Fix error message for statement_timeout and fix flaky test

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Add non-blocking version of PQcancel ×

First at 2022-01-12 15:22:18 by Jelte Fennema <Jelte.Fennema at microsoft.com>
Latest at 2024-11-22 00:37:34 by Tom Lane <tgl at sss.pgh.pa.us>
Latest attachment (reissue-cancel-requests.patch) at 2024-11-21 01:30:54 from Tom Lane <tgl at sss.pgh.pa.us>

    Attachment (reissue-cancel-requests.patch) at 2024-11-21 01:30:54 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (reproduce-postgres_fdw-query_cancel-failure.pathch) at 2024-10-01 12:00:00 from Alexander Lakhin <exclusion at gmail.com> (Patch: Yes)
    Attachment (cancel-request-failures.txt) at 2024-08-30 19:21:25 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: No)
    Attachment (libpqsrv_cancel-debugging.patch) at 2024-08-28 18:00:00 from Alexander Lakhin <exclusion at gmail.com> (Patch: Yes)
    Attachment (strace.log) at 2024-07-17 19:00:00 from Alexander Lakhin <exclusion at gmail.com> (Patch: No)
    Attachment (0001-Split-out-the-query_cancel-test-in-postgres_fdw.patch) at 2024-07-16 15:22:25 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (v4-0001-Make-postgres_fdw-cancel-test-not-flaky-anymore.patch) at 2024-07-10 12:10:55 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v3-0001-Make-postgres_fdw-cancel-test-not-flaky-anymore.patch) at 2024-06-30 22:38:46 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v2-0001-Make-postgres_fdw-cancel-test-not-flaky-anymore.patch) at 2024-06-25 08:24:37 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (postmaster.log.txt) at 2024-06-25 05:00:00 from Alexander Lakhin <exclusion at gmail.com> (Patch: No)
    Attachment (v1-0001-Do-not-reset-statement_timeout-indicator-outside-.patch) at 2024-06-23 22:59:48 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (0001-Make-libpqsrv_cancel-s-return-type-const-char.patch) at 2024-04-04 08:45:33 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (libpqsrv_cancel.patch) at 2024-03-27 15:34:57 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (v37-0001-postgres_fdw-Start-using-new-libpq-cancel-APIs.patch) at 2024-03-22 08:54:29 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v39-0001-postgres_fdw-Start-using-new-libpq-cancel-APIs.patch) at 2024-03-18 18:40:10 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (v38-0001-Use-simple-query-protocol-for-cancel-test.patch) at 2024-03-14 09:51:13 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (repro.diff.txt) at 2024-03-13 19:08:30 from Jacob Champion <jacob.champion at enterprisedb.com> (Patch: Yes)
    Attachment (v37-0001-Hopefully-make-cancel-test-more-reliable.patch) at 2024-03-13 10:04:43 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v36-0001-libpq-Add-encrypted-and-non-blocking-query-cance.patch) at 2024-03-12 15:45:41 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v35-0002-Start-using-new-libpq-cancel-APIs.patch) at 2024-03-12 14:04:21 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v34-0001-libpq-Add-encrypted-and-non-blocking-query-cance.patch) at 2024-03-12 09:19:27 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (v33-0003-libpq-Move-pg_cancel-to-fe-cancel.c.patch) at 2024-03-07 10:11:32 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v32-0001-Add-missing-connection-statuses-to-docs.patch) at 2024-03-06 18:09:35 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (0001-fixup-libpq-Add-encrypted-and-non-blocking-versions-.patch) at 2024-03-06 14:03:20 from Denis Laxalde <denis.laxalde at dalibo.com> (Patch: Yes)
    Attachment (v32-0005-Start-using-new-libpq-cancel-APIs.patch) at 2024-02-14 18:22:06 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v31-0004-libpq-Add-encrypted-and-non-blocking-versions-of.patch) at 2024-02-14 17:20:44 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v30-0003-libpq-Change-some-static-functions-to-extern.patch) at 2024-02-02 14:03:39 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (0001-pgindent.patch.txt) at 2024-02-02 12:19:38 from Alvaro Herrera <alvherre at alvh.no-ip.org> (Patch: Yes)
    Attachment (v29-0004-Add-non-blocking-version-of-PQcancel.patch) at 2024-01-29 12:28:22 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v28-0002-libpq-Add-pq_release_conn_hosts-function.patch) at 2024-01-28 12:39:42 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v27-0002-libpq-Add-pq_release_conn_hosts-function.patch) at 2024-01-28 09:51:48 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v26-0005-Start-using-new-libpq-cancel-APIs.patch) at 2024-01-26 16:52:45 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v25-0002-Add-non-blocking-version-of-PQcancel.patch) at 2024-01-26 10:44:24 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v24-0003-Start-using-new-libpq-cancel-APIs.patch) at 2023-12-20 13:46:52 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v23-0002-Return-2-from-pqReadData-on-EOF.patch) at 2023-12-14 12:57:47 from Jelte Fennema-Nio <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v22-0003-Add-non-blocking-version-of-PQcancel.patch) at 2023-07-17 13:00:50 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v21-0002-Return-2-from-pqReadData-on-EOF.patch) at 2023-06-19 10:52:48 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v20-0003-Add-non-blocking-version-of-PQcancel.patch) at 2023-04-21 08:20:35 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v19-0002-Return-2-from-pqReadData-on-EOF.patch) at 2023-03-30 10:17:21 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (0001-fixup-Start-using-new-libpq-cancel-APIs.patch) at 2023-03-30 08:07:28 from Denis Laxalde <denis.laxalde at dalibo.com> (Patch: Yes)
    Attachment (v18-0004-Add-non-blocking-version-of-PQcancel.patch) at 2023-03-29 15:58:51 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v17-0002-Copy-and-store-addrinfo-in-libpq-owned-private-m.patch) at 2023-03-28 15:54:06 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (0001-fixup-Add-non-blocking-version-of-PQcancel.patch) at 2023-03-28 14:53:18 from Denis Laxalde <denis.laxalde at dalibo.com> (Patch: Yes)
    Attachment (v16-0003-Return-2-from-pqReadData-on-EOF.patch) at 2023-03-22 12:32:30 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v15-0003-Return-2-from-pqReadData-on-EOF.patch) at 2023-03-15 08:49:23 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v14-0004-Add-non-blocking-version-of-PQcancel.patch) at 2023-03-06 15:42:13 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v13-0002-Refactor-libpq-to-store-addrinfo-in-a-libpq-owne.patch) at 2023-03-01 20:00:49 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v12-0003-Return-2-from-pqReadData-on-EOF.patch) at 2023-03-01 19:47:46 from Jelte Fennema <postgres at jeltef.nl> (Patch: Yes)
    Attachment (v11-0003-Return-2-from-pqReadData-on-EOF.patch) at 2023-01-27 11:50:27 from Jelte Fennema <me at jeltef.nl> (Patch: Yes)
    Attachment (v10-0001-libpq-Run-pgindent-after-a9e9a9f32b3.patch) at 2023-01-26 16:42:37 from Jelte Fennema <me at jeltef.nl> (Patch: Yes)
    Attachment (v9-0001-libpq-Run-pgindent-after-a9e9a9f32b3.patch) at 2022-11-30 09:20:42 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-non-blocking-version-of-PQcancel.patch) at 2022-11-15 11:38:00 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-non-blocking-version-of-PQcancel.patch) at 2022-10-05 13:23:34 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-documentation-for-libpq_pipeline-tests.patch) at 2022-06-27 09:29:39 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0002-Add-non-blocking-version-of-PQcancel.patch) at 2022-04-04 15:21:54 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0002-Add-non-blocking-version-of-PQcancel.patch) at 2022-04-01 16:13:07 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-documentation-for-libpq_pipeline-tests.patch) at 2022-03-30 16:08:16 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-non-blocking-version-of-PQcancel.patch) at 2022-01-13 14:51:40 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)
    Attachment (0001-Add-non-blocking-version-of-PQcancel.patch) at 2022-01-12 15:22:18 from Jelte Fennema <Jelte.Fennema at microsoft.com> (Patch: Yes)