Fix Drop to prevent TLS data loss#6825
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youknowone merged 1 commit intoRustPython:mainfrom Jan 21, 2026
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Remove pending_tls_output.clear() from Drop implementation. SSLSocket._real_close() in Python doesn't call shutdown() before closing - it just sets _sslobj = None. This means pending TLS data in the output buffer may not have been flushed to the socket yet. Clearing this buffer in Drop causes data loss, resulting in empty HTTP responses (test_socketserver failure on Windows). The explicit clearing is also unnecessary since all struct fields are automatically freed when the struct is dropped.
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📝 WalkthroughWalkthroughModified the PySSLSocket Drop implementation to remove explicit field clearing for pending_tls_output, write_buffered_len, and shutdown_state. Now only clears the connection explicitly while relying on automatic memory cleanup for other fields. Added explanatory comments about the rationale. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes Possibly related PRs
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Remove pending_tls_output.clear() from Drop implementation.
SSLSocket._real_close() in Python doesn't call shutdown() before closing - it just sets _sslobj = None. This means pending TLS data in the output buffer may not have been flushed to the socket yet. Clearing this buffer in Drop causes data loss, resulting in empty HTTP responses (test_socketserver failure on Windows).
The explicit clearing is also unnecessary since all struct fields are automatically freed when the struct is dropped.
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