Remove prefer sse stream#44
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This commit addresses concerns regarding the utility of `AbstractTransport` and `TransportInterface`.
Key changes:
- I removed unused utility methods (`encodeMessage`, `decodeMessage`) and constant (`MAX_MESSAGE_SIZE`) from `AbstractTransport`.
- I removed the default `log()` implementation from `AbstractTransport`.
- Based on your feedback and the minimal remaining functionality in `AbstractTransport` (only a default `preferSseStream` method), `AbstractTransport.php` has been removed entirely.
- `StdioTransport` and `HttpTransport` now directly implement `TransportInterface`.
- `StdioTransport` implements `preferSseStream` as a no-op. Its specific `log()` method for STDERR output is now a direct public method, not part of the interface.
- `HttpTransport` implements `preferSseStream`.
- The `log()` method declaration was removed from `TransportInterface` as it was not called polymorphically by the `Server` and `HttpTransport` did not require it. This simplifies the interface for `HttpTransport`.
These changes streamline the transport hierarchy, remove dead code, and clarify the roles of the transport components, while ensuring all existing tests and linting checks pass.
The preferSseStream method was defined in TransportInterface and implemented as a no-op in HttpTransport, StdioTransport, and the MockTransport. Codebase analysis confirmed that this method was not called anywhere, nor was it part of the documented external API in README.md or examples. The HttpTransport currently does not support Server-Sent Events (SSE), and the MCP specification (2025-03-26) makes SSE an optional feature for servers. As the method provided no functionality towards current or planned SSE capabilities and was unused, it has been removed to simplify the interface and reduce potential confusion. This change involved: - Removing the method definition from TransportInterface. - Removing the implementations from HttpTransport, StdioTransport, and MockTransport. - Verifying that all tests and linters pass after the removal.
🧪 Test Results SummaryPHPUnit Tests✅ All tests passed! Details: OK (232 tests, 939 assertions)
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