# Better exception handling in StdioClientTransport
Refactor `McpException` for improved handling with convenience
constructors and enhanced exception wrapping logic in
`StdioClientTransport`. Update tests to use `kotest` matchers and add
JUnit parameterized tests for exception handling.
## Motivation and Context
#442 follow up
## How Has This Been Tested?
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tested? -->
## Breaking Changes
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## Types of changes
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the boxes that apply: -->
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
## Checklist
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that apply. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed
## Additional context
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