feat(psycopg): add support for Windows via TCP loopback proxy - #1471
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kgala2 wants to merge 2 commits into
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feat(psycopg): add support for Windows via TCP loopback proxy#1471kgala2 wants to merge 2 commits into
kgala2 wants to merge 2 commits into
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kgala2
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August 27, 2026 23:56
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Description
Adds Windows OS support for the
psycopg(v3) database driver in the Cloud SQL Python Connector.Context & Implementation
psycopg(vialibpq) does not support Unix domain sockets on Windows. When running on Windows (platform.system() == "Windows"), the connector creates a local TCP loopback listener on127.0.0.1with an OS-allocated ephemeral port (port=0), passeshost="127.0.0.1", port=ephemeral_porttopsycopg.connect(), and proxies data over the established TLS connection.AF_UNIX) approach in a user-isolated temporary directory (tempfile.mkdtemp()).not hasattr(socket, "AF_UNIX")test skips across unit and system tests.mockable_socketpair()to dynamically use the socket family (s1.family) so tests execute cleanly on both Windows (AF_INET) and POSIX (AF_UNIX).test_connect_wrapper_windowsverifying the Windows TCP loopback path and port assignment.google.cloud.sql.connector.psycopg.Testing
pytest tests/unit/test_psycopg.py --cov=google.cloud.sql.connector.psycopg(100% coverage, 24/24 tests passing)pytest tests/unit/(197/197 unit tests passing)ruff checkandruff formatpassed.