René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Tests fail with \"OSError: AF_UNIX path too long\" if TMPDIR path is longer than 107 bytes","articleBody":"The Python test suite has multiple tests on AF_UNIX sockets. They create a temporary socket path. Example with test_socketserver:\r\n\r\n```\r\nreturn tempfile.mktemp(prefix='unix_socket.')\r\n```\r\n\r\nThe problem is that if the temporary directory is too long, creating a socket with this path fails with \"OSError: AF_UNIX path too long\". On Linux, sun_path is 107 bytes.\r\n\r\nWith my PR #93817, TMPDIR becomes something like ``(...)/test_python_157983_æ/test_python_worker_243024_æ_tmpdir/``. For example, the path ``/home/vstinner/python/main/build/test_python_157983_æ/test_python_worker_243024_æ_tmpdir/unix_socket.xxxxxxxx`` is 11 bytes long, longer than the limit of 107 bytes.\r\n\r\nI see different options:\r\n\r\n* Use a relative path\r\n* Create a temporary socket path in the current directory rather than in TMPDIR\r\n* Skip tests if AF_UNIX path is too long","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2022-06-15T11:26:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/93852/cpython/issues/93852"}