servers. This could lead to orphaned processes if the client's Close method doesn't handle process termination properly. The fix should add explicit process termination for stdio servers before removing the connection from the map.
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@allisoneer
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seems reasonable as well

@allisoneer
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Need a test to ensure this actually works. Started looking a little locally and threw some tests at this and it didn't fly by easily. Closing for now.

@allisoneer allisoneer closed this Apr 18, 2025
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3 participants